Mach--Zehnder Interferometer Based on Coupled Dielectric Pillars
GAO Ding-Shan1, HAO Ran1, ZHOU Zhi-Ping1,2
1Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 4300742School of Electrical and Computer Engineering, Georgia Institute of Technology, Georgia 30332, USA
Mach--Zehnder Interferometer Based on Coupled Dielectric Pillars
GAO Ding-Shan1;HAO Ran1;ZHOU Zhi-Ping1,2
1Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 4300742School of Electrical and Computer Engineering, Georgia Institute of Technology, Georgia 30332, USA
摘要We propose a Mach--Zehnder interferometer (MZI) based on coupled dielectric pillars. It is composed of single-row pillar coupled waveguide modulating arms and three-row pillar waveguide 3dB couplers. The slow light property and transmission loss of the single-row pillar modulating arm are optimized by the plane wave expansion method. A short 3dB coupler is designed based on the modes transformation in three-row pillar waveguide. Finite difference time domain simulations prove the validity of this MZI and show that it has low insertion loss of <1.1dB and high extinction ratio of >12dB.
Abstract：We propose a Mach--Zehnder interferometer (MZI) based on coupled dielectric pillars. It is composed of single-row pillar coupled waveguide modulating arms and three-row pillar waveguide 3dB couplers. The slow light property and transmission loss of the single-row pillar modulating arm are optimized by the plane wave expansion method. A short 3dB coupler is designed based on the modes transformation in three-row pillar waveguide. Finite difference time domain simulations prove the validity of this MZI and show that it has low insertion loss of <1.1dB and high extinction ratio of >12dB.
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2007, Vol. 24 
