Method of fabrication an optical waveguide

Metal working – Piezoelectric device making

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295272, 29600, 20419218, 216 2, 216 24, 385 2, 385132, 427100, H01L 4108, G02B 610

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057491321

ABSTRACT:
A method for diffusing titanium into a single-crystal lithium niobate substrate and guided wave devices produced therefrom provide improved mode match with coupled fibers. Preferably, the titanium diffusion occurs at a diffusion temperature for a time between about 8 hours and about 18 hours. Outdiffusion of lithium oxide is allowed to occur during titanium diffusion. The outdiffused region, typically at least about 25 .mu.m, is much deeper than the titanium diffusion depth, typically about 5-10 .mu.m.

REFERENCES:
patent: 3837827 (1974-09-01), Carruthers et al.
patent: 4112148 (1978-09-01), Fonzi
patent: 4206251 (1980-06-01), Chen
patent: 4284663 (1981-08-01), Carruthers et al.
patent: 4376138 (1983-03-01), Alferness et al.
patent: 4400052 (1983-08-01), Alferness et al.
patent: 4439265 (1984-03-01), Alferness et al.
patent: 4607909 (1986-08-01), Sanford
patent: 4695121 (1987-09-01), Mahapatra et al.
patent: 4709978 (1987-12-01), Jackel
patent: 4714311 (1987-12-01), Auracher
patent: 4715027 (1987-12-01), Mahapatra et al.
patent: 4750979 (1988-06-01), Gee et al.
patent: 4775208 (1988-10-01), Robinson et al.
patent: 4776656 (1988-10-01), Sanford et al.
patent: 4778234 (1988-10-01), Papichon et al.
patent: 4786131 (1988-11-01), Mahapatra et al.
patent: 4789212 (1988-12-01), Bristow et al.
patent: 4791388 (1988-12-01), Sanford et al.
patent: 4801872 (1989-01-01), Kitano
patent: 4851079 (1989-07-01), Booth et al.
patent: 5189713 (1993-02-01), Shaw
patent: 5227913 (1993-07-01), McCaughan et al.
patent: 5267336 (1993-11-01), Sriran et al.
patent: 5319494 (1994-06-01), Miyaguchi et al.
patent: 5408566 (1995-04-01), Eda et al.
patent: 5436992 (1995-07-01), Wang et al.
patent: 5452382 (1995-09-01), Shionoya et al.
Akira Enohara, et al., "Optical Modulating Element and Its Driving Method," 06-110023, Apr. 22, 1994, Japanese patent abstract.
Hideaki Okayama, et al., "Manufacture of WaveGuide Type Optical Switch," 01-88403, Apr. 3, 1989, Japanese patent abstract.
Hiroshi Terui, "Molecular Crystal Optical Element and Its Manufacture," 59-166922, Sep. 20, 1984, Japanese patent abstract.
van der Tol, J.J.G.M. and Laarhuis, J.H., "A Polarization Splitter on LiNbO.sub.3 Using Only Titanium Diffusion," Journal of Lightwave Technology, vol. 9, No. 7, pp. 879-886 (Jul., 1991).
Noda, J., et al., "Effect of Mg Diffusion on Ti-Diffused LiNbO.sub.3 Waveguides," Journal of Appl. Physics 49(6), pp. 3150-5154 (Jun. 1978).
Komatsu, K., et al., "Titanium/Magnesium Double Diffusion Method for Efficient Fiber-LiNbO.sub.3 Waveguide Coupling," Electron Lett., vol. 22, pp. 881-882, 1986.
Bulmer, C. H., "Directional Coupling Measurements and Calculations in Ti:LiNbO.sub.3 Channel Waveguides," Naval Research Laboratory, pp. 74-79, Proceedings of SPIE, vol. 408, Apr. 5-6, 1983.
Jiang, P., et al., "Buried Optical Waveguide Polarizer by Titanium Indiffusion and Proton-Exchange in LiNbO.sub.3 ," IEEE Photonics Technology Letters, vol. 4, No. 8, pp. 881-883 (Aug., 1992).
Naitoh, H., et al., "Mode Control of Ti-Diffused LiNbO.sub.3 Slab Optical Waveguides," Appl. Opt., vol. 16, No. 9, p. 2546 (1977).
Burns, w. K., et al., "Ti Diffusion in Ti: LiNbO.sub.3 Planar and Channel Optical Waveguides," J. Appl. Phys. vol. 50, No. 10, p. 6175 (1979).

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