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Erbium-Doped Fiber Amplifier for DWDM Systems

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DWDM EDFA (Erbium-Doped Fiber Amplifier) is a key component in DWDM network systems. It uses an optical supervisory channel power adjustment and extends the power link budget for long distance DWDM communication systems. As the operating bandwidth of the EDFA has 30nm, it can zoom back of a plurality of different wavelength optical signals, and so it can be very conveniently used in DWDM systems to compensate for various optical attenuation.
With gain flattening filter, DWDM EDFA offers constant flat gain for multi-channel DWDM systems. It works at C-band or L-band, integrates electric driver, remote control, temperature control, and alarm circuits all together in a small package. It has assembled up to three pump lasers to meet the different output power levels required by DWDM systems and protect the pump failure.

FiberStore provides 40 channel BA Module DWDM EDFA. This product is spectrum flat EDFA for DWDM system. It offers high optical gain, low noise figure and high saturation optical power which are fully integrated with various kinds of DWDM systems. This DWDM EDFA has perfect network interfaces including one Ethernet RJ45 port, one RS232 port and two RS485 ports. And the open mib ensure the connectivity with all other network management system. Click here for the DWDM EDFA price.


FiberStore DWDM EDFA Features

1. Low noise figure with typical 4.5dB and high flatness with typical 1dB

2. Covers whole C-band and carries 40 or 80 channels

3. Redundancy hot swap power module with 110/220V AC and 48V DC can plug mix

5. Supports telnet and SNMP network management

6. Gain can be adjustable by network and manual

7. High precise AGC (automatic gain control) and ATC (automatic temperature control) circuits
8. High saturation output power

9. Flexible mechanics and circuit structures (Module, 1U Rack and Gain Block)

10. OEM is available and fully compatible with Telecordia GR-1312-CORE

FiberStore DWDM EDFA Functions

1. A 5V OLT 25W ATT power supply with input protection and output filtering. It is necessary to monitor the current supplied to the EDFA (this gives a measure of the aging of the device) and desirable to monitor the voltage.

2. Drive two digital input lines which control the gain of the DWDM EDFA.

3. Monitor two analog outputs which measure the input and output optical amplifier power levels.

4. Communicate with the EDFA serial port which is RS232 protocol but at TTL levels. (This allows more detailed health monitoring and setting of operating conditions that is possible using only the digital signals.)

5. Communicate with a LMA monitor and control bus. The controller is a circuit card 40mm wide by 220mm high.

The New 40G QSFP+ Transceivers Launched by FiberStore

FiberStore is proud to present the new 40G QSFP+ transceiver which delivers network speeds of up to 40Gbps that will satisfy the appetite of any application that requires increased bandwidth. The new QSFP+ transceivers is available in the format of SR QSFP+, breakout cable and DAC cable. All of these products are fully tested to 100% compatible with Cisco equipment to the highest standard.

