Category Archives: Bulk Fiber Cables

Two Basic Types Of Fiber Optic Cable Construction

Based on 900um tight buffered fiber and 250um coated fiber there are two basic types of fiber optic cable constructions – Tight Buffered Cable and Loose Tube Cable.

Loose Buffer

A loose buffer’s inner diameter is much larger than a fiber’s outer diameter. Two major advantages from this design are perfect fiber isolation from mechanical forces (within given range) and protection from moisture. The first advantage is due to mechanical dead zone. A force imposed on a buffer does not affect the fiber until this force becomes large enough to straighten the fiber inside the buffer. A loose buffer can be easily filled with a water-blocking gel, which provides its second advantage. In addition, a loose buffer can accommodate several fibers, thus reducing the cost of the cable. On the other hand, this type of cable cannot be installed vertiacally and its end preparation for connectorization (splicing and termination) is labour-intensive. Conseuqently, the loose buffer type of cable is used mostly in outdoor installations because it provides stable and reliable transmission over a wide range of temperatures, mechanical stress, and other environment conditions.

Loose tube structure isolates the fibers from the cable structure. This is a big advantage in handling thermal and other stresses encountered outdoors, which is why most loose tube fiber optic cables are built for outdoor applications. In outside application, ADSS Cable is the special loose tube cable.

Loose-tube cables typically are used for outside-plant installation in aerial, duct and direct-buried applications.

Structure of a Loose Tube Cable

Elements in a loose tube fiber optic cable:

1. Multiple 250um coated bare fibers (in loose tube)
2. One or more loose tubes holding 250um bare fibers. Loose tubes strand around the central strength member.
3. Moisture blocking gel in each loose tube for water blocking and protection of 250um fibers
4. Central strength member (in the center of the cable and is stranded around by loose tubes)
5. Aramid Yarn as strength member
6. Ripcord (for easy removal of outer jacket)
7. Outer jacket (Polyethylene is most common for outdoor cables because of its moisture resistant, abrasion resistant and stable over wide temperature range characteristics. )

Tight Buffer

A tight buffer’s inner diameter is equal to the fiber’s coating diameter, as illustrated in Figure 2.33. Its primary advantage is ists ability to keep the cable operational despite a break in the fiber. Since a buffer holds a fiber firmly, a small separation of the fiber ends won’t interrupt the service completely, althought it will definitely degrade signal quality. That is why the military was the first customer and still is the largest for this type of fiber cable. A tight buffer is rugeed, allowing a smaller bend radius. Since each buffer contains only one fiber and there is no gel to be removed, it is easy to prepare this cable for connectorization. Cables having a tight buffer can be installed vertically. In general, tight buffer cables are more sensitive to temperature, mechanical and water impacts than the loose buffer cables; hence, they are recommended mostly for indoor applications. On the other hand, tight buffer cables designed for special applications (such as military and undersea are the strongest cable available.

Tight buffered cables are mostly built for indoor applications, although some tight buffered cables have been built for outdoor applications too. Here we recommend you a good site to buy fiber optic cable, fiberstore is a fantastic selection of fiber optic cable, including simplex,duplex,tight buffered,breakout, breakout, plastic fiber optic cable etc. More information want to know, search fiberstore on Google.

Structure of a Tight Buffered Cable

Elements in a tight buffered fiber optic cable

1. Multiple 900um tight buffered fibers (stranded around the central strength member)
2. Central strength member (in the center of the cable)
3. Aramid Yarn (trade name Kevlar, Kevlar was developed by Dupont) (wrapped around the fibers, for physical protection and cable pulling)
4. Ripcord (for easy removal of outer jacket)
5. Outer jacket (also called sheath, PVC is most common for indoor cables because of its flexible, fire-retardant and easy extrusion characteristics. )

Fiberstore specializes in fiber optic cable assemblies and fiber optic network devices manufacturing, we are known as the fiber optic cable manufacturer for the excellent products quality, competitive prices, fast delivery and good service. We not only offer bulk fiber optic cable assemblies to some world leading companies in this industry, but we also cooperate with many other companies from all over the world and support these partners to win in the market. We are professional China fiber optic company.

Loose-tube vs Tight-buffered Cable

Choosing the right fiber-optic cable has become more challenging than ever. The advent of new cable designs, many suppliers, changes in fiber specifications, and the many claims of cable performance can confuse even the most seasoned designers.The selection of the basic cable design is most dependent on the application and installation environment. The main objective in the cable design is to protect the fiber from stress and other environmental forces during installation and over the life of the product. From a technical standpoint, more than one type of cable may fit the bill for many applications. In that case, other factors such as ease of use, size, and cost will be added to the evaluation and selection process.

