Optical waveguides – Planar optical waveguide – Thin film optical waveguide
Patent
1997-08-18
2000-05-02
Pihulic, Daniel T.
Optical waveguides
Planar optical waveguide
Thin film optical waveguide
G02B 610
Patent
active
H00018481
ABSTRACT:
A rare-earth-doped waveguide device which exhibits stable cw laser and amplifier operation for near-infrared optical pumping in a room-temperature environment is provided. The waveguide device is comprised of an x- or y-cut LiNbO.sub.3 substrate on which metal-diffused channel optical waveguides are formed parallel to, or nearly parallel to, the crystallographic z-axis. The LiNbO.sub.3 substrate is rare-earth doped either by thermal diffusion of single or multiple rare-earth ions. Alternatively, the rare-earth doped substrate is doped with rare-earth ions during the growth of the crystal from which the substrate was prepared with additional thermal diffusion of rare-earth dopants as required. This orientation of the waveguide channel substantially parallel to the crystallographic z-axis permits reliable laser and amplifier action without the destabilizing effects of photorefractive optical damage.
REFERENCES:
patent: 4695121 (1987-09-01), Mahapatra et al.
patent: 4705346 (1987-11-01), Miyawaki
patent: 4717228 (1988-01-01), Thylen
patent: 4791388 (1988-12-01), Sanford et al.
patent: 4840816 (1989-06-01), Appleton et al.
patent: 5128948 (1992-07-01), Papuchon et al.
patent: 5197072 (1993-03-01), Harada et al.
patent: 5206925 (1993-04-01), Nakazawa et al.
patent: 5282260 (1994-01-01), Buchal et al.
patent: 5473722 (1995-12-01), Sohler et al.
patent: 5499256 (1996-03-01), Bischel et al.
patent: 5526371 (1996-06-01), Shmulovich et al.
S. Thaniyavarn, Wavelength-Independent, Optical-Damage-Immune LiNbO.sub.3 TE-TM Mode Convertor, Optics Letters, vol. 11, No. 1, Jan. 1986, pp. 39-41.
A. Donaldson et al, Phase-Matched Mode Converter in LiNbO.sub.3, Using Near-A-Axis Propagation, Electronics Letters, vol. 23, No. 25, Dec. 3, 1987.
N.A. Sanford et al, Direct-current Bias Stable Ti:LiNbO.sub.3 TE-TM Mode Convertors Produced by Magnesium Postdiffusion, Optics Letters, vol. 12, No. 7, Jul. 1987, pp. 531-5.33.
N.A. Sanford et al, Simplified Z-Propagating DC Bias Stable TE-TM Mode Convertor Fabricated in Y-Cut Lithium Niobate, Journal of Lightwave Technology, vol. 6, No. 6, Jun. 1988, pp. 898-902.
M. Fujimura et al, CW and Q-SW Laser Oscillation in Thermally Nd-Diffused Z-Propagation Ti:LiNbO.sub.3 Waveguide, 2nd Optoelectronics & Communications Conference Technical Digest, Jul. 1997, pp. 114-115.
J. Amin et al, Tunable Coupled Cavity Waveguide Laser at Room-Temperature in Nd-Diffused Ti:LiNbO.sub.3, Optics Letters, vol. 19, 1541 (1994).
R.A. Becker et al, Photorefractive Effects in LiNbO.sub.3 Channel Waveguides: Model and Experimental Verification, Applied Physics Letters, 47, 1024 (1985).
C.H. Huang et al, Er-Indiffused Ti:LiNbO.sub.3 Channel Waveguide Optical Amplifiers pumped at 980 nm, Electronics Letters, 32, 215 (1996).
R.L. Holman, The Optical Properties and Processing of Lithium Niobate Optical Waveguides, Proceedings SPIE, 408, 14 (1983).
N.A. Sanford et al, Optical Damage Effects in Z-Propagating LiNbO.sub.3 Channel Waveguides Fabricated on X-and Y-Cut Substrates, SPIE Vo. 704 Integrated Optical Circuit Engineering IV, pp. 58-61 (1986).
N.A. Sanford et al, Optical Damage Effects in Z-axis Oriented LiNbO.sub.3 Channel Waveguides, Proceedings of the Sixth IEEE Int'l Symposium on Applications of Ferroelectrics, pp. 4-7 (1986).
H. Suche, Erbium-Doped Integrated Lasers and Amplifiers, Proc. 7th Eur. Conf. on Int. Opt. pp. 565-570 (1995).
Amin Jaymin
Aust John Andrew
Bendett Mark P.
Sanford Norman A.
Pihulic Daniel T.
Tracy Emery L.
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