Optical channel monitor having an array of micro-mirrors
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United States of America Patent
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N/A
Issued Date -
May 15, 2003
app pub date -
Sep 25, 2002
filing date -
Sep 25, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A reconfigurable optical channel monitor selects and determines a parameter of desired optical channel(s) from and/or to an optical WDM input signal. The OCM includes a spatial light modulator having a micro-mirror device with a two-dimensional array of micro-mirrors that tilt between first and second positions in response to a control signal from a controller in accordance with a switching algorithm and an input command. A collimator, diffraction grating, and Fourier lens collectively converge the optical input channels onto the micro-mirrors array. The optical channel is focused onto a plurality of micro-mirrors. To select each input channel, a group of micro-mirrors associated with each desired input channel is tilted to reflect the desired input channel back along the return path to a photodetector and processing unit to determine a parameter of the selected input signal.
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