Let`s begin outside. The outdoor environment subjects a cable to the most extreme range of environmental condi- tions. These conditions include a wide operation-temperature range, thermal shock, wind loading, ice loading, moisture, and lightning. Therefore, protecting and preserving the optical properties of the fiber is a design priority.

The most proven fiber-optic cable technology for long-term reliability outdoors is the loose-tube, gel-filled design. This type of cable protects the fiber from stresses caused by the environment, namely moisture and temperature. Loose-tube cables, whether flooded under the jacket or water-blocked with dry, swellable materials, protect the fibers from moisture and the long-term degradation moisture can cause. As we all know, Fiberstore is the largest bulk fiber optic cable supplier, we provides a wide range of quality optical fiber cables with detailed specifications displayed for your convenient selecting.

The gel within the loose-tube construction stops the penetration of water and keeps it away from the fiber. In cold temperatures, the protection keeps water from freezing near the fiber–eliminating possible stress fractures. Since the fibers are able to move within the tube, the expansion or contraction that temperature fluctuations can produce in other materials does not transmit stress to the fibers.

Overall, loose-tube cables offer the best protection in an outdoor environment, especially in the less-sheltered applications involving aerial or direct-buried installations. The loose-tube design isolates the fibers from outside environmental and mechanical stresses. The optical performance is virtually unchanged as the cable is exposed to the elements. Telcordia Technologies, BICSI, RUS (Rural Utility Service), and the telco and cable-TV markets support this design.

Loose-tube cores are best-suited for armored applications, double-jacketing for more severe environments, and in figure-eight and all-dielectric self-supporting designs. Tight-buffered designs often do not have anti-buckling elements and do not decouple the fiber from extreme stresses, such as the material contractions that are experienced at extremely cold temperatures. This is why loose-tube cables are so widely accepted for use in outdoor environments. Talk too much about loose-tube cable, now we introduce you one of the loose tube cable for you, it is Loose Tube Type ADSS Cable. As shown following picture:

This Loose Tube Type ADSS Cable from Fiberstore is ideal for installation in distribution as well as transmission environments, even when live-line installations are required . As its name indicates, there is no support or messenger wire required, so installation is achieved in a single pass, making ADSS an economical and simple means of achieving a fiber optic network .

Moving indoors

At the other extreme is cable suitable only for indoor use. The indoor environment is less hostile and not subject to the extremes seen outdoors. Indoor cables traditionally have been a tight-buffered design with either a riser or plenum rating. These cables must conform to National Electric Code requirements for riser or plenum applications.

Tight-buffered cable designs typically offer a smaller package and more flexible cable. The 900-micron buffered fiber is easier to connectorize, and the cable is generally easier to prepare for termination. These cables do not typically provide protection from water migration and do not isolate fibers well from the expansion and contraction of other materials due to temperature extremes. Tight-buffered cables, often called premise or distribution cables, are ideally suited for indoor-cable runs. OM4 fiber optic cable is tight-buffered cable we often see in many applications such as Local Area Networks (LAN) backbones, Storage Area Networks (SAN), Data Centers and Central Offices.

Now you`re wondering, “What do I do if I need to go in and out? Do I need to buy two types of cables and splice them at building entry?” Actually, until a few years ago, that is exactly what you had to do. Fortunately, design and materials have evolved to meet the needs of indoor/outdoor applications with a variety of cable choices. The most prevalent choice today is a loose-tube, gel-filled, riser-rated cable. This design offers all the proper outdoor protection, and the riser rating allows it to be run within the building (except in the horizontal). There are also loose-tube plenum-rated cables available.

The types of Fiber Optic Cable

Fiber optic cables are the medium of choice in tele communications infrastructure, enabling the transmission of high-speed voice, video, and data traffic in enterprise and service provider networks. Depending on the type of application and the reach to be achieved, various types of fiber may be considered and deployed.

Multimode vs. Single-Mode Cable

Multimode cable has a large-diameter core and multiple pathways of light. The two most commnon are 50 micron and 62.5 micron.

Multimode fiber optic cable can be used for most general data and voice fiber applications, such as bringing fiber to the desktop, adding segments to an existing network, and in smaller applications such as alarm systems. Both 50- and 62.5-micron cable feature the same cladding diameter of 125 microns, but 50-micron fiber cable features a smaller core (the light-carrying portion of the fiber). Also, both also use either LED or laser light sources.

