Integrated optics polarizing device

Details Integrated optics polarizing device Integrated optics polarizing device

1987-03-09

1988-10-18

Lee, John

350 9611, G02B 530

Patent

active

047782340

ABSTRACT:
An integrated optics polarizing device having a flat substrate made for example from lithium niobate, in which an integrated wave guide has been created by doping with titanium ions and one or more so called interaction regions interacting on the wave, formed within the material of the substrate, and having refraction indices such that a wave with a first polarization direction propagates in a guided mode in said wave guide and a wave with an orthogonal polarization is extinguished. Said interaction regions are obtained by modifying the material of said substrate in a controlled way by doping or ion substitution.

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"Ion Implantation and Integrated Optics", by Townsend, Journal of Physics E Scientific Instruments, vol. 10, No. 3, Mar. 1977, pp. 197-203.
"Normal-Mode Analysis of Semi-Leaky Type Anisotropic Thin-Film Optical Waveguides and Their Application of Thin-Film Mode Filter", by Y. Okamura et al., The Transactions of the IECE of Japan, vol. E 59, No. 4, Apr. 1976, p. 30.
"Fabrication and Characterization of Titanium Indiffused Proton Exchanged (Tipe) Waveguides in Lithium Niobate", Optics Communications, vol. 42, No. 2, Jun. 15, 1982, pp. 101-103.
Applied Physics Letters, vol. 25, No. 5, Sep. 1, 1974, p. 308, Noda, J., Saku, T., Uchida, N., "Fabrication of Optical Waveguiding Layer in LiTaO.sub.3 by CU Diffusion".
Review of the Electrical Communication Labs., vol. 26, Nos. 3-4, Mar.-Apr., 1978, p. 557, UEHARA, S, UESUGI, N., "Optical Waveguide Polarizer Using Anisotropic Crystal".
Appl. Phys. Lett., vol. 41, No. 7, Oct. 1, 1982, p. 607, Jackel, J. L., Rice, C. E., Veselka, J. J. "Proton Exchange for High-Index Waveguides in LiNbO.sub.3 ".

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