Thin film optical switching device

Details Thin film optical switching device Thin film optical switching device

1976-03-10

1978-05-30

Corbin, John K.

350358, G02B 514

Patent

active

040920607

ABSTRACT:
A thin-film optical switching device has a substrate of fused quartz, an optical slab waveguide or Corning glass No. 7059, a thin film crossing a portion of the length of the waveguide, and an interdigital transducer on the substrate for generating an elastic surface wave to propagate it through the thin film. The optical waveguide, and thin film have respective parameters such that almost all energy of an optically guided wave and the elastic surface wave are concentrated into the thin film while the optically guided wave within the thin film undergoes acousto-optical interaction, that is, Bragg diffraction.

REFERENCES:
patent: 3753157 (1973-08-01), Ash et al.
patent: 3856378 (1974-12-01), Brandt et al.
Kuhn et al., article in Applied Physics Letter, Sep. 15, 1970, pp. 265-267.
Shah article in Applied Physics Letter, Jul. 15, 1973, pp. 75-77.
Ohmachi article in Journal of Applied Physics, Sep. 1973, pp. 3928-3933.
Suematsu et al., article in IEEE Journal of Quantum Electronics, QE-10, Feb. 1974, pp. 222-229.
Leon et al., article in IBM Tech. Disc. Bull., Jan. 1973, p. 2630.

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