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학술지 Self-Collimation-Based Photonic Crystal Mach-Zehnder Add-Drop Filters
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저자
이성구, 박종문, 기철식, 이종진
발행일
201512
출처
Journal of Physics D : Applied Physics, v.49 no.5, pp.1-7
ISSN
0022-3727
출판사
Institute of Physics (IOP)
DOI
https://dx.doi.org/10.1088/0022-3727/49/5/055101
협약과제
15MI4200, 100기가급 초소형 광모듈 상용화 기술개발, 이종진
초록
Photonic crystal Mach-Zehnder add-drop filters (PC-MZADFs) based on the self-collimation phenomenon in a two-dimensional (2D) PC are proposed and numerically studied using finite-difference time-domain (FDTD) simulations. Each PC-MZADF is composed of a symmetric Mach-Zehnder interferometer (MZI) with an identical filter in each of its two different optical paths. Zizag-box resonators (ZBRs) and Fano resonators (FRs) are employed as the optical filters in rod-type and hole-type PCs, respectively. It is shown that self-collimated beams with the ZBR and FR resonant frequencies can be dropped or added using multiple-beam interference. We also show that the resonant frequencies of the resonators can be adjusted by varying the radii of their rods or holes. Our results indicate that this device design may constitute an efficient approach to light propagation manipulation and increase the application range of self-collimated beams.
키워드
add-drop filter, photonic crystal, self-collimation phenomenon
KSP 제안 키워드
Add/drop filter, Beam interference, Collimated beam, Efficient approach, Finite Difference Time Domain(FDTD), Light propagation, Mach-Zehnder(MZ), Mach-Zehnder Interferometer(MZI), Optical filters, Resonant frequency(Fr), device design