Optical channel analyzer with variable filter
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United States of America Patent
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-
Nov 2, 2010
Grant Date -
Sep 27, 2007
app pub date -
Mar 9, 2007
filing date -
Mar 9, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optical analyzer (14) for performing spectral analysis on an optical beam (18) includes an optical filter (28), a mover (30), an optical launcher (36), and an optical receiver (38). The optical filter (28) includes a filter area (46) that is a narrow band pass type filter having multiple alternative center bandwidths that are distributed along the filter area (46). The mover (30) moves the optical filter (28). The first optical launcher (36) directs the optical beam (18) at the filter area (46) so that the optical beam (18) is near normal incidence to the filter area (46). The optical analyzer (14) can be used to simultaneously monitor multiple optical signals. Additionally, the optical analyzer (14) can include a beam redirector (40) that causes the optical beam (18) to make two passes through the optical filter (28).
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