Title :
Polarization-independent LiTaO3 guided-wave electrooptic switches
Author :
Yoon, D.W. ; Eknoyan, O. ; Taylor, Henry F.
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
fDate :
2/1/1990 12:00:00 AM
Abstract :
Polarization-independent LiTaO3 optical switches that utilize the off-diagonal electrooptic coefficient r51 are discussed. The waveguides are formed by Zn vapor diffusion. Interguide transfer efficiencies of 84 and 88% for TM and TE polarizations, respectively, have been obtained. Modulation efficiency of 99.8% for TM and 95% for TE have been demonstrated at nearly equal voltages by thermally tuning to 20°C. The relatively high voltage-length product (30-35 V-cm) attained in these initial devices at a 0.633-μm wavelength is attributed to a weak overlap between optical and electrical fields in the periodic electrode structure
Keywords :
electro-optical devices; lithium compounds; optical communication equipment; optical switches; optical waveguide components; 0.633 micron; 20 degC; 84 percent; 88 percent; 95 percent; 99.8 percent; LiTaO3 optical switches; interguide transfer efficiencies; modulation efficiency; off-diagonal electrooptic coefficient; polarisation-independent guided-wave electrooptic switches; waveguides; Electrodes; Optical devices; Optical modulation; Optical polarization; Optical switches; Optical tuning; Optical waveguides; Tellurium; Voltage; Zinc;
Journal_Title :
Lightwave Technology, Journal of
