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