Signal sampler microbending fiber test clip
First Claim
1. A device for testing for signals on an optical fiber comprisinga housing;
- a shaft having first and second ends, longitudinally reciprocable in said housing;
a hook portion on said first end of said shaft;
means limiting sliding movement of said shaft such that said second end is at all times within said housing and said hook portion is movable from a position close to an end of said housing to a position removed a short distance therefrom;
spring means in said housing for biasing said hook portion of said shaft to the position close to an end of said housing;
operating means for moving said shaft such that said hook portion is at the position removed a short distance from said housing thereby engaging said hook portion with an optical fiber and introducing microbending of said fiber when said spring means is operative upon said shaft;
means within said housing for detecting the presence of light emitted in the proximity of said microbending; and
means responsive to said means for detecting for indicating when a light signal has been detected.
1 Assignment
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Accused Products
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.
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Citations
8 Claims
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1. A device for testing for signals on an optical fiber comprising
a housing; -
a shaft having first and second ends, longitudinally reciprocable in said housing; a hook portion on said first end of said shaft; means limiting sliding movement of said shaft such that said second end is at all times within said housing and said hook portion is movable from a position close to an end of said housing to a position removed a short distance therefrom; spring means in said housing for biasing said hook portion of said shaft to the position close to an end of said housing; operating means for moving said shaft such that said hook portion is at the position removed a short distance from said housing thereby engaging said hook portion with an optical fiber and introducing microbending of said fiber when said spring means is operative upon said shaft; means within said housing for detecting the presence of light emitted in the proximity of said microbending; and means responsive to said means for detecting for indicating when a light signal has been detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification