12 On/Off Optical Power Splitters Utilizing Strain-Induced Optical Waveguides in LiNbO3

Hong Sik JUNG  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E86-C   No.5   pp.762-764
Publication Date: 2003/05/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
Category: 
Keyword: 
strain-induced optical waveguides,  strain-optic effect,  optical power splitters,  LiNbO3,  electro-optic effect,  

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Summary: 
12 on/off power splitters at λ=0.63µm have been produced in LiNbO3 substrates using strain-induced channel waveguides formed by magnetron deposition of surface metal films and lift-off technology. The static strain resulting from thermal expansion mismatch between the substrate and the metal films induces a localized increase in the refractive index via the strain-optic effect. On/off voltage of about 25V has been demonstrated.