Title :
Analysis of the coupling characteristics of a tapered three-guide coupled system
Author :
Cai, Yuanmin ; Mizumoto, Tetsuya ; Naito, Yoshiyuki
Author_Institution :
Dept. of Phys. Electron., Tokyo Inst. of Technol., Japan
fDate :
10/1/1990 12:00:00 AM
Abstract :
Optical coupling characteristics of a three-guide coupled system are discussed. Application of a taper-formed waveguide in the system is proposed. A theoretical analysis of the tapered waveguide system is presented by applying a modified coupled-mode theory, with the tapered guide being approximated by successive stepped small guide segments. Based on numerical examinations, particular coupling characteristics of the tapered guide system are demonstrated. An application of the tapered three-guide coupled system in a type of optical isolator is proposed. The main working principles of the isolator are presented
Keywords :
optical couplers; optical isolators; optical waveguide theory; coupling characteristics; modified coupled-mode theory; optical isolator; power-dividing ratios; successive stepped small guide segments; taper-formed waveguide; tapered three-guide coupled system; Isolators; Optical arrays; Optical coupling; Optical propagation; Optical refraction; Optical sensors; Optical switches; Optical waveguides; Phased arrays; Slabs;
Journal_Title :
Lightwave Technology, Journal of
