[21a-S321-1~12] 3.14 Optical control devices and optical fibers

[21a-S321-7] Comparison of Coupled Mode Theory and Intermodal Interference in Optical Waveguide Directional Couplers

〇Gen-ichi Hatakoshi¹, Kenichi Iga² (1.Waseda Univ., 2.Tokyo Inst. Tech.)

Keywords:directional coupler,coupled mode theory,intermodal interference

Coupled mode theory and intermodal interference in optical waveguide directional couplers have been investigated, and numerical results for coupling length and mode coefficients have been compared. Very interesting result is that those parameters coinside with each other, even though two models are based on different operation mechanbisms.