Reflection minimization at two-dimensional photonic crystal interfaces.
We propose a method to design antireflection structures to minimize the reflection of light beams at the interfaces between a two-dimensional photonic crystal and a homogeneous dielectric. The design parameters of the optimal structure to give zero reflection can be obtained from the one-dimensional antireflection coating theory and the finite-difference time-domain simulations. We examine the performance of a Mach-Zehnder interferometer utilizing the self-collimated beams in two-dimensional photonic crystals with and without the optimal antireflection structure introduced. It is shown that the optimal antireflection structure significantly improves the performance of the device.
Department of Physics, KAIST, Daejeon 305-701, Korea.
Sun-Goo
SG
Lee
Jin-Sun
JS
Choi
Jae-Eun
JE
Kim
Hae-Yong
HY
Park
Chul-Sik
CS
Kee
D016477:Artifacts; D017076:Computer-Aided Design; D004867:Equipment Design / Q000379:methods*; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation* / Q000379:methods*; D007909:Lenses