Open fiber control for optical transceivers

Details Open fiber control for optical transceivers Open fiber control for optical transceivers

2006-08-15

2006-08-15

Phan, Hanh (Department: 2613)

Optical communications

Diagnostic testing

Fault location

C398S177000, C398S173000, C398S010000, C398S017000, C398S021000, C398S038000, C398S135000, C398S136000, C398S137000, C398S182000, C398S138000, C398S139000, C398S197000, C398S192000, C398S202000, C398S206000, C398S208000, C398S209000, C398S213000, C398S214000, C385S018000, C385S024000

Reexamination Certificate

active

07092630

ABSTRACT:
The present invention implements open fiber control in an optical transceiver. During normal operation, the transceiver transmits signals through a connection to an optical network. When the connection is intact, the total power transmitted can be greater than the eye-safety limit. When the connection breaks, the transceiver detects the loss of signal and disables transmissions over all channels except for one. The transceiver continues transmission on the single enabled channel at an eye-safe level. When the connection is fixed and a signal reappears, the transceiver detects the signal reappearance and re-enables all channels that had previously been disabled. By allowing the transceiver to transmit with greater optical power when the connection is intact, an increased data rate and longer transmission distances can be achieved. At the same time, safety is preserved, because transmissions drop to acceptable power levels whenever a break is detected.

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