Concentric silicon micro-ring resonators with enhanced transmission notch depth

Xiaohui Li; Ziyang Zhang; Qiang Li; Min Qiu; Yikai Su

doi:10.1117/12.804230

18 November 2008 Concentric silicon micro-ring resonators with enhanced transmission notch depth

Xiaohui Li, Ziyang Zhang, Qiang Li, Min Qiu, Yikai Su

Proceedings Volume 7135, Optoelectronic Materials and Devices III; 71350Q (2008) https://doi.org/10.1117/12.804230
Event: Asia-Pacific Optical Communications, 2008, Hangzhou, China

Abstract

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.

Citation Download Citation

Xiaohui Li, Ziyang Zhang, Qiang Li, Min Qiu, and Yikai Su "Concentric silicon micro-ring resonators with enhanced transmission notch depth", Proc. SPIE 7135, Optoelectronic Materials and Devices III, 71350Q (18 November 2008); https://doi.org/10.1117/12.804230

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