| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Properties of metal-insulator-metal waveguide loop reflector |
| Hu Long(龙虎)1,2, Xuan-Ke Zeng(曾选科)1, Yi Cai(蔡懿)1, Xiao-Wei Lu(陆小微)1, Hong-Yi Chen(陈红艺)1, Shi-Xiang Xu(徐世祥)1, Jing-Zhen Li(李景镇)1 |
1 Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060, China;
2 Key Laboratory of Optoelectronic Devices and System of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China |
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Abstract A new type and easy-to-fabricate metal-insulator-metal (MIM) waveguide reflector based on Sagnac loop is designed and investigated. The transfer matrix theoretical model for the transmission of electric fields in the reflector is established, and the properties of the reflector are studied and analyzed. The simulation results indicate that the reflectivity strongly depends on the coupling splitting ratio determined by the coupling length. Accordingly, different reflectivities can be realized by varying the coupling length. For an optimum coupling length of 750 nm, the 3-dB reflection bandwidth of the MIM waveguide reflector is as wide as 1.5 μm at a wavelength of 1550 nm, and the peak reflectivity and isolation are 78% and 23 dB, respectively.
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Received: 08 April 2019
Revised: 02 July 2019
Accepted manuscript online:
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PACS:
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42.82.-m
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(Integrated optics)
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42.82.Et
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(Waveguides, couplers, and arrays)
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42.79.Fm
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(Reflectors, beam splitters, and deflectors)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61827815 and 61775142). |
Corresponding Authors:
Jing-Zhen Li
E-mail: lijz@szu.edu.cn
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Cite this article:
Hu Long(龙虎), Xuan-Ke Zeng(曾选科), Yi Cai(蔡懿), Xiao-Wei Lu(陆小微), Hong-Yi Chen(陈红艺), Shi-Xiang Xu(徐世祥), Jing-Zhen Li(李景镇) Properties of metal-insulator-metal waveguide loop reflector 2019 Chin. Phys. B 28 094215
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