Optical waveguides – Planar optical waveguide
Reexamination Certificate
2006-02-07
2006-02-07
Song, Sarah N (Department: 2874)
Optical waveguides
Planar optical waveguide
Reexamination Certificate
active
06996319
ABSTRACT:
The present invention provides a two-dimensional photonic crystal optical resonator and reflector having high light-extracting efficiency. A two-dimensional photonic crystal consisting of a slab-shaped body is created by periodically arranging holes having a refractive index different from that of the body. A waveguide is formed by providing a linear zone where no hole is bored. Two acceptor type point defects are formed by enlarging two holes spaced apart from each other by a distance L in the longitudinal direction of the waveguide. An appropriate selection of the distance L suppresses or increases the reflection and transmission of light at the point defects, allowing an efficient extraction of light resonating at the point defects. This allows the body to be used as an optical resonator for producing a resonance of light between the two point defects or optical reflector for reflecting light at the two point defects.
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patent: 6738551 (2004-05-01), Noda et al.
patent: 2002/0009277 (2002-01-01), Noda et al.
patent: A 2001-272555 (2001-10-01), None
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Asano Takashi
Noda Susumu
Japan Science and Technology Agency
Oliff & Berridg,e PLC
Song Sarah N
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