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Proceedings Paper

Concentric silicon micro-ring resonators with enhanced transmission notch depth
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Paper 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.

Paper Details

Date Published: 18 November 2008
PDF: 8 pages
Proc. SPIE 7135, Optoelectronic Materials and Devices III, 71350Q (18 November 2008); doi: 10.1117/12.804230
Show Author Affiliations
Xiaohui Li, Shanghai Jiaotong Univ (China)
Ziyang Zhang, Royal Institute of Technology (Sweden)
Qiang Li, Royal Institute of Technology (Sweden)
Min Qiu, Royal Institute of Technology (Sweden)
Yikai Su, Shanghai Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 7135:
Optoelectronic Materials and Devices III
Yi Luo; Jens Buus; Fumio Koyama; Yu-Hwa Lo, Editor(s)

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