Abstract

We report a method for cutting z-oriented LiNbO3 substrates into nearly arbitrary shapes using a pulsed UV laser to controllably fracture the crystal. The end surfaces appear optically smooth. Ti-diffused waveguides terminated using this technique have fiber-waveguide-fiber insertion losses which are equal to the lowest values reported for waveguide end faces prepared using conventional mechanical polishing techniques.

© 2004 IEEE

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J. Lightwave Technol. (2)

K. Noguchi, O. Mitomi and H. Miyazawa, "Millimeter-wave Ti:LiNbO3 optical modulators", J. Lightwave Technol., vol. 16, pp. 615-619, 1998.

E. J. Murphy, T. O. Murphy, A. F. Ambrose, R. W. Irvin, B. H. Lee, P. Peng, G. W. Richards and A. Yorinks, "16 × 16 strictly nonblocking guided-wave optical switching system", J. Lightwave Technol., vol. 14, pp. 352-358, 1996.

Other (9)

M. C. Cardakli, et al. "Tunable all-optical time slot interchange and wavelength conversion using difference frequency generation and optical buffers", IEEE Photon. Technol. Lett., vol. 14, pp. 200 -202, 2002.

D. Kunimatsu, et al. "Subpicosecond pulse transmission over 144 km using midway optical phase conjugation via a cascaded second order process in a LiNbO3 waveguide", Photon. Technol. Lett., vol. 12, pp. 1621-1623, 2000.

R. S. Weis and T. K. Gaylord, "Lithium niobate: summary of physical properties and crystal structure", Appl. Phys. A, vol. 37, pp. 191 -203, 1985.

I. P. Kaminow and L. W. Stulz, "Losses in cleaved Ti-diffused LiNbO 3 waveguides", Appl. Phys. Lett., vol. 33, pp. 62-64, 1978 .

J. J. Veselka and S. K. Korotky, "Optimization of Ti:LiNbO 3 optical waveguides and directional coupler switches for 1.56 µm wavelength", J. Quantum Electron., vol. QE-22, pp. 933-938, 1986.

L. McCaughan and E. J. Murphy, "Influence of temperature and initial titanium dimensions on fiber-Ti:LiNbO3 waveguide insertion loss at lambda = 1.3 µm ", J. Quantum Electron., vol. QE-19, pp. 131-136, 1983.

F. Heismann, D. A. Gray, B. H. Lee and R. W. Smith, "Electrooptic polarization scramblers for optically amplified long-haul transmission systems", IEEE Photon. Technol. Lett., vol. 6, pp. 1156-1158, 1994.

F. Heismann, M. D. Divino and L. L. Buhl, "Mirror-folded polarization-independent wavelength filter", IEEE Photon. Technol. Lett., vol. 3, pp. 219-221, 1991.

A. d'Alessandro, D. A. Smith and J. E. Baran, "Multichannel operation of an integrated acoustic-optic wavelength routing switch for WDM systems", IEEE Photon. Technol. Lett., vol. 6, pp. 390-393, 1994.

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