Wavelength measurement apparatus

Details Wavelength measurement apparatus Wavelength measurement apparatus

G - Physics

01

J

G01J 9/00 (2006.01) G01J 3/06 (2006.01)

Patent

CA 2371988

Light under measurement whose wavelength is continuously swept is incident on fiber-optic Etalon. The fiber-optic Etalon transmits the light under measurement each time the wavelength of the light under measurement satisfies specific conditions. A PD detects the transmitted light of the fiber-optic Etalon and outputs the intensity of the light under measurement. A counter counts the number of peaks of the output of the PD. A CPU calculates the wavelength of the light under measurement based on the count value of the counter.

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