24 October 2014 Photonic drop splitters based on silicon photonic crystal cascaded self-collimation ring resonators
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Abstract
In this paper, the 1×5 optical splitters (OSs) based on 2D rod-type silicon photonic crystal embed cascaded self-collimation (SC) ring resonators (CSCRR) was proposed. The 1×5 OSs consist of eight beam splitters, which are formed by varying the radii of the rod. With self-collimation effect, we can manipulate the light’s propagation in the OSs. Here we consider TM modes. Utilizing multiple-beam interference theory, the theoretical transmission spectra at different outputs were analysed. These transmission spectra can help us to set the radii of eight slitters properly, for we can control the light coming out from five ports with the light-intensity ratio we need. Meanwhile these outputs’ transmission spectra were investigated by the finite-difference time-domain (FDTD) method. The simulative results have an agreement with the theoretical prediction. The 1×5 OSs will have practical applications in photonic integrated circuits.
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Yuan-Yuan Lin, Yuan-Yuan Lin, Xi-Yao Chen, Xi-Yao Chen, Jun-Zhen Jiang, Jun-Zhen Jiang, Ping Fu, Ping Fu, Biao Chen, Biao Chen, Li-Hui Yang, Li-Hui Yang, Jing-Ping Liu, Jing-Ping Liu, Bao-Cheng Lin, Bao-Cheng Lin, } "Photonic drop splitters based on silicon photonic crystal cascaded self-collimation ring resonators ", Proc. SPIE 9270, Optoelectronic Devices and Integration V, 92700Z (24 October 2014); doi: 10.1117/12.2071019; https://doi.org/10.1117/12.2071019
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