Although both can be used in the same way, 50-micron cable is recommended for premise applications (backbone, horizontal,and intrabuilding connections) and should be considered for any new construction and installations. The big difference between the two is that 50-micron cable provides longer link lengths and/or higher speeds, particularly in the 850-nm wavelength. 50 micron OM4 fiber optic cable now save up to 30% off sale in our store, if have interest, search Fiberstore on google.

Single-mode cable has a small 8–10-micron glass core and only one pathway of light. With only a single wavelength of light passing through its core, single-mode cable realigns the light toward the center of the core instead of simply bouncing it off the edge of the core as multimode does.

Single-mode cable provides 50 times more distance than multimode cable does. Consequently, single-mode cable is typically used in high-bandwidth applications and in long-haul network connections spread out over extended areas, including cable television and campus backbone applications. Telcos use it for connections between switching offices. Single-mode cable also provides higher bandwidth, so you can use a pair of single-mode fiber strands full-duplex for up to twice the throughput of multimode fiber.

Simplex vs. duplex Patch cables

Multimode and single-mode patch cables can be simplex or duplex.

Simplex has one fiber, while duplex zipcord has two fibers joined with a thin web. Simplex (also known as single strand) and duplex zipcord cables are tight-buffered and jacketed, with Kevlar strength members. Because simplex fiber optic cable consists of only one fiber link, you should use it for applications that only require one-way data transfer. For instance, an interstate trucking scale that sends the wieght of the truck to a monitoring station or an oil line monitor that sends data about oil flow to a central location.

Use duplex multimode or single-mode fiber optic cable for applications that require simultaneous, bidirectional data transfer. Workstations, fiber switches and servers, Ethernet switches, backbone ports, and similar hardware require duplex cable.

Indoor/Outdoor Cable

Indoor/outdoor cable uses dry-block technology to seal ruptures against moisture seepage and gel-filled buffer tubes to halt moisture migration. Comprised of a ripcord, core binder, a flame-retardant layer, overcoat, aramid yarn, and an outer jacket, it is designed for aerial, duct, tray, and riser applications.

PVC (Riser) vs. Plenum-Rated

PVC cable (also called riser-rated cable even though not all PVC cable is riser-rated) features an outer polyvinyl chloride jacket that gives off toxic fumes when it burns. It can be used for horizontal and vertical runs, but only if the building features a contained ventilation system. Plenum can replace riser, but riser cannot be used in plenum spaces.

“Riser-rated” means that the jacket contains PVC. The cable carries a CMR (communications riser) rating and is not for use in plenums.

Distribution-Style vs. Breakout-Style

Distribution-style cables have several tight-buffered fibers bundled under the same jacket with Kevlar or fiberglass rod reinforcement.These cables are small in size and are used for short, dry conduit runs, in either riser or plenum applications. The fibers can be directly terminated, but because the fibers are not individually reinforced, these cables need to be broken out with a “breakout box” or terminated inside a patch panel or junction box.

Breakout-style cables are made of several simplex cables bundled together, making a strong design that is larger than distribution cables. Breakout cables are suitable for conduit runs and riser and plenum applications. Fiberstore supply high quality Multi-purpose Breakout Cables which facilitates easy installation of fiber-optic connectors. Buy Bulk Fiber Optic Cable on our worldwide online store with your confidence.

Loose-Tube vs. Tight-Buffered Fiber Optic Cable

There are two styles of fiber optic cable construction: loose tube and tight buffered. Both contain some type of strengthening member, such as aramid yarn, stainless steel wire strands, or even gel-filled sleeves. But each is designed for very different environments.

Loose-tube cable is specifically designed for harsh outdoor environments. It protects the fiber core, cladding, and coating by enclosing everything within semi-rigid protective sleeves or tubes. Many loose-tube cables also have a water-resistant gel that surrounds the fibers. This gel helps protect them from moisture, which makes loose-tube cable great for harsh, high-humidity environments where water or condensation can be a problem. The gel-filled tubes can also expand and contract with temperature changes. There are many fiber cable types of loose tube, for example, ADSS Cable is used by electrical utility companies as a communications medium.

But gel-filled loose-tube cable is not the best choice when cable needs to be routed around multiple bends, which is often true in indoor applications. Excess cable strain can force fibers to emerge from the gel.

