Title :
Dependence of the output phase difference on the asymmetry of 3-dB directional couplers
Author :
Mizumoto, Tetsuya ; Naito, Yoshiyuki
Author_Institution :
Dept. of Phys. Electron., Tokyo Inst. of Technol., Miguro, Japan
fDate :
10/1/1990 12:00:00 AM
Abstract :
The coupling characteristics of parallel coupled waveguides are examined, with emphasis on the dependence of the output phase difference, by means of a simplified model. The phase relationship among the output waves for a 3-dB coupler is discussed. It is concluded that a magic-T can be realized by employing asymmetric coupled waveguides with a specific degree of asymmetry
Keywords :
directional couplers; optical couplers; optical waveguide theory; asymmetric coupled waveguides; coupling characteristics; directional couplers; magic-T; output phase difference; output waves; parallel coupled waveguides; Analytical models; Directional couplers; Electromagnetic scattering; Electromagnetic waveguides; Optical coupling; Optical filters; Optical modulation; Optical waveguides; Refractive index; Slabs;
Journal_Title :
Lightwave Technology, Journal of
