Title :
Electrooptically wavelength-tunable polarization converter utilizing strain-optic effect on X-cut LiNbO3
Author :
Wang, Tzyy-Jiann ; Chung, Jyuhn-Shyurng
Author_Institution :
Inst. of Electro-Opt. Eng., Nat. Taipei Univ. of Technol., Taiwan
Abstract :
A new electrooptically wavelength-tunable polarization converter by strain-optic effect on LiNbO3 is presented. The polarization conversion is achieved by the tilt of waveguide principal axis caused by the stress induced by the proton-exchanged region on the single side of the waveguide. Simply increasing the proton-exchange time can enlarge the stress-distributed region and its interaction with the input light, thus, the conversion efficiency can be enhanced. By electrooptic effect, the wavelength of maximum conversion can be tuned at a rate of 0.081 nm/V with a maximum conversion efficiency of 92.4%.
Keywords :
electro-optical effects; integrated optics; lithium compounds; optical polarisers; optical tuning; optical waveguides; piezo-optical effects; 92.4 percent; LiNbO3; X-cut LiNbO3; electrooptic effect; electrooptic wavelength tuning; integrated optics; optical waveguide; polarization converter; strain-optic effect; stress; Electrooptic effects; Fabrication; Lattices; Magnetic materials; Optical polarization; Optical waveguides; Protons; Stress; Wavelength conversion; Wavelength converters;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.833935