Tight-buffered cable, in contrast, is optimized for indoor applications. Because it’s sturdier than loose-tube cable, it’s best suited for moderate-length LAN/WAN connections or long indoor runs. It’s easier to install, as well, because there’s no messy gel to clean up and it doesn’t require a fan-out kit for splicing or termination. You can install connectors directly to each fiber.

The Specific Instructions of Optical Fiber Patch Cord

Optical fiber communication refers to modulate voice, video and data signals to the fiber patch cord as a communication transmission medium. The optical fiber can be divided into multimode fiber and single mode fiber.

Single Mode Fiber Patch Cord

The central glass core of single mode fiber is fine (core diameter is usually 9 or 10μm), it only can transfer one mode light. The mode dispersion is small, and it is for remote communication, but it plays a major role in the chromatic dispersion so that the spectral width of the single mode fiber has a higher light stability and the requirement that the spectral width is narrower and better stability. 1000 Mb/s fiber optic transmission distance is 550m-100km. As we all know, we commonly see 9/125μm single mode optical fiber in the market. And single mode 9/125um fiber optic patch cables are recommended for Fast, Gigabit, 10G Ethernet or SONET OC3-OC192 rate optical connections. Low prices make the 9/125um fiber attractive for in-building projects too, because of the reliability and choice of using a single-strand of fiber for same communications (simplex cords are used on Bi-Directional data links).

Multimode Fiber Patch Cord

The central glass core of Multimode fiber is coarse (50 or 62.5μm), multiple modes of light can pass. However, its mode dispersion is among large, which limits the frequency of the transmitted digital signal, and with the increase in distance will be more severe. Multi-mode fiber transmission distance is relatively recent, generally only a few kilometers. 1000 Mb/s fiber optic transmission distance is 220m-550m. In general, we can find 62.5/125um Multi-mode fiber optic cable in the market. 62.5/125um multimode fiber cables are recommended for Fast Ethernet and up to OC3/STM1 rate optical connections. They can also be used for Gigabit Ethernet multi-mode connections on distances less than 275 meters. 62.5/125um fiber is most used inside buildings.

Types of Fiber Patch Cord

In the network wiring, the more applications optic fiber has three types, there are 62.5μm/125μm multimode fiber, 50μm/125μm multimode fiber, and 9μm/125μm single mode fiber. According to the rate and transmission distance, we can distinguish and choose single/multimode optic fiber. Tied the fiber bundle, outside has the protective housing, which is called fiber cable. According to different application environments, the cable can be divided into indoor and outdoor fiber optic cable.

Fiber refers that the fiber jumper with a desktop computer or device connected directly to facilitate the connection and manage the device. Fiber jumpers are also divided into two multimode and single-mode, which are connected with single mode and multimode fiber. Jumper for an active connection cable between the two devices without connectors (as distinguished: patch (patch cord) is one or both ends with connectors; jumper is at both ends of the cable has a fiber optic connectors, the device can be directly connected, but only one end of the fiber pigtail connector and the other end to the fiber splicing).

Fiber Patch Cord Connector Types

Fiber patch cord connector shape can be divided into FC, SC, ST, LC, etc. According TO ferrule grinding mode, it can be divided into PC (plane), UPC (spherical surface), APC (8 degrees inclined plane ) and other (cable optical transceiver general requirements FC / APC connector). According to the type of optical fiber, it can be divided into the single mode optical fiber, 50/125 multimode, 62.5/125 multimode and Gigabit, etc. According to the optical fiber connetor, we commonly see LC, SC fiber patch cord in the market, the following products are LC-SC fiber in our online store, if you have interest, you can go to our store to have a see.

Fiber patch cord products are widely applied, it applies in the communications room, fiber to the home, local area networks, fiber optic sensors, fiber optic communication systems, fiber optic transmission equipment connected, defense readiness and so on. Apply to cable television, telecommunications networks, computer networks and optical fiber test equipment. Broken down mainly used in several ways.

The Basic Knowledge of Optical Fiber and Pigtail

How do fiber optic work?

Optical fiber communications composed of thin glass by the plastic protective overcoat layer. Glass essentially consists of two parts: the core diameter of 9 to 62.5μm, a low refractive index outer cladding diameter of 125μm glass material. Although according to the different materials
used, there are some other types of fiber, but is mentioned here that the most common types. Light in the core portion of the fiber to the “total internal reflection” mode transmission, but also refers to the light entering end of the fiber, the interface between the core and the cladding reflected back and forth, and then transmitted to the other end of the fiber. Core diameter of 62.5μm, outer cladding diameter of 125μm fiber called 62.5/125μm fiber.

