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    • 2. 发明申请
    • OPTICAL SWITCH
    • 光开关
    • WO1990004803A1
    • 1990-05-03
    • PCT/AU1989000459
    • 1989-10-23
    • AUSTRALIAN OPTICAL FIBRE RESEARCH PTY LIMITEDBRUNSWICK, RobertOTTEN, Pieter, Albert
    • AUSTRALIAN OPTICAL FIBRE RESEARCH PTY LIMITED
    • G02B26/02
    • G02B6/3516G02B6/3552G02B6/3572
    • An optical switch includes a body (14) for locating an end of an optical fibre, and a member (20) providing a reflective face (21) disposed to reflect at least a proportion of light received from the end of the fibre back along the fibre. This member (20) is movable by an externally applied magnetic, electric or electromagnetic field, relative to the fibre location body (14), to in turn relatively move the reflective face (21) between two different positions relative to the end of the fibre. In a method of assembling such a switch, the member (20) is adjusted to vary the displacement of the reflective face (21) from the end (13) of the fibre (12) until a desired higher value of reflected signal is monitored in the fibre. A second member (22) is then placed on the fibre location body (14) with a spring or the like to bias the reflective face (21) to maintain the aforesaid higher value. An external magnetic, electric or electromagnetic field is applied to move the reflective face (21) to a new position with respect to the end (13) of the fibre, and the second member (22) is adjusted relative to the fibre location body (14) to vary this new position until a desired lower value of reflected signal is monitored in the fibre.
    • 一种光学开关包括用于定位光纤端部的本体(14),以及提供反射面(21)的构件(20),该反射面设置成反射从光纤的端部接收的至少一部分光沿 纤维。 该构件(20)可通过相对于纤维定位体(14)的外部施加的磁,电或电磁场移动,从而相对于纤维端部在两个不同位置之间相对移动反射面(21) 。 在组装这种开关的方法中,调节构件(20)以改变反射面(21)与光纤(12)的端部(13)的位移,直到在 纤维。 然后用弹簧等将第二构件(22)放置在纤维定位体(14)上,以偏压反射面(21)以维持上述较高的值。 施加外部磁,电或电磁场以使反射面(21)相对于纤维的端部(13)移动到新位置,并且第二构件(22)相对于纤维定位体( 14)改变这个新的位置,直到在光纤中监视所需的较低的反射信号值。