Optimization of a polymer four-port microring optical router with three channel wavelengths
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Abstract:
Optimization and simulation are performed for a polymer four-port microring optical router with three channel wavelengths, which contains four-group basic routing elements with two different ring radii. In terms of microring resonance theory, coupled mode theory and transfer matrix method, expressions of output power of basic routing element and optical router are derived. In order to realize single-mode propagation, low optical transmission loss and phase match between microring waveguide and channel waveguide, the device parameters are optimized. With the selected three channel wavelengths of 1550 nm, 1552 nm and 1554 nm, characteristics are calculated and analyzed, including output spectrum, insertion loss and crosstalk. Simulation results indicate that the device has 12 possible I/O routing paths, the insertion losses of three channel wavelengths along their routing paths are within the range of 0.02–0.61 dB, the maximum crosstalk between the on-port along each routing path and other off-ports is less than ?39 dB, and the device footprint size is ～0.13 mm2. Based on the proposed structure, through proper selection on ring radius, the routing structure can also be used for other channel wavelengths. Therefore, the designed structure shows wide applications in integrated optical networks-on-chip (NoC).
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Project Supported:
This work has been supported by the National Natural Science Foundation of China （Nos.61107021, 61177027 and 61077041）, the Ministry of Edu- cation of China （Nos.20110061120052 and 20120061130008）, the China Postdoctoral Science Foundation Funded Project （Nos.20110491299 and 2012T50297）, the Science and Technology Department of Jilin Province of China （No.20130522161JH）, and the Special Funds of Basic Science and Technology of Jilin University （Nos.201103076 and 200905005）.
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