Optical fiber test instrument with mechanically positioned attenuator
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United States of America Patent
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Dec 31, 1996
Grant Date -
N/A
app pub date -
Oct 24, 1994
filing date -
Oct 24, 1994
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Abstract
An optical test instrument, for testing response of an optical medium to optical energy, comprises a light source for emitting optical energy in response to electrical energy, a detector for providing an electrical output signal in response to incident optical energy, and a propagation path for delivering optical energy from the light source to the medium under test and for delivering optical energy from the medium under test to the detector. A positioning mechanism displaces an optical attenuator element between a first position, in which it is out of the propagation path, and a second position, in which it is interposed in a segment of the path in which the optical energy is propagated as a beam.
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