G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 26/00 (2006.01) G02B 6/28 (2006.01) G02B 6/35 (2006.01)
Patent
CA 2071200
2071200 9109330 PCTABS00005 A switch (10) for controlling the transmission of light from a first optical fiber (F1) to at least at second optical fiber (F2) or from a single bidirectional optical fiber (F1) back to itself includes a housing (22) having a spherical concave reflector (40) mounted therewithin. Fiber mounting means (M) is provided for mounting optical fiber(s) at a predetermined location within the housing such that at least a portion of a beam of light emanating from the end face of one fiber propagates along an incidence path (52) toward the reflector from which it is reflected by the curved concave reflector along a predetermined reflectance path (54). A light interrupter (60) is mounted within the housing for switchable movement between a light transmissive state and a light interruptive state. A light absorbing member (76) is positioned such that residual light reflected from the light interrupter is directed toward and absorbed by the light absorbing member. A switch presence indicator (70) for providing an indication that the light interrupter is disposed in the interdiction position may also be included.
E. I. Du Pont de Nemours And Company
Sim & Mcburney
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