G - Physics – 01 – M
Patent
G - Physics
01
M
G01M 11/02 (2006.01) G01J 9/00 (2006.01) G01M 11/00 (2006.01)
Patent
CA 2358727
It is intended to provide an apparatus for measuring wave dispersion characteristic and the like only with one fiber pair. This apparatus is provided with a variable wavelength light source 12 for generating variable wavelength light whose wavelength is variable, a fixed wavelength light source 14 for generating fixed wavelength light whose wavelength is fixed, optical modulators 15a and 15b for modulating the variable wavelength light and the fixed wavelength light with a predetermined frequency, a fiber coupler 16 for entering composite light generated by composing the variable wavelength light with the fixed wavelength light into a device under test, a circulator 22 for extracting a variable wavelength light component from a transmitted light transmitted through a fiber pair 30, and an optical filter 24 for extracting a variable wavelength light component from the transmitted light, and measures a phase difference of the variable wavelength light component and the like with the fixed wavelength light component as a reference for obtaining chromatic dispersion characteristics and the like. It is possible to measure the phase difference and the like with one optical fiber line 32 through which the composite light is transmitted, thereby measuring the phase difference and the like with the one fiber pair 30.
Imamura Motoki
Kawazawa Toshio
Kimura Eiji
Advantest Corporation
Gowling Lafleur Henderson Llp
Kdd Submarine Cable Systems Inc.
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