Optical source with reduced relative intensity noise
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United States of America Patent
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Mar 8, 1994
Grant Date -
N/A
app pub date -
Jul 27, 1992
filing date -
Jul 27, 1992
priority date (Note) -
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status (Latency Note)
Importance
Abstract
Apparatus is provided for producing an optical carrier with low relative intensity noise. A portion of light output from a light source is sampled. An error signal representative of the relative intensity noise contained in the light output is generated. The error signal is subtracted from the light output from the light source to provide an optical carrier in which the relative intensity noise has been substantially reduced. The error signal can be subtracted using either an external optical intensity modulator or by converting the electrical signal to an optical signal and directly coupling it to the light output from the light source.
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