Title :
Improved coupled-mode theory for anisotropic waveguide modulators
Author :
Feng, Tian ; Wu, Y.-Z. ; Ye, P.-D.
Author_Institution :
Opt. Commun. Lab., Beijing Univ. of Posts & Telecommun., China
fDate :
3/1/1988 12:00:00 AM
Abstract :
An improved coupled-mode theory for the propagation of modulated light waves in anisotropic dielectric waveguides is presented. Starting from Maxwell´s equations, a partial differential equation is derived to describe mode-coupling between two normal modes which may propagate in anisotropic waveguide systems under modulation. The theory is applied to the analysis of typical waveguide modulators; examples for LiNbO3 phase modulator, Mach-Zehnder, and directional coupler modulator are presented. The theory is applicable to both bulk and waveguide modulators/switches from DC to the high-frequency band. The only limitation is that the modulating wave has to propagate collinearly to the light waves
Keywords :
optical modulation; optical waveguides; partial differential equations; LiNbO3 phase modulator; Mach-Zehnder modulator; Maxwell´s equations; anisotropic dielectric waveguides; anisotropic waveguide modulators; directional coupler modulator; improved coupled-mode theory; light wave propagation; mode-coupling; partial differential equation; waveguide modulator-switches; Anisotropic magnetoresistance; Dielectrics; Maxwell equations; Optical coupling; Optical modulation; Optical propagation; Partial differential equations; Phase modulation; Waveguide components; Waveguide theory;
Journal_Title :
Quantum Electronics, IEEE Journal of
