Asymmetric Mach-Zehnder filter based on self-collimation phenomenon in two-dimensional photonic crystals.
A two-dimensional photonic crystal asymmetric Mach-Zehnder filter (AMZF) based on the self-collimation effect is studied by numerical simulations and experimental measurements in microwave region. A self-collimated beam is effectively controlled by employing line-defect beam splitters and mirrors. The measured transmission spectra at the two output ports of the AMZF sinusoidally oscillate with the phase difference of pi in the self-collimation frequency range. Position of the transmission peaks and dips can be controlled by varying the size of the defect rod of perfect mirrors, and therefore this AMZF can be used as a tunable power filter.
Kim
Teun-Teun
TT
Department of Physics, KAIST, Daejon, Korea.
Lee
Sun-Goo
SG
Park
Hae Yong
HY
Kim
Jae-Eun
JE
Kee
Chul-Sik
CS
D004867:Equipment Design; D019544:Equipment Failure Analysis; D007909:Lenses; D008027:Light; D008872:Microwaves; D017785:Photons; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods*; D012542:Scattering, Radiation