Process for manufacturing an integrated optical proximity couple

Details Process for manufacturing an integrated optical proximity couple Process for manufacturing an integrated optical proximity couple

1994-12-09

1996-05-28

Healy, Brian

Optical waveguides

Integrated optical circuit

385 24, 385 42, 385 50, 385130, 359115, 359127, 65385, 65386, 65402, G02B 612, H04J 1400, C03B 37023

Patent

active

055219934

ABSTRACT:
A device, utilized for the separation or combination of two signals of different wavelengths, of the type in which the waveguides comprise straight interaction segments (1.sub.1, 2.sub.1 ; 1.sub.in, 2.sub.in) parallel and close to one another and to curved approach segments with inflection points (1.sub.2, 2.sub.2, 1.sub.3, 2.sub.3 ; 1.sub.2n, 2.sub.2n, 1.sub.3n, 2.sub.3n), connected to the ends of the straight segments, and, for certain ones, to inputs/outputs (4,5,6) of the device. In accordance with the invention, the approach segments situated on at least the same side of the straight segments are free of any inflection point, the coupling of the straight segments being optionally modified to compensate for the variation of the coupling between the waveguides along said approach segments due to the omission of the inflection points.

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R. A. Betts et al., "Tunable Couplers Fabricated in K+/Na+ Ion Exchanged Glass", Electronic Letters, vol. 26, No. 12, Jun. 1990, pp. 786-788, Stevenage, Herts., U.K.
A. Takagi et al., "Broadband Silica-Based Optical Waveguide Coupler With Asymmetric Structure", Electronics Letters, vol. 26, No. 2, Jan. 1, 1990, pp. 132-133, Stevenage, Herts., GB.
H. C. Cheng et al., "A Dual Wavelength (1.3-1.56 .mu.m) Directional Coupler Demultiplexer by Ion Exchanger in Glass", IEEE Photonics Tech. Letters, No. 9, Sep. 2, 1990, pp. 637-639.
C. G. Nutt et al., "Passive Tuning of LiNbO.sub.3 Directional Coupler Structures", ECOC 88, 11-15 Sep. 1988, Part 1, pp. 595-598.

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