Title :
Analysis of an MMI-Based Six-Port Circulator by Using 3-D Magneto-Optical Beam Propagation Method
Author :
Zhou, Haifeng ; Jiang, Xiaoqing ; Sun, Yiling ; Yang, Jianyi ; Wang, Minghua
Author_Institution :
Dept. of Inf. Sci. & Electron. Eng. (ISEE), Zhejiang Univ., Hangzhou, China
Abstract :
An MMI-based six-port circulator is analyzed by 3-D magneto-optical (MO) beam propagation method (BPM). Since opposite nonreciprocal 4pi/3-phase shifts are introduced into the two sided interferometric arms of 3 times 3 mirror-image MMI coupler, light travels through this device in a nonreciprocal fashion and obeys the sequential order. After using the Ce:YIG/SOI bonding waveguide to construct the proposed circulator, the 3-D MO BPM formula are validated for the first time to simulate nonreciprocal device with external magnetization perpendicular to the light propagation direction. Simulation shows that this device features in easy fabrication, good operation bandwidth, ability to reduce the port count number.
Keywords :
cerium; integrated optics; light interference; magneto-optical devices; optical circulators; optical communication equipment; optical fibre communication; optical fibre couplers; optical waveguides; silicon-on-insulator; yttrium compounds; 3 times 3 mirror-image MMI coupler; 3-D magneto-optical beam propagation method; MMI-based six-port circulator; YFe5O12:Ce; external magnetization; integrated optical devices; multimode interference coupler; nonreciprocal device; nonreciprocal phase shift; optical circulator; Integrated optical devices; beam propagation method (BPM); multimode interference (MMI); nonreciprocal phase shift; optical circulator;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2009.2025391
