Optical: systems and elements – Optical frequency converter
Reexamination Certificate
2007-07-03
2007-07-03
Sanghavi, Hemang (Department: 2874)
Optical: systems and elements
Optical frequency converter
C359S330000
Reexamination Certificate
active
10991082
ABSTRACT:
The present invention relates a wavelength conversion apparatus capable of making the wavelength of output light constant even when the wavelength of input light is changed. The wavelength conversion apparatus comprises a first wavelength converter and a second wavelength converter which are provided in series between an input terminal and an output terminal. The first wavelength converter generates four-wave mixing by input light and a first pumping light, generates an intermediate light having a new wavelength by the four-wave mixing, and outputs the intermediate light and the input light. The second wavelength converter generates four-wave mixing by the intermediate light and the input light, respectively outputted from the first wavelength converter, and a second pumping light, generates output light having a new wavelength by the four-wave mixing, and outputs the generated output light.
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McDermott Will & Emery LLP
Sanghavi Hemang
Sumitomo Electric Industries Ltd.
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