QSFP+40G-SR4-FS:
SR QSFP+ modules supports link length of 100m and 150m respectively on laser-optimized OM3 and OM4 multimode fiber cable. It originally enables high-bandwidth 40G optical links over 12-fiber ribbon cables terminated with MPO/MTP multi-fiber connectors. It integrates four data lanes in each direction with each lane to give an aggregated 40 Gbps bandwidth. Each lane supports link length of 100m on OM3 multimode fiber to 150m on OM4 multi-mode fiber. The optical transmitter incorporates a 4-channel 850nm VCSEL laser, a 4-channel input buffer and laser driver, control and bias blocks. The optical receiver incorporates a 4-channel PIN photodiode, a 4-channel TIA array, a 4 channel output buffer, control blocks. Maximum channel insertion loss allowed is respectively 1.9dB over 100m of OM3 cables or 1.5dB over 150m of OM4 cable.
QSFP+ 40G- LR4-FS:
LR QSFP+ modules supports link lengths of up to 10km over a standard pair of G.652 single-module fibres with duplex LC connectors. The 40 Gigabit Ethernet signal is carried over four wavelengths. The 40G QSFP+ LR4 transceiver converts 4 inputs channel of 10Gb/s electrical data to 4 CWDM optical signals, and multiplexes them into a single channel for 40Gb/s optical transmission.On the receiver side, the transceiver optically de-multiplexes a 40Gb/s input into 4 CWDM channels signals, and converts them to 4 channel output electrical data. The center wavelengths of 4 CWDM channels are 1271, 1291 and 1331nm. It contains a duplex LC connector for the optical interface and a 38-pin connector for the electrical interface.
QSFP+ to QSFP+ Copper Direct-Attach Cables:
QSFP+ to QSFP+ copper direct-attach 40GBase-CR4 cables is suitable for a very short distance and offers a highly cost-effective way to establish a 40-Gigabit link between QSFP+ ports of Cisco switches within racks and across adjacent racks. FiberStore currently offers cisco passive cables in length of 1, 3, 5 meters, and active cables in length of 5, 7 and 10 meters.
FiberStore QSFP+ Transceiver modules order information:
QSFP+40G-SR4-FS: 40GBase-SR4 QSFP+ transceiver modules for MMF, 4-lanes, 850-nm wavelength, 12-fiber MPO/MTP connector
QSFP+ 40G- LR4-FS: 40GBase-LR4 QSFP+ transceiver module for SMF, 4 CWDM lanes in 1310 nm window Muxed inside module, duplex LC connector, 10 km reach
QSFP-H40G-CU5M- FS: 40Gbase-CR4 QSFP+ direct-attach copper cable, 5 meter passive
QSFP-H40G-CU3M- FS: 40Gbase-CR4 QSFP+ direct-attach copper cable, 3 meter passive
QSFP-H40G-CU1M- FS: 40Gbase-CR4 QSFP+ direct-attach copper cable, 1 meter passive
FiberStore is reliable and trustable supplier of cost-effective 40G QSFP+ transceivers. Our 40G QSFP+ transceivers and QSFP+ Cables are manufactured with high quality components and rigorously tested to ensure the compatibility, reliability and quality. All of our QSFP+ transceiver and cables come with lifetime warranty. If you have any questions about our products, please don’t hesitate to contact us at sales@fs.com

Micrel Launches New Limiting Post Amplifier for 10Gbps FTTH PON Network

Micrel Semiconductor has introduced SY88053CL and SY88063CL limiting post amplifier. Both devices support the expansion of the next generation passive optical network (PON) FTTH XGPON and 10GEPON optical line terminal (OLT) ideal for applications. The product line also applies to support multi-rate applications. Fiber optic transceiver module, the maximum rate is up to 12.5Gbps. Support for Ethernet, Fibre Channel, OTN and OBSAI data rate.
“These new devices offer an impressive number of features including a new level of high bandwidth, high input sensitivity with programmable, wide range SD Assert and LOS De-Assert threshold levels, 4dB of electrical hysteresis, and stable SD Assert and LOS De-Assert timing to meet the stringent requirements of next generation PON network,” stated Tom Kapucija,director of marketing for the high speed communications business, Micrel. “Thesse features enable link efficiency optimization with increased system reach, higher link up-time and higher payload bandwidth.”Vice president for the timing and communications business group, Rami Kanama, said, “As the demand for more data at higher speeds increases, carries need to meet this demand by upgrading their line-side equipment and revamping their networks. Micrel continues its effort in addressing this demand at the device level. Our new optical limiting amplifier delivers speed, performance, and features that is critical to solving technical difficulties facing next generation FTTH, Enterprise, and transport networks. With increased link efficiency, system operators can achieve higher data transmission performance and potentially reduce carries’ CapEx and OpEx.”
Both devices incorporate fast SD Assert and LOS De-Assert times across the entire differential input voltage range of 5mVPP to 1800mVPP which enables improved link efficiency and optimization. In 3mVPP to 30mVPP wide LOS / SD threshold range provides a 4dB electrical hysteresis.  Integrated 50 Ohm input and output impedances optimize high speed signal integrity while reducing external component counts and in turn, cost. TTL compatible JAM input enables a SQUELCH function by routing back the LOS or SD signal.
The SY88053CL enable user adjustable decision threshold adjustment for optimized Bit Erro Rate operation in noisy applications with asymmetrical noise distribution while the SY880563CL provides a user selectable Digital Offset Correction function that automatically compensates for internal device offsets in the high speed data path. Other features include multi-rate 1Gbps to 12.5Gpbs operations, optional LOS or SD output, selectable RXOUT +/ RXOUT- signal polarity (SY88053CL) and 25ps typical rise / fall time. Beyond the current customer demand through increased performance margins, improved manufacturability of the module, while reducing costs. By increasing each node and the downstream branch exceeds 512ns link budget margin established, to improve the efficiency and data throughput of the link. By optimizing in a noisy environment and the error rate or RAMAN EDFA Optical Amplifier noise characteristics of asymmetric compensation, expanding the system extends the scope to improve the data throughput.
Both devices offer a wide power supply range of 3.3V+/-10 percent and come in an industrial temperature range of -40 degC to +85-degC and a tiny 3mm x 3mm QFN package.
Source: www.fs.com/news/

