Optical waveguides – With optical coupler – Plural
Reexamination Certificate
2007-02-13
2007-02-13
Bovernick, Rodney (Department: 2874)
Optical waveguides
With optical coupler
Plural
C385S018000
Reexamination Certificate
active
10033549
ABSTRACT:
The present invention provides a method and apparatus for optical spectral power monitoring that employ a time-division-multiplexed detection scheme. The optical spectral power monitoring apparatus of the present invention uses a wavelength-dispersing means such as a diffraction grating to separate a multi-wavelength optical signal into multiple spectral channels and an array of beam-manipulating elements positioned to correspond with the spectral channels. The beam-manipulating elements are individually controllable so as to direct the spectral channels into an optical detector in a time-division-multiplexed sequence. The optical spectral power monitoring apparatus may further employ a polarization diversity scheme, thereby becoming polarization insensitive. This enables the apparatus of the present invention to enhance spectral resolution, while providing improved accuracy in optical spectral power detection. Accordingly, a variety of novel optical spectral power monitors can be constructed according to the present invention, that are well suitable for WDM optical networking applications.
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Garrett Mark H.
Polynkin Pavel G.
Wilde Jeffrey P.
Bovernick Rodney
Capella Photonics, Inc.
DLA Piper (US) LLP
Stahl M.
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