Optics: measuring and testing – For optical fiber or waveguide inspection
Reexamination Certificate
2005-12-27
2005-12-27
Nguyen, Tu T. (Department: 2877)
Optics: measuring and testing
For optical fiber or waveguide inspection
Reexamination Certificate
active
06980288
ABSTRACT:
An optical network analyzer for measuring an optical characteristic of an object to be measured, including: a first multiplexer for multiplexing a first optical signal which has transmitted the object to be measured, and a second optical signal having a frequency different from the first optical signal, and for outputting a third optical signal; a first photoelectrical converter for converting the third optical signal into a first electric signal; and a phase measurement block for comparing phases of the first electric signal and a first reference signal.
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Kido Takashi
Niki Shoji
Advantest Corporation
Nguyen Tu T.
Osha & Liang LLP
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