Title :
Folded Mach-Zehnder interferometer based on photonic crystal self-collimation effect
Author :
Chen, Xiyao ; Yufei Wang ; Shengyu Chen ; Xuemei Li ; Nan Lin ; Guimin Lin ; Bo Ni ; Jibo Bai ; Junjun Li ; Zexuan Qiang
Author_Institution :
Department of Physics and Electronic Information Engineering, Minjiang University, Fuzhou 350108, 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.
Keywords :
Coupling circuits; Filters; Frequency; Interference; Mirrors; Optical coupling; Optical propagation; Photonic crystals; Photonic integrated circuits; Shape; Mach-Zehnder interferometer; Photonic crystal; photonic integrated circuit; self-collimation;
Conference_Titel :
Communications and Photonics Conference and Exhibition (ACP), 2009 Asia
Conference_Location :
Shanghai, China
Print_ISBN :
978-1-55752-877-3
Electronic_ISBN :
978-1-55752-877-3
