Optical waveguides – With optical coupler – Input/output coupler
Reissue Patent
2011-03-08
2011-03-08
Sanghavi, Hemang (Department: 2874)
Optical waveguides
With optical coupler
Input/output coupler
C385S024000, C372S020000, C372S102000
Reissue Patent
active
RE042206
ABSTRACT:
A planar optical waveguide is formed having sets of locking diffractive elements and means for routing optical signals. Lasers are positioned to launch signals into the planar waveguide that are successively incident on elements of the locking diffractive element sets, which route fractions of the signals back to the lasers as locking feedback signals. The routing means route between lasers and output port(s) portions of those fractions of signals transmitted by locking diffractive element sets. Locking diffractive element sets may be formed in channel waveguides formed in the planar waveguide, or in slab waveguide region(s) of the planar waveguide. Multiple routing means may comprise routing diffractive element sets formed in a slab waveguide region of the planar waveguide, or may comprise an arrayed waveguide grating formed in the planar waveguide. The apparatus may comprise a multiple-wavelength optical source.
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Greiner Christoph M.
Iazikov Dmitri
Mossberg Thomas W.
Sanghavi Hemang
Schwabe, Williamson & Wyatt, P.C .
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