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    3G SDI Video SFP Application

    2010-06-03 00:00 GrantDatacom

    A  single  wavelength,  bi-directional  (SWBiDi)  transmission  technology  [1],  on  the  other  hand,  uses  one  fiber  and  one wavelength for a simultaneous communication in both directions. For example, in a P2P access network, the wavelength can be at ~1550nm (or ~1310nm) for both downstream and upstream signals.  This reduces CAPEX and  OPEX for the network operators  since  they  need  to  deploy  only  one  kind  of  transceivers  at  ~1550nm (or  ~1310nm).    This  also  guarantees  a  fool-proof  installation  of  transceivers  without  any  confusion  since  all  the  transceivers  are  identical  and  there  is  one  fiber.  In  a WDM-BiDi  system,  this  is  only  a  viable  approach  for  providing  each  channel  a  100%  bi-directionally  dedicated  (or symmetric)  bandwidth.  This technology  may  face  between  upstream  and  downstream  signals  a  cross-talk  and  an interferometric beat noise, both coming from reflections at the interface between a transceiver and a channel link fiber with PC type connectors, which may impose a limit on the maximum allowable channel loss, or in other words, the maximum transmission distance.  These reflections, however, can be mitigated by using APC type connectors.

     

    SMPTE 424M is a standard published by SMPTE which expands upon SMPTE 259M,

    SMPTE 344M, and SMPTE 292M allowing for bit-rates of 2.970 Gbit/s and 2.970/1.001 Gbit/s over a single-link coaxial cable. These bit-rates are sufficient for 1080p video at 50 or 60 frames per second.

     

    GrantDatacom HD 3G SDI video optical transceivers are available in SFP packages and in different configurations.

     

     

    Features

    l Robust error free transmission of signals from 50Mbps to 3Gbps

    l non MSA pin arrangement or MSA pin arrangement

    l Supports video pathological patterns for SD-SDI, HD-SDI and 3G-SDI

    l Diagnose and control via I2C interface including: Monitoring of laser bias current, average output power, receive optical power, supply voltage and temperature

     

    Video SFP Dual Transmitter / Video Dual Receiver SFP / Video Transceiver/ Video CWDM SFP/ Video optical SFP Single Transmitter / Video optical module Single Receiver / Video Dual TX/ Video Dual RX/ BiDi Video optical SFP

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