CAJ | 학술논문

本文设计了一个基于圆柱型硅光子晶体自准直环形腔的1×2光下路分束器.该光下路分束器由三个分光镜和一个反射镜构成,其中窄光束依赖自准直效应进行传输.利用多光束干涉理论分析了光下路分束器中不同出口的理论透射谱,并且利用时域有限差分法对光下路分束器透射谱进行数值模拟计算,其结果与理论预测基本一致.当下路波长为1550 nm时,光下路分束器的自由光谱范围约为30 nm,几乎涵盖了整个光通信C波段.由于其小尺寸和全硅材料,本文设计的1×2光下路分束器有望应用于未来的集成光路中.
본문설계료일개기우원주형규광자정체자준직배형강적1×2광하로분속기.해광하로분속기유삼개분광경화일개반사경구성,기중착광속의뢰자준직효응진행전수.이용다광속간섭이론분석료광하로분속기중불동출구적이론투사보,병차이용시역유한차분법대광하로분속기투사보진행수치모의계산,기결과여이론예측기본일치.당하로파장위1550 nm시,광하로분속기적자유광보범위약위30 nm,궤호함개료정개광통신C파단.유우기소척촌화전규재료,본문설계적1×2광하로분속기유망응용우미래적집성광로중.
Based on a self-collimation ring resonator (SCRR) in a rod-type silicon photonic crystal,a 1×2 optical drop splitter (ODS) with selected splitting ratio is proposed.The 1 × 2 ODS consists of three beam splitters and one mirror,and light propagates in the ODS employing self-collimation effect.The theoretical transmission spectra at different drop ports of the ODS are analyzed with the multiple-beam interference theory,and they were investigated with the finitedifference time-domain (FDTD) simulation technique.The simulation results agree well with the theoretical prediction.For the drop wavelength 1 550 nm,the free spectral range of the ODS is about 30 nm,which almost covers the whole optical communication C-band window.Because of their small dimensions and whole-silicon material,the proposed ODSs hold great potentials for applications in photonic integrated circuits (PICs).