Title :
The photorefractive effect of optical directional couplers with variable spacing
Author :
Hwang, Shug-June ; Lee, Wei-Yu ; Lin, Gen-Sin ; Wu, Shaur-Chian ; Lee, Ching-Kuen
Author_Institution :
Dept. of Electr. Eng., Tatung Inst. of Technol., Taipei, Taiwan
Abstract :
The authors review the functions of directional couplers with variable spacing, and examine the performance of these couplers for phase mismatch induced by the photorefractive effect. The photorefractive damage of Ti:LiNbO3 directional couplers with variable spacing has been investigated. Using a theoretical model based on the weak coupled wave equations with the effective index method to analyze the coupling characteristics of these devices, it is shown that no explicit degradation in performance is obtained for devices exposed at lower intensity
Keywords :
directional couplers; ferroelectric devices; integrated optics; lithium compounds; optical couplers; optical waveguides; photorefractive effect; titanium; LiNbO3:Ti; degradation; optical directional couplers; performance; phase mismatch; photorefractive effect; review; variable spacing; weak coupled wave equations; Directional couplers; Optical coupling; Optical crosstalk; Optical devices; Optical films; Optical modulation; Optical waveguides; Performance analysis; Photorefractive effect; Waveguide transitions;
Conference_Titel :
Applications of Ferroelectrics, 1990., IEEE 7th International Symposium on
Conference_Location :
Urbana-Champaign, IL
Print_ISBN :
0-7803-0190-0
DOI :
10.1109/ISAF.1990.200329
