Spectrometer and optical spectrum analyzer

Details Spectrometer and optical spectrum analyzer Spectrometer and optical spectrum analyzer

2005-04-26

2005-04-26

Evans, F. L. (Department: 2877)

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

C356S334000

Reexamination Certificate

active

06885447

ABSTRACT:
The present invention relates to a spectrometer whereby the accuracy of wavelength measurement can be improved without being affected by the environment of use. The present invention is characterized by improvements made to a spectrometer for spectrally dividing the light under measurement by transmitting the components thereof at different, wavelength-by-wavelength angles, and receiving and detecting the light under measurement thus spectrally divided by the chromatic dispersion device using an optical detector. The apparatus according to the present invention comprises a refractive index compensation means for compensating changes in the angle at which the chromatic dispersion device transmits the light under measurement, according to changes in the refractive index of the medium in which the chromatic dispersion device is placed.

REFERENCES:
patent: 4983039 (1991-01-01), Harada et al.
patent: 5691847 (1997-11-01), Chen
patent: 6570652 (2003-05-01), Cappiello
patent: 6693745 (2004-02-01), Kondis et al.
patent: 20040042079 (2004-03-01), Ertel et al.
patent: 2000-304613 (2000-11-01), None
patent: 2000-321135 (2000-11-01), None

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