Concentric silicon micro-ring resonators with enhanced transmission notch depth
In this work, we have analyzed, fabricated and demonstrated concentric micro-ring resonators in silicon-on-insulator (SOI) structure for enhanced transmission notches. The operation principles of the concentric ring resonators are studied by time-domain coupled-mode theory. Directional coupling between concentric rings offers another freedom in designing deep notch optical filters and ultra-sensitive biosensors. The finite-difference-time-domain (FDTD) simulations have shown the improvement of the notch depth, evenly distributed mode field and the effect of the resonance shift. The device is demonstrated in silicon-on-insulator structure. Transmission notch depth improvement of ~ 15dB is demonstrated for the 21-20.02-μm-radius double-ring structure comparing with the single 21-μm-radius ring.
concentric micro-ring resonators silicon-on-insulator
Xiaohui Li Ziyang Zhang Qiang Li Min Qiu Yikai Su
State Key Lab of Advanced Optical Communication Systems and Networks,Department of Electronic Engine Department of Microelectronics and Applied Physics,Royal Institute of Technology,164 40 Kista,Sweden State Key Lab of Advanced Optical Communication Systems and Networks,Department of Electronic Engine
国际会议
2008亚太光通信会议(Asia-Pacific Optical Communications 2008)
杭州
英文
2008-10-26（万方平台首次上网日期，不代表论文的发表时间）