Optical transmission system and terminal device applicable...

Details Optical transmission system and terminal device applicable... Optical transmission system and terminal device applicable...

2005-05-31

2005-05-31

Pascal, Leslie (Department: 2633)

Optical communications

Transmitter and receiver system

Including feedback from receiver

C398S063000, C398S193000

Reexamination Certificate

active

06901222

ABSTRACT:
Disclosed herein is a terminal device including a photodetector, amplitude detecting circuit, light source, drive circuit, and control circuit. The photodetector receives a first optical signal. The amplitude detecting circuit detects the amplitude of an output from the photodetector. The drive circuit supplies a drive current to the light source so that the light source outputs a second optical signal. The control circuit decreases and increases the drive current according to an increase and decrease in the amplitude detected by the amplitude detecting circuit, respectively. In the case that this terminal device is used with another terminal device to construct a network, the dynamic range of the other terminal device can be reduced. Accordingly, the use of this terminal device can improve the extensibility of the network.

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patent: 5063612 (1991-11-01), McKeown
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patent: 10-275939 (1998-10-01), None
patent: 11-126935 (1999-05-01), None

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