Optical waveguides – Planar optical waveguide
Reexamination Certificate
2007-04-17
2007-04-17
Connelly-Cushwa, Michelle (Department: 2874)
Optical waveguides
Planar optical waveguide
C385S131000
Reexamination Certificate
active
11150981
ABSTRACT:
Provided is a waveguide photodetector including: a first clad layer disposed on a substrate; a core layer disposed on the first clad layer and for absorbing predetermined light; a second clad layer disposed on the core layer; and at least one subsidiary layer inserted in the first clad layer and the second clad layer. In this structure, the photodetector has about the same spot size as that of an optical fiber or planar lightwave circuit (PLC), so that incident light can be absorbed without loss, and the photodetector can more efficiently combine with the optical fiber or PLC and operate even at high power.
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Baek Yong Soon
Ko Hyun Sung
Park Jeong Woo
Sim Eun Deok
Connelly-Cushwa Michelle
Electronics and Telecommunications Research Institute
Ladas & Parry LLP
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