Optical fiber tap
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United States of America Patent
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-
Feb 7, 1989
Grant Date -
N/A
app pub date -
Sep 9, 1982
filing date -
Sep 9, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Light guided by an optical fiber is tapped by bending the fiber, and substantially surrounding a portion of the fiber with a tube that couples a portion of the optical energy to a detector. The tube can be bent to increase the efficiency of collection of optical energy. The tube can be tapered to improve coupling to small detectors. The loss introduced by the tap is typically in the range of 0.001 to 1.0 dB, and the collection efficiency is high. The technique can be used for single mode or multimode optical fibers, and the fiber can typically remain coated. A large number of taps, typically several hundred, can be applied or removed without disrupting a signal carried by an optical fiber.
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