Optical waveguides – With optical coupler – Plural
Reexamination Certificate
2005-04-12
2005-04-12
Palmer, Phan T. H. (Department: 2874)
Optical waveguides
With optical coupler
Plural
C385S010000, C385S033000, C385S037000
Reexamination Certificate
active
06879750
ABSTRACT:
This invention provides a novel wavelength-separating-routing (WSR) apparatus that uses a diffraction grating to separate a multi-wavelength optical signal by wavelength into multiple spectral channels, which are then focused onto an array of corresponding channel micromirrors. The channel micromirrors are individually controllable and continuously pivotable to reflect the spectral channels into selected output ports. As such, the inventive WSR apparatus is capable of routing the spectral channels on a channel-by-channel basis and coupling any spectral channel into any one of the output ports. The WSR apparatus of the present invention may be further equipped with servo-control and spectral power-management capabilities, thereby maintaining the coupling efficiencies of the spectral channels into the output ports at desired values. The WSR apparatus of the present invention can be used to construct a novel class of dynamically reconfigurable optical add-drop multiplexers (OADMs) for WDM optical networking applications.
REFERENCES:
patent: 6625346 (2003-09-01), Wilde
patent: 6687431 (2004-02-01), Chen et al.
Chen Tai
Davis Joseph E.
Wilde Jeffrey P.
Capella Photonics, Inc.
Palmer Phan T. H.
Young Barry N.
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