Receiver for optical digital signals with dark current compensat

Details Receiver for optical digital signals with dark current compensat Receiver for optical digital signals with dark current compensat

1987-06-17

1988-12-20

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455608, 330 59, H04B 900

Patent

active

047929979

ABSTRACT:
A receiver for optical digital signals has a transimpedance amplifier, the input of which is connected to an operating voltage via an active photodiode, and the output of which is connected to an input of a comparator. An operational amplifier is provided, the one input of which is connected to the input of the transimpedance amplifier, and the other input of which is connected to the operating voltage via a further, unilluminated photodiode. A reference voltage at the other input of the comparator is generated from the output voltage of the operational amplifier via a voltage divider.

REFERENCES:
patent: 3978343 (1976-08-01), Broderick et al.
patent: 4293877 (1981-10-01), Tsunekana
patent: 4307469 (1981-12-01), Casper
patent: 4403159 (1983-09-01), Goerne et al.
patent: 4484223 (1984-11-01), Tsunekana
patent: 4630121 (1986-12-01), Suzuki et al.
patent: 4724315 (1988-02-01), Goerne
IBM Technical Disclosure Bulletin, vol. 21, No. 8, Jan., 1979 "High Sensitivity, Wide Range Photo-Amplifier" by M. Cappa, pp. 3115-3116.
Electronics Letters, vol. 18, No. 23, Nov. 11, 1982 "Transimpedance Optical Preamplifier Having a Common-Collector Front End", pp. 985 and 986.
Japan-58-3335, Mar. 25, 1983, vol. 7, No. 72 (E-166) (1217), "Optical Receiver", Masaru Ikeuchi.
National Semiconductor Corporation-1984 Telecommunications Databook pp. 5-23 "Monolithic TTL Fiber-Optic Receiver".

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