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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 12, Iss. 8 — Aug. 1, 1987
  • pp: 567–569

Ti-concentration inhomogeneities in Ti:LiNbO3 waveguides

Leon McCaughan and Kent D. Choquette  »View Author Affiliations


Optics Letters, Vol. 12, Issue 8, pp. 567-569 (1987)
http://dx.doi.org/10.1364/OL.12.000567


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Abstract

Distributed fluctuations in the effective index of a waveguide can explain all the nonideal optical characteristics (including optical cross talk) observed in Ti-diffused LiNbO3 directional-coupler switches. We find that these spatial-index fluctuations are not a result of the photolithographic processes used to define the channel waveguides. Measurements of undiffused Ti films have an envelope of concentration variations approximately seven times that of the diffused Ti channel waveguides. The magnitude of these inhomogeneities is consistent with that required to produce the optical cross talk in current devices.

© 1987 Optical Society of America

History
Original Manuscript: March 18, 1987
Manuscript Accepted: May 4, 1987
Published: August 1, 1987

Citation
Leon McCaughan and Kent D. Choquette, "Ti-concentration inhomogeneities in Ti:LiNbO3 waveguides," Opt. Lett. 12, 567-569 (1987)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-12-8-567


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References

  1. L. McCaughan, IEEE J. Lightwave Technol. LT-2, 51 (1984). [CrossRef]
  2. L. McCaughan, K. D. Choquette, IEEE J. Quantum Electron. QE-22, 947 (1986). [CrossRef]
  3. L. McCaughan, presented at SPIE Symposium on Integrated Optics, Cambridge, Mass., 1986.
  4. E. J. Murphy, T. C. Rice, L. McCaughan, G. T. Harvey, P. H. Read, IEEE J. Lightwave Technol. LT-3, 795 (1985). [CrossRef]
  5. M. Minakata, S. Saito, M. Shibata, S. Miyazawa, J. Appl. Phys. 49, 4677 (1978). [CrossRef]
  6. M. N. Armenise, C. Canoli, M. DeSario, A. Carnera, P. Mazzoldi, G. Cellotti, J. Appl. Phys. 54, 6223 (1983). [CrossRef]
  7. C. E. Rice, R. J. Holmes, J. Appl. Phys. 60, 3836 (1986). [CrossRef]

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