Laser & Optoelectronics Progress, Volume. 48, Issue 9, 92301(2011)
Signal Flow Graph for Analyzing Characteristics of Multiple-Ring Microring Resonator Filters
Microring resonator has become a hotspot due to its functionality, compactness, and dense integration. The microring resonators provide passband characteristics of steeper roll-off, flatter top and greater stopband rejection than single ring resonators. Both the transfer functions of series-coupled and parallel-coupled multi-ring microring resonator filters are derived by the signal flow graph method. For the series-coupled structure, the filtering response of filter is determined by the coupling coefficients between rings and the optical loss. For the parallel-coupled structure, the good shape of spectral response is achieved by optimizing the ring distance.
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Yang Pengbo, Liang Jinlong, Qu Yang, Chen Chen, Wang Jiawei, Gao Shaohong. Signal Flow Graph for Analyzing Characteristics of Multiple-Ring Microring Resonator Filters[J]. Laser & Optoelectronics Progress, 2011, 48(9): 92301
Category: Optical Devices
Received: Mar. 24, 2011
Accepted: --
Published Online: Aug. 1, 2011
The Author Email: Pengbo Yang (wys3941f@126.com)