Temperature compensation of tunable acoustic optical filters

Details Temperature compensation of tunable acoustic optical filters Temperature compensation of tunable acoustic optical filters

1981-02-27

1983-12-20

Gruber, Felix D.

Boots, shoes, and leggings

350358, 350372, 364861, G02F 1135, G02F 129, G05B 1502

Patent

active

044221541

ABSTRACT:
The heating of a tunable-acoustic optical filter (TAOF) results in a drift in the calibration of the TAOF as the acoustic-optical medium temperature varies. In practicing the invention, the TAOF is calibrated by combining it in tandem with a broad band light source and a cell containing a medium that absorbs light at a known wave number. The TAOF is tuned to minimize the light transmitted through the elements, thereby tuning the TAOF to the wave number of maximum absorption which is a calibrated standard.

REFERENCES:
patent: 3928814 (1975-12-01), Feichtner
patent: 3982817 (1976-09-01), Feichtner
patent: 4265517 (1981-05-01), Blair et al.
patent: 4272825 (1981-06-01), Smithline et al.

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