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Efficiency improvement by high-index cladding in LiNbO3 waveguide quasi-phase-matched wavelength converter for optical communication

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4 Author(s)
Sato, D. ; Dept. of Electron., Osaka Univ., Japan ; Morita, T. ; Suhara, T. ; Fujimura, M.

Quasi-phase-matched difference frequency generation devices for the 1.5-/spl mu/m band using a LiNbO/sub 3/ waveguide with a high-index cladding layer of As/sub 2/S/sub 3/ were designed and fabricated. By the cladding, the guided mode profiles were modified, and their overlap was increased. A high normalized conversion efficiency of 790%/W was obtained for 30-mm interaction length.

Published in:

Photonics Technology Letters, IEEE  (Volume:15 ,  Issue: 4 )

Date of Publication:

April 2003

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