• Frontiers of Optoelectronics
  • Vol. 9, Issue 1, 106 (2016)
Chuan WANG, Xiaoying LIU*, Peng ZHOU, Peng LI, and Jia DU
Author Affiliations
  • School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
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    In the optical packet switching network, optical buffer is an important device. Microring resonator optical buffers provide good delay performance and flexibility in design. By cascading multiple microring resonators, higher delay-bandwidth product is obtained, but the requirements of high integration and low dispersion are hard to satisfy simultaneously. Double-slot waveguide was proposed to construct highly integrated racetrack microring resonators in this study. Based on dispersion analysis of the thickness of each layer of a waveguide, the structure of waveguide was optimized to reach flat and low dispersion. Average dispersions of straight and 3 μm bend waveguides were 5.1 ps/(nm?km) and 4.4 ps/(nm?km), respectively. Besides, the additional loss from coupling was greatly reduced when applying proper relative displacement between straight and bend waveguides. Theoretical and design basis provided in this paper will help to develop multi-microring optical buffers in the future.
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    Chuan WANG, Xiaoying LIU, Peng ZHOU, Peng LI, Jia DU. Dispersion of double-slot microring resonators in optical buffer[J]. Frontiers of Optoelectronics, 2016, 9(1): 106
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    Received: Jul. 16, 2014
    Accepted: Sep. 22, 2014
    Posted: Jan. 1, 2016
    Published Online: Oct. 21, 2016
    The Author Email: LIU Xiaoying (liuxy@mail.hust.edu.cn)