Finisar demonstrates first 4x25G DFB-based CFP modules

Finisar Corp., a provider of high-speed optical communications technology, is demonstrating at OFC/NFOEC: its first 4x25G DFB-based CFP optical transceiver with two 100G Ethernet (100GE) CFP modules transmitting IP packets error-free at 103.1 Gb/s over 20 kilometers of singlemode fiber; an 80km 10G SFP+ transceiver for telecom client and metro applications; and a new family of industrial temperature (-40 to 85C) SFP+ transceivers targeting wireless applications.

Finisar Corp., a provider of high-speed optical communications technology, is demonstrating at OFC/NFOEC: its first 4x25G DFB-based CFP optical transceiver with two 100G Ethernet (100GE) CFP modules transmitting IP packets error-free at 103.1 Gb/s over 20 kilometers of singlemode fiber; an 80km 10G SFP+ transceiver for telecom client and metro applications; and a new family of industrial temperature (-40 to 85C) SFP+ transceivers targeting wireless applications.

The company’s 100GE CFP prototype modules are based on four DFB lasers running at 25.8 Gb/s each, and compliant with the CFP Multi-source Agreement (MSA) and the 100GBASE-LR4 (4 x 25 Gb/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 will offer a decrease in power dissipation (12 watts) and cost when compared to first-generation CFP modules, according to a representative. Finisar's first-generation 100GE LR4 CFP module is in full production and shipping in volume.

"As we had previously announced to the industry, 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 at Finisar. "We believe that this technology represents a fundamental breakthrough, enabling a new generation of standards-based 100GE modules. 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."

The new multi-rate transceiver designed for 80km 10G telecom client and metro applications, including SONET LR-2, OTN P1L1-2D2, and 10G Ethernet ZR, demonstrate 10.7 Gb/s error-free transmission over 80km of singlemode fiber, as well as transmitter jitter generation within the SONET requirements at 10.7 Gb/s. The transceiver uses an internal CDR to improve signal integrity, enabling customers to design SFP+ line cards with a higher number of ports and longer traces between the SERDES chips and the transceiver ports.

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

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

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