Polarization beam splitter based on photonic crystal self-collimation Mach-Zehnder interferometer |
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| Authors: | Xiyao Chen Zexuan Qiang Yufei Wang Yishen Qiu |
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| Institution: | a Department of Physics and Electronic Information Engineering, Minjiang University, Fuzhou 350108, Chinab School of Physics and Optoelectronics Technology, Fujian Normal University, Fuzhou, 350007, Chinac Department of Electrical Engineering, NanoFAB Center, University of Texas at Arlington, Texas 76019, USA |
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| Abstract: | A polarization beam splitter based on a self-collimation Mach-Zehnder interferometer (SMZI) in a hole-type silicon photonic crystal was proposed and numerically demonstrated. Utilizing polarization dependence of the transmission spectra of the SMZI and polarization peak matching (PPM) method, the SMZI can work as a polarization beam splitter (PBS) by selecting appropriate path length difference in the structure. Because of its intrinsic operating principle, the PBS possesses high polarization extinction ratios (PERs). As its dimensions are only several operating wavelengths, the PBS may have practical applications in photonic integrated circuits. |
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| Keywords: | Photonic crystal Self-collimation Polarization beam splitter Mach-Zehnder interferometer |
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