Transmission and group delay in a double microring resonator reflector |
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Authors: | Ying Lu Congjing Hao Bing Lu Xiaohui Huang Baoqun Wu Jianquan Yao |
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Institution: | 1. School of Information and Communication Engineering, North University of China, Taiyuan 030051,China;2. Key Laboratory of Material Science and Technology for High Power Lasers, Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800, China |
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Abstract: | We present a microring resonator scheme for an optical reflector in which two microrings are coupled to two bus waveguides, to produce reflected signal at the input port. In this system, a single narrow reflected peak with maximum reflectivity near 100% in a wide spectral range due to the Vernier effect are achieved. We also investigate versatile reflection, transmission spectra and group delay characteristic. These effects are useful for applications in ring resonator-based photonic devices such as all-optical single wavelength tunable laser end mirrors, reflective wavelength switching, reflective filter and dual-wavelength delay line. |
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