Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2005-06-01
2010-02-02
Doan, Jennifer (Department: 2874)
Optical waveguides
With optical coupler
Particular coupling structure
C385S015000, C385S031000, C385S039000
Reexamination Certificate
active
07657139
ABSTRACT:
The invention provides tunable delay or resonator devices in an electro optical substrate. Signals in at least one waveguide in the electro optical substrate pass through Y-junction reflectors which direct signals from one branch of the waveguide back into another branch of the waveguide. A coupled delay or resonator approximated loop is presented in an embodiment of the invention with opposing Y-junction reflectors. In other embodiments of the invention, a delay ladder is provided with selectable levels of delay from multiple outputs.
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Chen Jianxiao
Higuma Kaoru
Kawanishi Tetsuya
Yu Paul Kit Lai
Doan Jennifer
Greer Burns & Crain Ltd.
National Institute of Information and Communication
Sumitomo Osaka Cement Co. Ltd.
The Regents of the University of California
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