Two-way coupler for optical fibers

Details Two-way coupler for optical fibers Two-way coupler for optical fibers

1983-11-22

1988-09-27

Sikes, William L.

G02B 632

Patent

active

047737220

ABSTRACT:
Outgoing light signals from a virtual point source are transmitted to a confronting end of an optical fiber via a microlens, whose diameter approximately equals the fiber diameter, axially traversing a center hole of a large-diameter circular photodetector illuminated by incoming light signals from the same fiber end. A focusing lens or objective may be interposed between that fiber end and the photodetector with its microlens to create a field of parallel rays therebetween. The photodetector may be angularly subdivided into a plurality of sectoral portions which are electrically interconnected in series for producing an increased output voltage.

REFERENCES:
patent: 3657547 (1972-04-01), Mansfield
patent: 3991318 (1976-11-01), Duguay
patent: 4025157 (1977-05-01), Martin
patent: 4053764 (1977-10-01), Sierak et al.
"Optical Connector Measurement System" by J. S. Kolodzey et al, publ. Jun. 1979 in IBM Technical Disclosure Bulletin vol. 22, No. 1, pp. 47 and 48.
"High-radiance LEDs operate at 1.3 .mu.m for long-haul optic cable"by Kevin Smith, publ. May 24, 1979 in Electronics International vol. 52, No. 11, pp. 73, 74.

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