NeoPhotonics Opens Factory in Dongguan of China

FiberStore News

Summary: NewPhotonics last week announced the first shipments of optical transceiver modules out of its new, high capacity factory in Dongguan, Guangdong Province, China

NewPhotonics Corporation, a leading designer and manufacturer of photonic integrated circuit, or PIC, based optoelectronic modules and subsystems for bandwidth intensive high speed communications networks, last week announced the first shipments of optical transceiver modules out of its new, high capacity factory in Dongguan, Guangdong Province, China.

The new factory consists of approximately 80, 000 square feet of production spare, which includes approximately 50, 000 square feet of clean room area. The new production lines use state of the art manufacturing equipment for optical sub-assembly (OSA) fabrication and final module assembly and test. Module work cells are designed to support rapid reconfiguration of production lines, which allows quick reaction to the changing needs in the dynamic market of optical modules for high speed communications worldwide.

Dongguan factory is the latest addition to the company’s manufacturing capabilities. Another basement of manufacturing, assembly and test operations facilities is located in Shenzhen, China. Together with FiberStore, another fiber transceiver provider, forming the most competitive transceiver modules providers in China Silicon Valley, Shenzhen.

About NeoPhotonics
NeoPhotonics is a leading designer and manufacturer of photonic integrated circuit, or PIC, based optoelectronic modules and subsystems for bandwidth-intensive, high-speed communications networks.

About FiberStore
FiberStore is one of the main fiber optic network solutions providers, which offers complete range of electrical, optical and mechanical parts, such as fiber transceiver, direct attach passive &
active copper cables. The company’s products enable cost-effective, high-speed data transmission and efficient allocation of bandwidth over communications networks.

FiberStore Announces Availability of a New Product -Return Loss Tester JW3307B

Summary: FiberStore announced the launch of a new return loss tester series JW3307B with enhanced features of high accuracy, compact appearance, stable and reliable test index, etc.

FiberStore is pleased to announce a new return loss tester – Muti-mode Loss & Insertion Loss Test Station JW3307B, which is a high performance loss test station that is designed specially for Optical Passive Components production Test and Lab Test.

The multimode interpolation return loss measuring instrument is specially used in the optical fiber cable and other fiber optic passive devices, optical active device and optical fiber communication system of insertion loss and return loss test.

At the moment, this new return loss tester combines three different working modes as a return loss meter, optical power and loss meter and a stable laser source in one test station.

JW3307B is a special circuit designed, with large dynamic range and weak signal accurate monitoring analysis, it can provide USB communication function, automatic storage of data.

“This highly accurate return loss tester used Two LCD displays, and efficiently reduced eye strain of users. Besides the leakage design of optical power meter module and light source module also greatly reduced the operation procedures” commented Li Longqing, product manager, fusion splicer systems for FiberStore.

