Spectroscopically selective filter device

Details Spectroscopically selective filter device Spectroscopically selective filter device

1976-04-15

1977-11-08

Corbin, John K.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356112, G02B 514

Patent

active

040573214

ABSTRACT:
A spectroscopically selective filter device for light which is being conveyed in a waveguide disposed on a substrate characterized by at least two Bragg reflectors with distributed feedback which are disposed at spaced given intervals on a surface of the waveguide, a pair of electrodes positioned on opposite surfaces of the waveguide and between each pair of Bragg reflectors, the waveguide in at least the region adjacent the electrodes consisting of electro-optical material and means for applying an electrical voltage on the electrodes to vary the index of refraction of the electro-optical material and to thus adjust the length of the optical path between each pair of reflector. Preferably, each of the reflectors is a grating which is either formed in a surface of the waveguide or in a material disposed on the surface. By applying a voltage of a fixed magnitude, a static filter device is produced, and by applying an alternating voltage, the device will act as an integrated optical scanning-Fabry-Perot-interferometer and modulate the passing light.

REFERENCES:
patent: 3675157 (1972-07-01), Kaminow et al.
patent: 3822929 (1974-07-01), Heidrich et al.
patent: 3868589 (1975-02-01), Wang
patent: 3891302 (1975-06-01), Dabby et al.
patent: 3970959 (1976-07-01), Wang et al.
Cheo "Pulse Amplitude Modulation of a CO.sub.2 Lasers in an Electro-Optic Thin-Film Waveguide" Appl. Phys. Lett. vol. 22, No. 5, Mar. 1973.

Affiliated with

Also associated with

Rating

Spectroscopically selective filter device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spectroscopically selective filter device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectroscopically selective filter device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-227006