What is the difference between multimode and single-mode fiber?

Multimode Fiber Optic Patch Cables

Almost all of the Multimode Fiber Optic Patch Cables dimensions are 50/125μm or 62.5/125μm, and the bandwidth (the amount of information transmission fiber) is usually 200MHz to 2GHz. Multimode optical transceiver via multimode fiber can be up to 5 km of transmission. In the light emitting diode or a laser light source.

Single Mode Fiber Cable

The size of Single Mode Fiber Cable 9-10/125μm, and compared with a multimode optical fiber, it has unlimited bandwidth and low loss characteristics. The single mode optical transceiver used for long-distance transmission, and sometimes up to 150-200 km. Using a narrow spectral line LD or LED as a light source.

Single mode fiber is cheap, but compared to multi mode fiber device, it is more expensive. Single-mode devices typically can run on single mode fiber, but also be run on a multi mode fiber, and multimode device only runs on multimode fiber.

How is the loss with using of the Fiber Optic Patch Cables?

It depends on the the wavelength of the transmitted light and the kind of optical fiber

When 850nm wavelengths for multimode fiber: 3.0 dB / km
When 1310nm wavelength for multimode fiber: 1.0 dB / km
When 1310nm wavelength for single mode fiber: 0.4 dB / km
When 1550nm wavelength for single mode fiber: 0.1 dB / km

Fiber Optic Pigtails

Fiber Optic Pigtails ony has one end connector, and the other end is an optical fiber core breakage, by fusion connected with other core cable, often appear in the fiber optic terminal box for connecting cable and fiber optic transceivers.

Fiber optic pigtails devide into multimode and singlemode fiber pigtails. Multimode fiber pigtail is orange and wavelength of 850nm, the transmission distance of 500m, for short-range connectivity. Single mode fiber pigtail is yellow, there are two wavelengths, 1310nm and 1550nm, transmission distance of 10km and 40km.

Fiber optic pigtail connector was devided into single mode and multimode by the mode of fiber optic cable; By overall structure can be divided into FC, SC, ST, MU, LC, F25, etc. By the end structures can be devided into PC、UPC、APC.

Here are some fiber optic pigtails products in fs.com, as shown in figure:

Multimode LC/SC/ST/FC Pigtail

Our fs.com provide wide degree flexibility on fiber pigtails, including 9/125 single-mode, 62.5/125 multimode 50/125 multimode and 10G 50/125um OM3 types, simplex fiber, 4 fibers, 6 fibers, 8 fibers, 12 fibers, 24 fibers, 48 fibers and so on.These fiber pigtails can be with fan-out kits and full compliant to Telcordia, EIA/TIA and IEC standards. Welcome to our store to know more information.

Development and Benefits of Multi Core Single Mode Fiber

1. The development of multi core single mode fiber

A typical optical fiber is single mode fiber structure, the outer cladding / inner cladding surrounding the core constitutes a waveguide. A common multi core single mode fiber includes a number of cores, and each core has their own single mode optical fiber inner cladding. Thus, each core is a fiber optic of the waveguide, i.e., one single mode fiber optic cable’s function is equal to a plurality of single core fiber. The obvious advantage of this fiber is low cost, low production costs of about 50% compared with ordinary fiber. In addition, Fiber optic cables can increase integration density, but also can reduce construction costs. Back in the late 1970s, foreigner proposed the idea which uses multi-core optical fiber manufacturing high density fiber. However, because of the imperfect manufacturing technology, fiber affected by the residual stress, low mechanical strength, poor reliability, has not developed into practical and commercialization. Into the 1990s, fiber optic communication in the FTTH ( fiber to the home ) development has encountered higher cost of obstacles, and the intense competition in the copper. To overcome this obstacle, we must significantly reduce the cost of fiber optic cable manufacturing, and requires the development of high-density large armored fiber optic cable, in order to facilitate the laying of fiber optic cable and reducing installation costs. Thus, in 1994, France Telecom proposed a new concept of multi core single mode fiber and design a 4 core fiber optic cable. In July 1994 made more than 100 kilometers Single Mode Fiber Cable, and use different core and structures fiber optic cables and non-fiber ribbon cable into the cable experiment. Compared with the common Single Mode Fiber, the cable density increase many times. Initially confirmed that the proposed multi core single mode fiber can reduce manufacturing costs while addressing the fiber optic cable and the development of high- density optical fiber optic cable. Since then, France Telecom and Alcatel have carried out a 4 core single mode optical fiber research and development , studied from optical design, perform manufacture, drawing techniques, optical properties, a 4-pin cable, and mechanical connections from each a core of separation and termination of ordinary single mode fiber and other aspects of a comprehensive. Currently, the cost per meter per core for $ 0.03, while the cost per meter of ordinary single mode fiber is $ 0.055. We can say that multi-core single mode fiber forward practical development. This article focuses on the structure of multi-core single mode optical fiber design, manufacturing processes, and fiber properties, but also a brief introduction to the new fiber optic FTTH applications in the technical and economic advantages.