Standard configurations of this JW3307B tester includes the main body, power supply cable, the interface adapter ( FC/SC/ST/φ 2.5/φ 1.25), User Manual, FC/APC-FC/APC reference patch cord, Scrambler, Extinction Module, Cleaning Cotton Stick, Fuse, USB Cable, PC software, Foot Pedal. If you want to know more about this MM Return Loss & Insertion Loss Test Station JW3307B, visit www.fs.com or contact us by sales@fs.com

The 100G Industry Chain Still Needs To Improve

With the outbreak of emerging businesses such as high-definition video, social games, cloud computing and Internet of things, explosive growth of Internet content, so that the needs of next generation of Ethernet is increasing. Although the 40G/100G standards have been promulgated, the demand is also constantly stimulated, operators also verified the 100G with a commercial ability, but its scale popularity seems to have a distance, especially for 100G. What is the reason hindering the popularization, in technically what need to improve? When can really go the way of 100G?

The too high cost hinders 100G popularity And market maturity needs 3 years

China Telecom Technology Committee Director Wei Leping said, to achieve the scale of promotion, the cost of 100G applications should be controlled at as 5-6 times as the cost of 10G, there is a certain distance currently. Ruijie experts said, from the point of the cost of fiber optic transceiver, 100G module costs several times higher than the cost of 10G transceiver. It also requires the upstream and downstream of the industrial chain complement each other, continue working hard in chip integration, integration of optical module miniaturization and system design, to achieve cost reduction of the overall product. In addition, the architecture design of network manufacturers are also important factors, the role of the scale cost reduction such as supporting cables, wiring and tools also can not be ignored.

Overall, the 40G and 100G markets are in the early stage of market, but in contrast, the growth rate of 40G is faster than 100G, for example, Ruijie has made a considerable number of 40G commercial cases.

While the 100G standard has completed, but there are still not small challenges in the core of the optical module/high-speed signal processing technology, 100G commercial products also just launched by manufacturers. Therefore, experts believe that, the mature of 100G market is expected to take at least three years.

As we all know, the optical module technology cost is the key of the whole 100G system cost. But the 100G optical module devices are mainly controlled by foreign companies, although there are some Chinese enterprises introduced the 100G optical modules, but the quantity is too small, which virtually increases the 100G system cost.

There are still defects in technical and need to further improve the industrial chain

The 100G industrial chain including chip, optical devices, router to optical transmission system, and even the deployment, but the current situation is that, in the fiber optic module, the high-end core technology are basically controlled by foreign countries. Many experts said, the Chinese module makers have not domestic semiconductor chip production technology,  no continuous wavelength tunable lasers and high-end modulator chip, the manufacturer can do 100G optical devices is rare. Although there are more and more manufacturers to join this camp now, but many companies just re-processing of imported products, the lack of core technology, so there is no competition.

In addition to the short supply and not enough maturity of chip, optical devices and so on, some experts pointed out, the 100G industry chain supporting needs to be further improved, not only because the 100G optical network construction was just started, but also because the development of the 100G still faces challenges from the technology and market, for example, still exist cognitive gap in the line, construction, adjusting and testing, industry chain parties need to work together.

40/100G complement each other

Demand determines the market. From the current applications, in addition to some large data centers, the vast majority applications do not need the 100G bandwidth now, the bandwidth of 40G is sufficient; while the 40G products are more cost-effective than 100G products, and is expected to last a period of time, so the 40G products develop more smoothly than 100G in the moment. But apparently, the scene requires higher performance is relatively urgent demand for 100G, typical scenes such as super computing, cluster computing, etc. In the future, 40G and 100G will complement each other, service users in different application scenarios.

Transmode iAccess Addresses Large-scale Optical Access with WDM-PON

Transmode Systems AB says unveiled its iAccess portfolio, which leverages its iWDM-PON offering to help service providers roll out Ethernet access networks for applications such as business Ethernet and mobile backhaul services.

