Optical demultiplexer with multi-channel power control and...

Details Optical demultiplexer with multi-channel power control and... Optical demultiplexer with multi-channel power control and...

2005-09-06

2005-09-06

Phan, Hanh (Department: 2633)

Optical communications

Transmitter and receiver system

Including pumping

C398S092000, C398S094000, C398S079000, C398S081000, C398S140000, C398S141000, C398S147000, C398S158000, C398S197000, C398S202000, C398S206000, C398S208000, C398S209000, C398S214000, C359S337000, C359S341430

Reexamination Certificate

active

06941079

ABSTRACT:
Systems and methods for controlling power of WDM channels in a WDM receiver. A preamplifier is provided prior to a demultiplexer in the WDM receiver chain. The gain of the preamplifier may be controlled based on power measurements made on individual WDM channels. A filter with controllable tilt may be employed to compensate for amplifier gain tilt and assure that all of the WDM channels remain within the dynamic range of the photodetector and receiver electronics. This provides improved bit error rate performance.

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