Optical devices

Details Optical devices Optical devices

1975-09-18

1978-03-07

Corbin, John K.

350 9615, 350 9631, G02B 514

Patent

active

040776999

ABSTRACT:
An opto-electronic element consists of a dielectric optical waveguide having a single crystal core of meta-nitroaniline. The element is made by feeding molten meta-nitroaniline into a hollow fibre along which a temperature gradient exists. Nucleation sets in at one end of the fibre and the temperature gradient is altered to promote crystal growth along the fibre. The element can be used as a polarizer, in isolators, harmonic generators or mixers. The action of the device depends on either the non-linear optical properties of the meta-nitroaniline or the optical anisotropy of the meta-nitroaniline. To make a polarizer the meta-nitroaniline core is surrounded by a cladding having a refractive index lying midway between two of the refractive indices of the meta-nitroaniline.

REFERENCES:
patent: 3781081 (1973-12-01), Rokos
Doytt, Stevenson "Optical-Fibre Waveguide with a Single Crystal Core", Electronics Letts. vol. 10, No. 22, Oct. 31, 1974, pp. 449-450.
Sosnowski T. P., "Polarization Mode Filters for Integrated Optics," Optics Communications, vol. 4, No. 6, Feb./Mar. 1972, pp. 408-412.
Uehara, S., Izawa T., Nakagome H., "Optical Waveguiding Polarizer" Applied Optics, vol. 13, No. 8, Aug. 1974, pp. 1753-1754.
Southgate, P. D., Hall D. S., "Anomalously High Non-linear Optical Effects in M-Nitroaniline" Appl. Phys. Lett., vol. 18, No. 10, May 15, 1971, pp. 456-458.
Ramaswamy, V., "Propagation in Asymmetrical Anistropic Film Waveguides" Applied Optics, June 1974, vol. 13, No. 6, pp. 1363-1371.
Kharusi, M. S., "Uniaxial and Biaxial Anistropy in Thin-Film Optical Waveguides" Journ. of Optical Society America, vol. 64, No. 1, Jan. 1974, pp. 27-35.

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