2. Design of multi core single mode fiber

To meet the needs of FTTH systems. The design of multi-core fiber should meet the following key requirements: 1.31 um and 1.55um wavelength dual-window work; Crosstalk between each core is greater than -35 dB: precise geometry; Easy identification of each core and ordinary Single mode Fiber Optic Cable. Further, since the optical fiber length shorter in FTTH network (≤ l0 km), so the requirements for dispersion and attenuation of the fiber is relatively relaxed, there are strict requirements on bending and micro bending losses. Each of the core is respectively located on the vertices of a square, the center of the square is the central axis of the multi core single mode fiber. Each core is a single mode optical fiber waveguide, cutoff wavelength 1.3 um. In order to reduce the bending loss and crosstalk, reinforce fiber molded capacity constraints, therefore compared with the conventional G652 optical fiber, the refractive index difference has increased. 3 core is a simple step structure, a refractive index difference 0.0062; another annular core refractive index profile, the refractive index difference 0.0l, this core is provided in order to facilitate identification of each of the cores.

The main advantage of multi core Single Mode Fiber Cable

1. Attenuation coefficient

By the testing and research of nearly 200km long fiber, the attenuation coefficient of the multi core single mode optical fiber reached levels close to the corresponding single core fiber.

2. Bending and micro-bending loss characteristics

Bending and micro bending loss characteristics of the multi-core single mode fiber optic are good, negligible additional loss introduced. This is due to the higher refractive index and limits the ability of a strong mold. Multi core single mode fiber optic in the l310nm and 1550nm wavelength mode field diameter was 8.4 ± 0.21un and 9.75 ± 0.25um, slightly smaller than the ordinary single mode optical fiber.

3. Crosstalk characteristics

To 30 g of tension around 15 cm in diameter optical fiber on ferrule l0 km optical fiber with characteristic measurement, crosstalk between each core at l 310 nm wavelength, less than-70dB; at 1 550 nm wavelength, less than a 50 dB, are excellent -35 dB in the required index. Even slim to the 30 km, between 0-30g tension variations, changes, crosstalk is also only a few dB.

4. Mechanical strength

With 10m length test, the average intensity of 70N. The conventional 125um fiber diameter of 60 N, it is because of a large cross-sectional area of multi-core single mode fiber. Fracture stress 4.6 GPa, 94% for the conventional 125 um diameter fiber.

Corning Fiber Optic Cable: World Leader in Fiber Optics Technology

From the time they introduced fiber optic technology in the 1970, corning has been at the forefront of fiber optic technology, forming the designs, products and guidelines that have become standard in the industry today. Corning’s broadened product range means they are now an industry leading fiber optic cable manufacturers in a number of customer focused solutions including:

Corning fiber optic cable
Corning connectors and related hardware
Corning distributed antenna systems (DAS)
Harsh environments products of Corning

As the inventors of optical fiber in 1970, innovation is at the core of Corning’s successful history of technology and the foundation of providing compatible solutions that meet our customer’s ever-changing needs. Such solutions include FiberStore solutions that provide the successful and efficient foundation of your data center, local area, intelligent traffic system and industrial networks.

After half a year after Corning fist debuted the “Thunderfolt Optical Cable” at CES 2013 in January alongside a USB standard solution dubbed “USB 3. Optical Cables”, Corning announced that its Thunderbolt Optical Cables are the first completely optical fiber products to receive Intel’s certification.

Corning’s all-optical Thunderbolt cable use the company’s ClearCuve VSDN optical fiber technology to deliver high data speeds over longer distances than traditional copper cables. The optical fiber version are also 50 percent smaller and 80 percent lighter than their copper counterparts.

Corning plans to make the cable available at various lengths starting at 10 meters, through final products specifications have yet to be revealed.

