Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2008-05-20
2008-05-20
Pak, Sung (Department: 2874)
Optical waveguides
With optical coupler
Particular coupling structure
C385S018000, C385S033000, C385S037000
Reexamination Certificate
active
07376311
ABSTRACT:
An apparatus and method are provided for manipulating light beams propagated through an optical apparatus that includes a planar lightwave circuit (PLC) and free-space optics unit. A multi-wave optical signal coupled to the PLC is propagated through a first and second waveguide array to generate a phased array output at an edge facet of the PLC. The phased array output at the edge facet is spatially Fourier transformed by the lens to generate a spectrally resolved image having a discrete light spot for each channel of the input optical signal, which is coupled to a pixelated optical receiving unit. When the optical receiving unit is a reflector, one or more of the discrete light spot are reflected to a desired waveguide array of a PLC to produce a desired output. When the optical receiving unit is a pixelated transmissive modulator, one or more of the discrete light spot are modulated as they pass through the modulator.
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patent: 6807372 (2004-10-01), Lee et al.
patent: 7257285 (2007-08-01), Doerr et al.
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“Compact, wavelength-selective 1×2 switch utilizing a planar lightwave stack and a MEMS micromirror array,” by D. M. Marom and C.R. Doerr, published in Optical MEMS Conference in Aug. 2004.
Doerr Christopher Richard
Marom Dan Mark
Lucent Technologies - Inc.
Pak Sung
Rahll Jerry T.
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