High sensitivity optical receiver suitable for single optical si

Details High sensitivity optical receiver suitable for single optical si High sensitivity optical receiver suitable for single optical si

1994-03-03

1995-02-14

Goldstein, Herbert

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359158, 356345, 364576, H04B 1006, G01B 902

Patent

active

053900421

ABSTRACT:
An optical receiver for receiving tile optical signals with high speed modulation at a high sensitivity. In this optical receiver, a local beam synchronized with a carrier of the optical signal is generated, and multi-frequency local beam components obtained from the local beam are spatially resolved to obtain spatially resolved beams with mutually different frequencies. Then, the optical signal and the obtained spatially resolved beams are entered into the photo-detector element array simultaneously to obtain an interference fringe pattern. The received optical signal is then reconstructed by Fourier analyzing the interference fringe pattern obtained by the photo-detector element array.

REFERENCES:
patent: 4790655 (1988-12-01), Yamamoto et al.
patent: 4950880 (1990-08-01), Hayner
Article from Optics Communications, dated Nov. 1, 1985, entitled "A Simple Monitoring System for Single Subpicosend Laser Pluses Using an SH Spatial Autocorrelation Method and a CCD Image Sensor", by Yuzo Ishida and Tatsuo Yajima.

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