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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 21, Iss. 1 — Jan. 1, 1996
  • pp: 42–44

Efficient coupling into tapered proton-exchanged LiNbO3 waveguides fabricated by vertically controlled immersion

Gary Y. Wang and Elsa Garmire  »View Author Affiliations


Optics Letters, Vol. 21, Issue 1, pp. 42-44 (1996)
http://dx.doi.org/10.1364/OL.21.000042


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Abstract

Planar LiNbO3 waveguides with a 5-mm tapered region and a 10-mm homogeneous slab waveguide region were fabricated by a double proton-exchange process. The 4-μm waveguide entrance gives rise to a coupling efficiency as high as 93%; the precise control of the depth profile of the tapered region results in a low 1-dB power transfer loss from the tapered region to the 0.4-μm-depth working region. The techniques developed provide an alternative to prism coupling into planar waveguides in Čerenkov second-harmonic generation applications.

© 1996 Optical Society of America

History
Original Manuscript: July 6, 1995
Published: January 1, 1996

Citation
Gary Y. Wang and Elsa Garmire, "Efficient coupling into tapered proton-exchanged LiNbO3 waveguides fabricated by vertically controlled immersion," Opt. Lett. 21, 42-44 (1996)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-21-1-42

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