A very compact Mach-Zehnder interferometer with left-handed material |
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| Authors: | Tang Ting-Ting Chen Fu-Shen Chen Kai-Xin Sun Bao |
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| Institution: | a College of Optoelectronic Technology, Chengdu University of Information Technology, Chengdu, 610225, Chinab Key Laboratory of Broadband Optical Fiber Transmission and Communication Networks in University of Electronic Science and Technology of China, Ministry of Education, Chengdu, 610054, China |
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| Abstract: | A very compact Mach-Zehnder interferometer (MZI) composed of two parallel straight waveguides with left-handed material (LHM) layers is proposed. The operating principle and characteristics of the MZI with electro-optic material (EOM) core are analyzed by using the supermode theory and coupled mode theory. The result shows that regardless of material loss, a very compact MZI of only 0.87 mm × 0.022 mm can be achieved by utilizing EOM with ultrahigh electro-optic coefficient, which means a new way to fulfill a very compact electro-optic modulator or optical switch. The absorption effect of the proposed MZI is also analyzed by perturbation method which is generated by lossy LHM layers. |
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