Corning has put over 3,000,000,000 US Dollars investment in China; it has 8 manufacturing factories in China with around 3000 workers. Corning Inc China headquarter is located in Shanghai. For fiber optic cable business, it has one optical fiber company and one fiber optic cable company in Shanghai, which is fully run and invested by Corning. Meanwhile it has two holding companies for fiber optic cable business in China, one is in Chengdu and other is in Beijing. Not only on fiber optic cable business, Corning also provides LCD products and ceramic products used on cars in China. FiberStore is proud to offer an extensive line of Corning products! Whether your application is indoors, outdoors, aerial, riser or plenum, you’re sure to find the perfect fiber optic cable for your installation among Coring’s Optical Fiber Communication product lines.

Are Your Sure that You Have Chosen the Truly Low Smoke Non Halogen Cables

This article will guide to buy the truly low smoke halogen free cable, which is fully compliant with IEC standards and ultimately offers maximum safety and assurance in application. Awareness of the impact of smoke and harmful gases emitted during a fire has led to a growing demand for an alternative to more traditional plastic halogenated cable constructions.

Although low smoke and flume cables are commonplace, however, in the event of a fiber, these cables can still release toxic and corrosive gases. In the next text, we will tell you the difference between low smoke non halogen or low smoke and halogen:

It is true to state that a cable can have low smoke characteristics so that in the event of a fire, it will not release the dense smoke plumes seen with a traditional PVC cable. However, cable can be low smoke and fume and yet still release toxic and corrosive gases when ignited. Despite its low smoke generation, this classification of cable, commonly known as LSF (Low Smoke and Fume) still typically contains PVC based compounds, making it exempt from halogen free compliance.

The fact is cables which have PVC in their insulation or cable jacket are not compliant and cannot be deemed to low smoke non halogen. If they contain PVC, they are not halogen-free.

Stringent fire requirements, environmental concerns and new legislation have resulted in an increased demand for both low smoke and low smoke non halogen cables. This increase in demand has also led to a growth in the number of cable manufacturers and suppliers in the market.

A low smoke cable and a low smoke non halogen cable are often confused people as a multitude of cables available and the industrial abbreviations used to describe them. Whilst a low smoke cable is acceptable in some industries and applications, for maximum safety, fully compliant low smoke non halogen cable from a reputable cable manufacturer is recommended. A high performance low smoke non halogen cable can bring benefits in addition to compliance, particularity in the case of flame retardants which is vital to help prevent the spread of fire.

Conformity to the IEC standard 60332-1-2 is a fundamental requirement for flame retardants for communications cables whether halogenated or not; however, superior quality Low Smoke Non Halogen cables can achieve a higher rating to the IEC standard 60332-3-24. Superior flame retardancy to reduce the spread of fire, wider operating temperatures for confident use in varying temperature applications and improved tensile strength for durability can all be achieved from a premium quality cable designed for total reliability and safety.

Reputable fiber optic cable supplier will build these additional benefits into their cable design and manufacturing processes. Process capability does not necessarily bring process stability, consistent manufacturing quality is vital for assured performance and Flame Retardant Low Smoke Non Halogen compliance.

Plastic Optical Fiber System

There are numbers of services providing large-volume information content, such as high-definition movies, continues to increase rapidly. Single-mode glass optical fiber has been widely deployed in data trunk lines and pipelines to connect large cities and nations. It has already become indispensable as an information transmission medium. However, SM GOF is mechanically weak and lacks sufficient bending ability. Moreover, as the core diameter is very small, just 10 um, extremely precise techniques and expensive devices are required to connect fibers to signals receiving devices.

Because of this, SM GOF is rearly used for very short reach networks, such as local area networks in buildings. Facing this “last hundred meters” problem in optical fiber infrastructure, plastic optical fiber has obvious advantage over it:

POF fiber is made out of a plastic such as acrylic (PMMA) as the core material and fluorinated or perfluorinated polymers as the cladding materials. It carries optical signals along a core made from plastic, instead of the more traditional silica, the price of which is much cheaper. It can cost approximately one fifth as much as comparable glass fiber. Which puts it within reach of more consumers. Customers who want to connect to the silica fiber optical network maintained by a telecommunications company usually cannot afford traditional optical fiber for internal wiring, but the plastic optical fiber can help to make the connection.

Plastic optical fiber (POF) systems offer the promise for low cost applications in communications, data transmission, illumination, lighting, imaging, sensing and light transmission. Plastic fiber optic systems provide the same advantages of glass optical fiber (GOF) but at lower cost and easier use. Glass optical fiber systems have received more attention than POF, mainly due to their rapid acceptance in telecommunications as data rates up to 100 Mbps and distance up to 100 meters.

