Optical wavelength measurement system

Details Optical wavelength measurement system Optical wavelength measurement system

1996-11-08

1998-03-17

McGraw, Vincent P.

Optics: measuring and testing

By shade or color

With color transmitting filter

356419, G01J 326

Patent

active

057293473

ABSTRACT:
A wavelength measurement system is provided which allows the very accurate measurement of wavelengths in a relatively small predetermined range. A transmission ratio is formed consisting of the power of an optical signal which has passed through a thin-film interference filter divided by the power of a control signal. A table look up is performed in a stored transmission ratio wavelength table. The system is also used in a self stabilizing laser, and a spectrometer.

REFERENCES:
patent: 4998256 (1991-03-01), Ohshima et al.
patent: 5287367 (1994-02-01), Yanagawa
patent: 5450207 (1995-09-01), Fomenkov
patent: 5627648 (1997-05-01), Garrett

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