Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2005-11-01
2005-11-01
Kim, Ellen E. (Department: 2874)
Optical waveguides
With optical coupler
Particular coupling structure
C385S016000, C219S201000
Reexamination Certificate
active
06961495
ABSTRACT:
A thermo-optical device may use a heater to tune an optical device such as an optical switch, a Mach-Zehnder interferometer, or a variable optical attenuator, to mention a few examples. In some embodiments, polarization-dependent losses caused by the heating and power efficiency may be improved by defining a clad core including an optical core and cladding material on a substrate and covering the clad core on three sides with a heater.
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Chong Gabel
Mahesh Junnarker
Tsai Tsung-Ein
Kim Ellen E.
Trop Pruner & Hu P.C.
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