Plastic fiber optic cable systems are also finding increased applications for sensors and lighting. The technology is also moving rapidly as evidenced by recent papers on multimode and single mode POF, high temperature fiber, integrated POF circuits, laminated lightguides, discrete components both active and passive, optical switching, and other developments too numerous to mention.

However, POF has two important weaknesses: it has significantly lower bandwidth than GOF, and its attenuation is far higher. Recent developments conquering both of these issues now mean that POF is regarded as the strongest candidate at present for optical data transmission over the last hundred meters.

Knowledge about Fiber Optic Pigtails

Much about the tech jargon, some people don’t know its meaning. Such as fiber optic pigtails, fiber pigtail is a piece of fiber optic cable with only one fiber optic connector on one side of the cable, there are single mode and multimode fiber optic pigtails, which can be with various types of fiber optic terminations such as SC, FC, ST, LC, MU, MT-RJ, MTP, MPO, etc. the fiber optic pigtail with connector side is used to link the equipment, while the other side of the pigtail is melted together with the fiber cable, by melting together the fiber glasses, it can reach a minimum insertion loss. Fiber optic pigtails are usually used with fiber optic management equipment like ODF, splice closures and cross cabinets. Common types of fiber optic pigtails are usually with 0.9mm fiber cable diameter, and usually installed inside ODF unit. Most commonly used types are SC fiber optic pigtail, ST fiber optic pigtail,FC fiber optic pigail, LC fiber optic pigtail ,MT-RJ fiber optic pigtail,SC/APC fiber optic pigtail, FC/APC fiber optic pigtail and E2000 fiber optic pigtail. They are single mode types and multimode types.

A fiber pigtail is really a single, short, usually unbuffered, optical fiber which has an optical connector pre-installed on one end along with a period of exposed fiber in the other end. The end of the pigtail is stripped and fusion spliced to a single fiber of a multi-fiber trunk. Splicing of pigtails to each fiber within the trunk “breaks out” the multi-fiber cable into its component fibers for connection to the end equipment.Fiber pigtails can have female or male connectors. Female connectors might be mounted in a patch panel, often in pairs although single-fiber solutions exist, to allow them to be connected to endpoints or other fiber runs with patch fibers. Alternatively they can have male connectors and plug directly into an optical transceiver.As the fibers must have connectors fitted before they can affix to other equipment. Fiber pigtails may be one of the common solutions for fiber cable termination, the inclusion of connectors to every optical fiber in a cable.

According to the ITU-T (International Telecommunication Union Telecommunication) standardization organization, fiber optic pigtails are categorized into Fiber pigtail that conforms to G.652 and G.653 fiber splicing technology standard. Fiber optic splicing technology is primarily to use a fiber splicing machine to fuse splice the fiber with fiber or the fiber with fiber pigtails. In this process, the bare fibers of the fiber optic cables are fuse spliced with the fiber pigtails to become a whole. With the fiber optic connector at one end of the fiber pigtails, they are connected to fiber optic transceivers, the optical fibers connected with the twisted pairs, and then connect with the information outlets. Main tools used in the fiber splicing technology include fiber termination box, fiber optic converter, fiber optic transceiver, fiber pigtail, optical fiber coupler, fiber stripper, and fiber optic cleaver, etc. Currently fiber optic pigtail with SC, ST, FC, LC MT-RJ, SC/APC, FC/APC, E2000 fiber optic connectors are available in the market.

FIBERSTORE INC. provide a full range of fiber optic pigtail, it is offered in various sizes and shapes as per the requirement of various industrial applications. These are extensively used in telecom industry and acknowledged for high performance and quality. Furthermore, we make sure that our range is free from any defects and ideal for uses. And we also offer the waterproof fiber optic pigtail, they are produced strictly according to IEC standards, the products feature low insertion loss, high return loss, good interchangeability and repeat push-pull performance, which make them easy to use. The waterproof fiber optic pigtails are with strong jacket and waterproof sealed head connectors; they can be used in harsh environment. If you need some other types of patch cables, such as SC fiber cable, LC fiber patch cable, ST fiber patch cable and so on. Welcome to our company to choose the fiber optic patch cable.

Fiber Optic Cabling Solutions

The largest solutions of pre-terminated fiber optics, including multimode and single-mode patch cords, MTP/MPO fiber trunks and harnesses, plug-n-play modules/cassettes and fiber enclosures.