Signal sampler microbending fiber test clip

Details Signal sampler microbending fiber test clip Signal sampler microbending fiber test clip

1986-01-24

1987-06-09

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356 731, 350 9615, G01N 2100

Patent

active

046721983

ABSTRACT:
The invention relates to a hand-held device for detecting whether or not an optical fiber is carrying a light signal. The device includes a spring loaded hook for grabbing an exposed optical fiber anywhere along its length, thereby introducing microbending, a photodetector for responding to the presence of light emitted in the proximity of the microbend, and a light emitting diode connected by way of an amplifier to the photodetector for indicating when a light signal has been detected. Upon release of the spring loaded hook, the fiber returns to its normal state. The device can be easily modified to indicate not only the presence of a light signal, but also the strength of the signal and the direction in which the signal is being transmitted.

REFERENCES:
patent: 2516657 (1950-07-01), Spendlove
patent: 3864629 (1975-02-01), Danna
patent: 3884585 (1975-05-01), Lebduska
patent: 4253727 (1981-03-01), Jeunhomme et al.
patent: 4270839 (1981-06-01), Cross
patent: 4288161 (1981-09-01), Fortescue
patent: 4477725 (1984-10-01), Asawa et al.
J. Acoust. Soc. Am., Mar. 1980, "Fiber Optic Pressure Sensor", Fields et al., pp. 816-818.
Catalog: Measuring Instruments for Optical Fiber Communic. Systems, 1985, Anritsu Electrical Co., Ltd., pp. 47-49.

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