Broadband optical receiver with transformer coupled input circui

Details Broadband optical receiver with transformer coupled input circui Broadband optical receiver with transformer coupled input circui

1994-06-09

1996-05-14

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Signal isolator

250214A, 330308, G02B 2700

Patent

active

055170358

ABSTRACT:
In an optical receiver an optical signal received from a glass fiber is fed to an optoelectrical converter. To reduce the influence of parasitic capacitances, the two connection terminals of the converter are connected to a common ground potential via respective impedance elements which are equal, and are also connected by a pair of tapped sub-transformers to the input terminals of a broadband amplifier of the receiver. As a result, a symmetrical signal voltage is developed across the converter and across the input terminals of the amplifier, while the influence of the parasitic capacitances is halved.

REFERENCES:
patent: 5013903 (1991-05-01), Kasper
patent: 5179461 (1993-01-01), Blauvelt et al.
patent: 5239402 (1993-08-01), Little, Jr. et al.
patent: 5347389 (1994-09-01), Skrobko
"Optimum Biasing of Photodiodes as Used in Infrared Communications" IBM Technical Disclosure Bulletin, vol. 30, No. 6, Nov. 1987 pp. 213-214.

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