Title :
Efficiency improvement by high-index cladding in LiNbO3 waveguide quasi-phase-matched wavelength converter for optical communication
Author :
Sato, D. ; Morita, T. ; Suhara, T. ; Fujimura, M.
Author_Institution :
Dept. of Electron., Osaka Univ., Japan
fDate :
4/1/2003 12:00:00 AM
Abstract :
Quasi-phase-matched difference frequency generation devices for the 1.5-μm band using a LiNbO3 waveguide with a high-index cladding layer of As2S3 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.
Keywords :
claddings; integrated optics; lithium compounds; optical communication equipment; optical frequency conversion; optical phase matching; optical wavelength conversion; wavelength division multiplexing; 1.5 micron; 30 mm; As/sub 2/S/sub 3/; LiNbO/sub 3/; LiNbO/sub 3/ waveguide quasi-phase-matched wavelength converter; guided mode profiles; high normalized conversion efficiency; high-index cladding; high-index cladding layer; interaction length; optical communication; quasi-phase-matched difference frequency generation devices; Frequency conversion; Lithium niobate; Nonlinear optical devices; Nonlinear optics; Optical design; Optical fiber communication; Optical frequency conversion; Optical noise; Optical waveguides; Optical wavelength conversion;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.809320
