상세정보
학술지
Self-collimation-based Photonic Crystal Mach-Zehnder Demultiplexer
- 발행일
- 201609
- 출처
- Journal of Optics, v.18 no.9, pp.1-7
- ISSN
- 2040-8978
- 출판사
- Institute of Physics (IOP)
- 협약과제
- 15MI4200, 100기가급 초소형 광모듈 상용화 기술개발, 이종진
- 초록
- A photonic crystal Mach-Zehnder demultiplexer (PC-MZDmux) with four output ports based on the self-collimation phenomenon in a two-dimensional (2D) PC is proposed and numerically studied using finite-difference time-domain simulations. The PC-MZDmux is composed of three Mach-Zehnder interferometers (MZIs) and each MZI consists of two 50:50 beam splitters and two perfect mirrors. Employed as the design parameters to achieve the demultiplexing functionality are the radius of phase control rods (PCRs) in the mirrors and the distance between the beam spitter and the mirror in the three MZIs. From spatial electric field distributions and transmission spectra, it is demonstrated that an incident self-collimated beam with four different frequencies can be demultiplexed to four output ports of the PC-MZDmux with proper design parameters. 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.
- KSP 제안 키워드
- Collimated beam, Control rods, Different frequency, Efficient approach, Finite Difference Time Domain(FDTD), Light propagation, Mach-Zehnder(MZ), Mach-Zehnder Interferometer(MZI), Phase control, Transmission spectra, beam splitter