Optical waveguides – With optical coupler – Switch
Reexamination Certificate
2007-10-30
2007-10-30
Pak, Sung (Department: 2874)
Optical waveguides
With optical coupler
Switch
Reexamination Certificate
active
11236291
ABSTRACT:
An optical pulse shaper without polarization dependencies includes, a planar lightwave circuit (PLC) having an arrayed waveguide and free space optics, combined with a lens and micromirror array characterized by piston-motion. The micromirror array is coupled to a controller that provides signals to the array for adjusting the positions of the micromirrors, which are used as a spatial light modulator to provide at least phase modulation to one or more of the separated frequency components of an input optical signal. The frequency separated components, including modified components, are recombined and directed back to the PLC to form a synthesized optical pulse. Information regarding the characteristics of the synthesized optical pulse is extracted from a spectrogram of that pulse. Extracted information is provided to the controller and responsive thereto the controller may generate signals for adjusting the position of one or more micromirrors.
REFERENCES:
patent: 2004/0136648 (2004-07-01), Chen et al.
patent: 2004/0234192 (2004-11-01), Madsen
patent: 2004/0252938 (2004-12-01), Ducellier et al.
patent: 2005/0185878 (2005-08-01), Doerr et al.
Dorrer Christophe J.
Marom Dan Mark
Lucent Technologies - Inc.
Pak Sung
Rahll Jerry T.
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