9 March 2011

Finisar demos 80km 10G SFP+ transceiver and first 4x25G DFB-based CFP modules; launches industrial-temperature SFP+ transceivers

At this week’s Optical Fiber Communication conference (OFC 2011) in Los Angeles, CA (6–10 March), fiber-optic communications component and subsystem maker Finisar Corp of Sunnyvale, CA, USA is giving several transceiver demonstrations in booth 1701 at the Los Angeles Convention Center.

The industry’s first demonstration of a 4x25G DFB-based CFP optical transceiver will show two 100G Ethernet (100GE) CFP modules transmitting IP packets error-free at 103.1Gb/s over 20km of single-mode fiber, greatly exceeding the 10km maximum distance standardized by IEEE's 100GBASE-LR4 for this application. In addition, Finisar is demonstrating an 80km 10G SFP+ transceiver for telecom client and metro applications. The firm is also introducing its new family of industrial temperature (–40ºC to 85ºC) SFP+ transceivers targeting wireless applications.

4x25G DFB-based 100GE CFP modules for 100Gb/s Ethernet

The 100GE CFP prototype modules are based on four DFB lasers running at 25.8Gb/s each, and are fully compliant with the CFP multi-source agreement (MSA) and the 100GBASE-LR4 (4x25Gb/s) optical interface defined by the IEEE 802.3ba standard. By using integrated transmitter optics based on directly modulated 4x25G DFB lasers, Finisar's second-generation CFP modules offer a significant decrease in both power dissipation (12W) and cost compared with firm's first-generation 100GE LR4 CFP module (which is already in full production and shipping in volume).
“We are on track with the development of our next generation of 4x25G CFP transceiver modules,” says Christian Urricariet, director of product marketing for high-speed optics. “This technology represents a fundamental breakthrough, enabling a new generation of standards-based 100GE modules,” he believes. “Compared to other competing solutions, these modules will be more power efficient, more cost effective, and will enable a new generation of higher-density systems based on 100GE.”

80km 10G SFP+ transceiver for telecom client and metro applications

Finisar is also demonstrating its new multi-rate transceiver (designed for 80km 10G telecom client and metro applications, including SONET LR-2, OTN P1L1-2D2 and 10G Ethernet ZR), showing 10.7Gb/s error-free transmission over 80km of single-mode fiber, as well as transmitter jitter generation within the SONET requirements at 10.7Gb/s. The transceiver uses an internal CDR (clock and data recovery) to improve the signal integrity, enabling customers to design SFP+ line-cards with a higher number of ports and longer traces between the SerDes (serializer/deserializer) chips and the transceiver ports.

The 80km 10G SFP+ has the same performance as its equivalent XFP transceiver, but with 1.5W lower power consumption and a smaller footprint. The new transceiver extends Finisar’s 10G SONET/SDH/OTN SFP+ product family, enabling telecoms systems companies to deploy high-density next-generation 10Gb/s platforms.

Industrial-temperature 10G SFP+ transceivers

Finisar is introducing a new family of industrial-temperature (I-Temp) 10G SFP+ transceivers for applications such as access backhaul, wireless (LTE) and other outside-plant equipment. The I-Temp transceiver family includes a 300m SFP+ SR (short reach), a 10km SFP+ LR (long reach), and a 40km SFP+ ER (extended reach) module. The 10km SFP+ LR transceiver is in production now, while the 300m SFP+ SR and 40km SFP+ ER transceivers will both begin sampling in second-half 2011.

“Our engineering investments in these next-generation technologies demonstrate Finisar’s commitment to the transceiver market,” says VP of marketing Rafik Ward, who adds that the firm offers a complete portfolio of products across different data-rates, applications and form factors.

Finisar demos first 1x9 WSS with Flexgrid technology

At OFC, Finisar is giving what it claims is the first public demonstration of a 1x9 WSS (wavelength selective switch) with Flexgrid technology, part of the firm's reconfigurable optical add-drop multiplexers (ROADM) portfolio. The new 1x9 WSS with Flexgrid technology (which is shipping now) has been designed to enable telecoms carriers to migrate to higher data rates, including 400Gb/s and beyond, without replacing deployed WSS modules.

Finisar says that its Flexgrid technology is unique in its ability to allow carriers to dynamically change channel spacing to precisely match the required signal bandwidth with minimal wasted optical spectrum. Specifically, existing ROADM deployments concentrate on fixed 50GHz channel spacing, which can support data rates up to 100Gb/s. By leveraging adjustable channel spacing from 50 to 200GHz in spacing increments of 12.5GHz, Flexgrid enables carriers to efficiently carry all future transmission formats up to 1Tb/s on existing ROADM infrastructure, at whatever bandwidth these signals may require.

A key aspect of the demonstration is the flexibility and performance of Liquid Crystal on Silicon (LCoS) technology, which serves as the architectural foundation for Finisar’s WSS platform. The LCoS architecture enables Flexgrid technology to be implemented through firmware and calibration changes alone. Furthermore, existing ITU standard 50GHz and 100GHz grids are fully supported, with no performance penalty. “Flexgrid is the critical technology that will allow tier-one carriers to efficiently deploy next-generation networks,” believes CEO Eitan Gertel.

In addition to the above demonstrations, Finisar is displaying equipment from its portfolio of optical communication products including transceivers, transponders, wavelength selective switches, active cables, advanced optical components, and passive devices.

Tags: Finisar SFP+ transceiver DFB-based CFP modules WSS

Visit: www.finisar.com

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