Universal optical signal receiver

Details Universal optical signal receiver Universal optical signal receiver

1995-04-27

1998-04-28

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359194, 250214A, H04B 1006

Patent

active

057452768

ABSTRACT:
An optical receiver communication system converts optical signals modulated by analog or digital waveforms to RF signals. The optical receiver contains an automatic level control circuit to adjust the electronic gain of the system accordingly across a broad bandwidth spectrum. Two impedance matching circuit are designed using broad band matching technique to expand the bandwidth for increasing the maximum receivable frequency to 1 GHz. A RLC impedance matching circuit forms a resonant combination to maintain .+-.1 dB fluctuation between the low-and high-frequency limits of the bandwidth, and a 75 .OMEGA. impedance matching circuit creates a 180.degree. phase shift between the outgoing and the incoming signal for low return loss.

REFERENCES:
patent: 4998012 (1991-03-01), Kruse
patent: 5347389 (1994-09-01), Skrobko
patent: 5477370 (1995-12-01), Little et al.

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