Optical switch array

Details Optical switch array Optical switch array

1982-10-28

1987-03-10

Sikes, William L.

350 9614, G02B 610

Patent

active

046486860

ABSTRACT:
An optical switch array including a substrate in the main surface of which is formed a plurality of inlet waveguides arranged side-by-side with a predetermined pitch and a like plurality of outlet waveguides each arranged in line with the corresponding inlet waveguide with a gap therebetween is provided. The gap is filled with a material having a temperature dependent index of refraction, which is lower in value than the waveguides at normal temperature but becomes comparable in value to the waveguide when heated thereby optically coupling the paired inlet and outlet waveguides.

REFERENCES:
patent: 3819250 (1974-06-01), Kibler
patent: 4236156 (1980-11-01), Eden
patent: 4384761 (1983-05-01), Brady et al.
"High Speed Cutoff Modulator using a Ti-Diffused LiNbo.sub.3 Channel Waveguide", by Neyer et al., Appl. Phys. Lett., 35(3), Aug. 1, 1979.
"Optical Bistability in LiNbo.sub.3 using a Monolithically Integrated Directional Coupler", European Conference, London, Integrated Phy., pp. 61-62. Sep. 14-16, 1981.
"Temperature Dependence of the Optical Properties of Ferroelectric LiNbo.sub.3 and LiTao.sub.3 ", by Miller et al., vol. 9, #4, Applied Phys. Letter, Aug. 15, 1979.

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