Title :
Characterization and performance evaluation of coupled multiwaveguide arrays
Author :
Kaplan, Arkady ; Ruschin, Shlomo
Author_Institution :
Fac. of Eng., Tel Aviv Univ., Israel
fDate :
10/1/1999 12:00:00 AM
Abstract :
A new and effective nonintrusive method for characterization of N coupled waveguides is presented. The method is able to furnish readily the coupling parameters of most significance, and furnishes in addition, a way of assessment of overall device quality and performance. The procedure is based on a semi-empirical implementation of coupled mode theory, by means of which different functions are defined for different input configurations. In a well-functioning device, all these function should attain a common single minimum, out of which the coupling coefficient and additional parameters of the device are deduced. Devices were fabricated on Z-cut LiNbO3 crystals by in-diffusion of titanium. The method was applied in order to measure the wavelength and polarization dependence of the coupling coefficient
Keywords :
coupled mode analysis; diffusion; lithium compounds; optical arrays; optical couplers; optical waveguide theory; optical waveguides; titanium; LiNbO3:Ti; Z-cut LiNbO3 crystals; common single minimum; coupled mode theory; coupled multiwaveguide arrays; coupled waveguides; coupling coefficient; coupling parameters; effective nonintrusive method; in-diffusion; input configurations; overall device quality; performance evaluation; polarization dependence; semi-empirical implementation; titanium; wavelength dependence; Crystals; Helium; Integrated optics; Optical coupling; Optical devices; Optical polarization; Optical waveguides; Titanium; Transmission line matrix methods; Wavelength measurement;
Journal_Title :
Lightwave Technology, Journal of
