Optical fiber tap

Details Optical fiber tap Optical fiber tap

1982-09-09

1989-02-07

Sikes, William L.

G02B 636

Patent

active

048027235

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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"Optical-Fibre Tap with Low Insertion Loss," F. R. Gfeller et al, Electronics Letters, vol. 15, No. 15, Jul. 19, 1979, pp. 448-450.
Optical Fibre Communication, by Technical Staff of CSELT, pp. 587-591 and 640.
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"Optical Directional Coupler Using Tapered Directions in Multimode Fibers," T. Ozeki et al, Applied Physics Letters, vol. 28, No. 9, May 1, 1976, pp. 528-529.
"Fused Conically Tapered Fibre-Optical Power Divider," E. G. Rawson et al, Electronics Letters, vol. 18, No. 11, May 27, 1982, pp. 447-448.
U.S. patent application, Ser. No. 367,120, filed Apr. 19, 1982, "Low Loss Optical Fiber Splicing," G. F. DeVeau, Jr. et al.

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