Optical waveguides – Integrated optical circuit
Reexamination Certificate
2005-01-18
2005-01-18
Ullah, Akm Enayet (Department: 2874)
Optical waveguides
Integrated optical circuit
C385S015000, C385S027000, C385S031000, C385S037000, C385S039000, C359S328000, C359S329000
Reexamination Certificate
active
06845186
ABSTRACT:
An optical circuit is designed with demultiplexing and optical detection functionality with minimal crosstalk. An Nth order harmonic generation device is positioned before the demultiplexer to either convert the frequency or down convert the wavelength of the demultiplexed light wave by N-times. Upconverting the multiplexed signal at the receiver station is performed by either simultaneously upconverting N-times to create N times the original spacing between each optical channel or by upconverting the frequency of one optical channel at a time.
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Nakamura Koichiro
Oikawa Masahiro
Roychoudhuri Chandrasekhar
Serikov Vladimir V.
Yamashita Ken
Nippon Sheet Glass Co. Ltd.
Petkovsek Daniel
Ullah Akm Enayet
Whithan, Curtis & Christofferson, P.C.
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