Optical time domain reflectometer having a receiver with selecti

Details Optical time domain reflectometer having a receiver with selecti Optical time domain reflectometer having a receiver with selecti

1989-03-28

1990-10-02

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356 731, H01J 516

Patent

active

049609890

ABSTRACT:
An optical time domain reflectometer comprises a detector device for detecting optical energy received at an end of a fiber under test, an amplifier having an input terminal connected to the detector device, and a photoconductive switch connected between the amplifier input terminal and a reference potential level. The photoconductive switch is selectively illuminated.

REFERENCES:
patent: 4289398 (1981-09-01), Robichaud
patent: 4376285 (1983-03-01), Leonberger et al.
patent: 4490709 (1984-12-01), Hammond et al.
patent: 4632544 (1986-12-01), Form
patent: 4685799 (1987-08-01), Brininstool
patent: 4737026 (1988-04-01), Dalgoutte
A. G. Foyt and F. J. Leonberger, "Picosecond Optoelectronic Devices" published by Academic Press, Inc., Ch. 9, InP Optoelectronic Switches, pp. 271-311, (1984).

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