Laser bias current stabilization for burst mode fiber optic comm

Details Laser bias current stabilization for burst mode fiber optic comm Laser bias current stabilization for burst mode fiber optic comm

1986-02-24

1987-11-24

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455607, 455613, 455618, H04B 900

Patent

active

047094168

ABSTRACT:
A fiber-optic communication system for data bursts includes a plurality of nodes, each including a laser diode transmitter. In order to reduce the noise floor of the system, each laser diode receives bias current only when it is transmitting data. Due to the propagation delay between nodes, there is a dead time between data bursts received by each node during which no data signals are received. The bias current of the laser diode is adjusted following each data transmission, so that the light attributable to laser operation during the setting of bias is received during the dead time. The adjustment is accomplished by stepping an up-down counter by one clock pulse following transmission of each data burst.

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