Optical receiver of direct detection type

Details Optical receiver of direct detection type Optical receiver of direct detection type

1993-03-22

1994-03-15

Chilcot, Jr., Richard E.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359122, 359156, 359134, 359160, 359189, H04B 1006

Patent

active

052950131

ABSTRACT:
An optical receiver according to the present invention is used for detecting FSK or PSK signal light directly. The receiver has a PM fiber and a peak detector. The peak detector detects an amplitude of a demodulated output signal. In accordance with an output signal of the peak detector, a polarization condition of a signal light to be supplied to the PM fiber is controlled so as to keep the output of the peak detector maximum.

REFERENCES:
patent: 4856093 (1989-08-01), Mohr
patent: 4989200 (1991-01-01), Olshansky et al.
patent: 5052051 (1991-09-01), Naito et al.
patent: 5191457 (1993-03-01), Yamazaki

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