Constant output light attenuator and constant output light attenuating method
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United States of America Patent
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Apr 12, 2005
Grant Date -
Feb 19, 2004
app pub date -
Mar 19, 2003
filing date -
Sep 21, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a light attenuator or its attenuating method, a nonlinear optical material and an aperture section are placed respectively on a same optical axis, between a receiving optical finder and a sending optical fiber. The nonlinear optical material receives and refracts an input light outputted from the receiving optical fiber. The aperture section has an aperture, receives the light having passed through the nonlinear optical material, and outputs constant output light to the sending optical fiber by only allowing only a part of the light to be outputted from the aperture.
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