DocumentCode :
1109755
Title :
The photorefractive effect in titanium indiffused lithium niobate optical directional couplers at 1.3 µm
Author :
Harvey, George T. ; Astfalk, Greg ; Feldblum, Avi Y. ; Kassahun, Bahiru
Author_Institution :
AT&T, Princeton, NJ, USA
Volume :
22
Issue :
6
fYear :
1986
fDate :
6/1/1986 12:00:00 AM
Firstpage :
939
Lastpage :
946
Abstract :
In titanium indiffused lithium niobate directional couplers, photorefractive damage is seen at a wavelength of 1.3 μm when power levels in the guide exceed 25 mW ( 
W/cm2) with time constants on the order of 100 h. Damage is not observed at lower power levels. Using a theoretical model based on the coupled wave equations and extrapolating the high power results, no significant degradation in performance is predicted for devices with less than 5 mW coupled into the waveguide.
W/cm2) with time constants on the order of 100 h. Damage is not observed at lower power levels. Using a theoretical model based on the coupled wave equations and extrapolating the high power results, no significant degradation in performance is predicted for devices with less than 5 mW coupled into the waveguide.Keywords :
Optical directional couplers; Optical radiation effects; Optical refraction; Degradation; Directional couplers; Lithium niobate; Optical waveguides; Partial differential equations; Photorefractive effect; Photorefractive materials; Predictive models; Titanium; Waveguide theory;
fLanguage :
English
Journal_Title :
Quantum Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9197
Type :
jour
DOI :
10.1109/JQE.1986.1073068
Filename :
1073068
Link To Document :
