LuminentOIC boosts GPON offerings with pluggable transceivers

MARCH 29, 2007 -- MRV Communications subsidiary LuminentOIC (search for LuminentOIC), a supplier of access and metro transceivers and CWDM, DWDM, and FTTP products, has unveiled a line of small-form-factor pluggable (SFP) GPON optical line terminal (OLT) transceivers.

The introduction of pluggable interfaces to GPON offerings affords system OEMs and carriers more flexibility in network deployments and the ability to build out and upgrade networks over time. The company's SFP OLT transceiver meets the strict guard time and preamble timing requirements of the ITU-T G.984 standard required to achieve maximum bandwidth efficiency.

Requiring a single reset input signal from the system media access control (MAC), the transceiver can fully recover incoming burst signals within the 44-bit preamble during both burst-mode and ranging conditions. With typical burst-mode receiver sensitivity of -31 dBm and overload performance of -5 dBm, the OLT product series offers more than 23-dB dynamic range during the burst-mode operation. The transceivers are capable of measuring and reporting received optical power for bursts as short as 200 nsec.

"The demand for end-to-end GPON solutions from our global customer base has driven innovation in burst-mode receiver technologies and has established a volume market for distributed-feedback (DFB) lasers and avalanche photodiode (APD) receivers," states Hui Nie, director of product management, FTTP, at LuminentOIC. "LuminentOIC is well positioned to continue to address emerging customer requirements in the access market due to our established high-volume manufacturing infrastructure and our vertical integration, from chip to transceiver."

LuminentOIC says its small-form-factor (SFF) type GPON OLT transceivers have been qualified by more than 15 system vendors globally and have shipped in volume since 2H06. The GPON SFP OLT product is available immediately, with volume production starting in 2Q07.

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