Integrated optical waveguide polarizer

Details Integrated optical waveguide polarizer Integrated optical waveguide polarizer

1985-08-12

1987-10-06

Sikes, William L.

G02B 610

Patent

active

046978682

ABSTRACT:
A single-mode optical waveguide polarizer for use in conjunction with electrooptical devices that operate best when presented with only a single polarization mode. The polarizer is fabricated on a conventional substrate, such as lithium niobate, using a waveguide strip of indiffused material, such as titanium. To achieve polarization discrimination, a polarizer section of the waveguide strip is made small enough in width to support only a single polarization mode, specifically the TM mode, but not the orthogonal TE mode. Losses are minimized by the use of tapered waveguide sections adjacent to the polarizer section.

REFERENCES:
patent: 3920314 (1975-11-01), Yajima
patent: 3957340 (1976-05-01), Giallorenzi
patent: 4006964 (1977-02-01), Mahlein et al.
patent: 4359260 (1982-11-01), Reinhart et al.
Kobayashi et al., Appl. Phys. Lett., 32(5), Mar. 1, 1978, "An Optical Waveguide TE-TM Mode Splitter", pp. 300-302.
Horimatsu et al., IOOC '81, Third International Conference on Integrated Optics and Optical Fiber Communications, San Fco., CA, U.S.A., Apr. 27-29, 1981, "TE/TM Mode Splitter Using an Intersecting Waveguide", pp. 68-69.

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