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.
Lee
Sun-Goo
SG
Department of Physics, KAIST, Daejeon 305-701, Korea.
Choi
Jin-Sun
JS
Kim
Jae-Eun
JE
Park
Hae-Yong
HY
Kee
Chul-Sik
CS
D016477:Artifacts; D017076:Computer-Aided Design; D004867:Equipment Design / Q000379:methods*; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation* / Q000379:methods*; D007909:Lenses