1 December 2009 Folded Mach-Zehnder interferometer based on photonic crystal self-collimation effect
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Proceedings Volume 7630, Passive Components and Fiber-based Devices VI; 76300J (2009) https://doi.org/10.1117/12.851300
Event: Asia Communications and Photonics, 2009, Shanghai, Shanghai , China
Abstract
A Folded Mach-Zehnder interferometer (FMZI) in a two-dimensional photonic crystal is proposed. The FMZI consists of one splitter and several mirrors. Light propagates between them employing self-collimation effect. Its two interfering branches have different path lengths. The two complementary transmission spectra at two FMZI output ports are both in the shape of sinusoidal curves and have a uniform peak spacing in the frequency range from 0.255c/a to 0.270c/a. The peak spacing becomes smaller when the length difference between the two branches is increased. As self-collimation light beams can cross each other without coupling, this FMZI is much smaller than non-folded interference-type filters in photonic crystals. This FMZI may work as a wavelength division demultiplexer in high-density photonic integrated circuits.
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Xiyao Chen, Yufei Wang, Shengyu Chen, Xuemei Li, Nan Lin, Guimin Lin, Bo Ni, Jibo Bai, Junjun Li, Zexuan Qiang, "Folded Mach-Zehnder interferometer based on photonic crystal self-collimation effect", Proc. SPIE 7630, Passive Components and Fiber-based Devices VI, 76300J (1 December 2009); doi: 10.1117/12.851300; https://doi.org/10.1117/12.851300
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