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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 |
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| Cite this article: |
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GAO Ding-Shan, HAO Ran, ZHOU Zhi-Ping 2007 Chin. Phys. Lett. 24 3172-3174 |
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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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| Keywords:
42.70.Qs
42.82.Et
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Received: 13 August 2007
Published: 23 October 2007
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| PACS: |
42.70.Qs
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(Photonic bandgap materials)
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42.82.Et
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(Waveguides, couplers, and arrays)
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