JANUARY 20, 2009 -- Fujitsu Ltd. (search for Fujitsu) has announced the development of what it claims is the world's first optical transceiver compliant with ITU-T G.984.2 Class C and Class C+ for GPON. The new devices offer "significant" advantages over existing products that comply with the ITU-T G.984.2 Class B+ specification, the company adds.
Fujitsu will begin selling optical transceivers compliant with Class C at the end of January 2009 and with Class C+ at the end of April 2009.
The new transceivers are designed to accommodate a larger number of access network subscribers, greatly improve the flexibility of network deployments, and reduce network costs.
Fujitsu says it has improved optical output and receiver sensitivity, allowing for the use of a greater number of optical branches (64 or more) and loss reduction lines for optical-fiber channels, as well as increasing the distance between subscriber premises (40 km or more) by developing:
- burst-mode receiver technology that can receive faint burst-mode signals (discontinued optical signals with different times) consuming half the power or less, when compared to existing Class B+ compliant transceivers
- a highly efficient thermal dissipation structure and control software to ensure stable operation of optical devices across a wide temperature range, enabling 150% more power output when compared to existing Class B+ transceivers.
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