The iAccess package combines a new compact, low-cost network interface (NID) with the company’s I-WDM – PON hardware and Enlighten multi-layer network management system to provide what Transmode asserts is a low-cost, simple to install/configure/manage, and highly scalable approach to last mile Ethernet applications. The systems use a “remote port” architecture which makes all NIDs into extensions of the Ethernet Muxponder to which they are connected.

With the remote port architecture, the NID automatically takes device and service configuration data from the network when it is connected. This removes the need for a separated IP address for each NID, saying these sometimes scare resources. Coupled with the colorless optical layer through the WDM-PON optics, iAccess creates a highly automated, simple to operate, and scalable system, according to Transmode. This is particularly true in comparison to other approaches that are either derived from more complex and expensive optical access platforms or are based on simple hardware designed for residential applications, the company adds.

The iAccess is thus ideally suited to the delivery of Ethernet-based services that need to scale to large volumes or where simplicity is key. Transmode continues. Installation procedures are quick and simple and Enlighten allows operators to create service templates to speed up deployment of multiple identical or similar services – enabling operators to minimize open costs in addition to the lower initial capex costs.

Sten Nordell, Transmode’s CTO, said, “The new iAccess solutions is a great step forward in terms of simplifying and scaling Ethernet access networks while also enabling network operators to hit the right price points for these high volume services. We have created a real plug-and-play solution where the WDM-PON enabled NID is simply connected to the access fiber, powered up and then services are automatically created. This enables operators to quickly roll out new services with the right level of carrier class functionality such as Metro Ethernet Forum Carrier Ethernet 2.0 services.”

Published by FiberStore, industry news – www.fs.com

Buy Cost Effective CWDM Fiber Optic Products

Buy Cost Effective CWDM Fiber Optic Products

The use of fiber optic cables for communication has opened up gates for communication multiplexing technologies that maximize the capabilities at minimum costs. CWDM(Coarse wavelength division multiplexing), modulates different wavelength laser beams with multiple signals. In effect, this means maximized use of a single optical fiber to transmit and receive a large number of signals, minimizing costs for telecom companies. Companies simply use the right optical amplifiers, multiplexers and demultiplexers to enhance capacity of the fiber optic using CWDM technology.

Related technologies are DWDM(dense wavelength division multiplexing) and conventional WDM. Conventional WDM use the 3rd transmission window with a wavelength of 1550nm, accommodating up to 8 channels. DWDM is the same but with a higher density channel. Systems may use 40 channels, each at 100 GHz spacing or 80 channels spaced 50 GHz apart. A technology, the ultra dense WDM is capable of working at a spacing of only 12.5 GHz, allowing more channels. DWDM and WDM are expensive in contrast to CWDM.

In CWDM technology, there is an increase in channel space. This translates to requirement of less sophisticated and less costly transceiver devices. Operating in the same window of 1550 nm and making use of OH-free silica fibers, maximum efficiencies are achieved in channels 31, 49, 51, 53, 55, 57, 59 and 61. The channels are spaced 20 nm apart. DWDM spaces them 0.4 nm apart. Less precision optics and lower cost, uncooled lasers with lower maintenance requirements can therefore be used in CWDM devices, operating in the region of 1470, 1490, 1510, 1530, 1550, 1570, 1590 and 1660nm. 18 different channels can be used with wavelengths up to 1270 nm. In addition to being cost effective, power consumption for laser devices used in CWDM technology is also far less. CWDM signals can not be transmitted long range but are perfect for applications within a range of 60 km such as in a city and for CATV(cable television) networks allowing upstream and downstream signals.

A number of manufacturers offer all related CWDM multiplexers, demultiplexers and optical amplifiers. Networking solution providers are the right people to seek guidance for use of CWDM, DWDM or WDM technology. They carry out the entire installation and commissioning of the right, integrated devices for error-free high speed, high data transmissions over fiber optic lines. Cost and performance optimized CWDM solutions with built in expansion capabilities are available from reliable and trusted online network solution companies.

Fiberstore can be the right choice with years of experience and technological expertise to provide the right CWDM solution. We are experienced on fiber optic network products. All of our CWDM multiplexers and CWDM transceivers have the best warranty and very competively priced as well as being of the highest quality. So you can buy our products with confidence.

Huawei Still Maintains Its Leading Position In 2013 Global Broadband Aggregation Equipment Market

1Q13 global DSL, PON and FTTH equipment revenue declined 7% compared with 4Q12, down to $ 1.5 billion; although its global sales of EPON and GPON equipment respectively dropped 5% and 4%, Huawei still maintaining its leader position in global broadband aggregation equipment market (world market share of 33%).

FiberStore news, on June 6th, 2013, Infonetics Research principal analyst Jeff Heynen said, broadband aggregation equipment market got a poor start this year, although the performance of various regions and different technical aspects is different, but the overall revenue began a continuous decline from the first quarter of last year.

“EMEA (Europe, Middle East and Africa) suffered a heavy blow, the region DSL, PON and FTTH equipment sales in this region declined by 27% compared with last quarter, ending the growth of previous three consecutive quarters. The EPON sales in the Chinese market have fallen sharply, but due to China Telecom and China Unicom continuing deploy FTTH GPON-based to provide 20M access services, GPON equipment sales in the region has achieved eight consecutive quarters of growth. Meanwhile, as operators increase investment to resist the competition of DOCSIS 3.0 technology, the North American market contrarian, successfully avoided a quarter of weakness as its previous peculiar”, said Heynen.

The highlights of broadband aggregation equipment market in first quarter of 2013

1Q13 global DSL, PON and FTTH equipment revenue declined 7% compared with 4Q12, down to $ 1.5 billion;

Due to seasonal and Russia, the Middle East carriers initial GPON equipment purchase tide coming to an end, and PON equipment sales in EMEA fell sharply by 50% after achieved double-digit growth in two consecutive quarters;

Despite its global EPON and GPON equipment sales respectively appeared 5% and 4% decline, Huawei maintains its leader position in revenue of global broadband aggregation equipment market (accounting for 33% market share);

Alcatel-Lucent ranked second in global broadband aggregation equipment market, followed by ZTE; ZTE shared China Telecom’s FTTx business by cheap price, its revenue was not that good for several consecutive quarters.

Mellanox Acquired Danish Optical Interconnect Component IPtronics

Following the announcement of acquisition of silicon photonics manufacturer Kotura two weeks ago, the storage network vendors Mellanox Technologies Ltd. recently announced that the company will acquire a Danish private IPtronics A / S, reflecting determination of them enhancing the light transmission capability. Mellanox will spend $ 47.5 million in cash for the acquisition. IPtronics A / S is the industry’s well-known application of parallel optical transmitter and receiver technology developers. Board of Directors of Mellanox and IPtronics has approved the details of the transaction, Mellanox is expected in the second half to complete the transaction.

IPtronics provides multi-channel vertical cavity surface emitting laser (VCSEL) driver, modulator drivers and transimpenndance amplifier. Mellanox’s platform is already in use of IPtronics products. The same with the acquisition of Kotura, Mellanox said that IPtronics products are embedded in its current solutions, and that the acquisition enhances its ability to deliver complete end-to-end optical interconnect solutions at 100-Gbps and higher speeds to meet the growing demands of applications used in high-performance, Web 2.0, cloud, data center, database, financial services and storage environments.

The proposed acquisition of IPtronics is highly complementary with our recently proposed acquisition of Kotura. IPtronics’ parallel optical interconnect ICs further solidify our strategy to have a full end-to-end solution for the server and storage interconnect,” said Mellanox president and CEO Eyal Waldman.

Mellanox plants to establish its first R&D center in Europe at IPtronics’ premises in Roskide, Denmark, and further expan its customer support presence in Europe. It will keep IPtronics’ existing product lines to ensure continuity for customers and partners.

“We are very pleased to joint the Mellanox team and look forward to working together to further push forward the development of the combined company” said IPronics A / S co-founder and CEO Niels Finseth.

Published by FiberStore, business news – www.fs.com

on June 5, 2013