Slow light in silicon microring resonators

Abstract

This paper experimentally investigated slow light effect in cascaded silicon-on-insulator (SOI) microring resonators. Double channel and single channel side-coupled integrated spaced sequence of resonators (SCISSOR) devices were fabricated with electron beam lithography and dry etching technology. The delay performances of the SCISSOR devices were demonstrated using non-return-to-zero (NRZ) and return-to-zero (RZ) signals at different bit rates. Group delays and bandwidths of cascaded microrings are significantly enhanced compared with single microring.

Keywords

slow light / optical buffer / group delay / delay line / microring resonator

References

[1] Boyd R W.Applications of slow-light in telecommunications and optical switching. Presentation at Photonics West, 2006

[2] Parra E, Lowell J R. Toward applications of slow light technology. Optics and Photonics News, 2007, 18(11): 40-45

[3] Fisher M R, Chuang S L. Variable group delay and pulse reshaping of high bandwidth optical signals. IEEE Journal of Quantum Electronics, 2005, 41(6): 885-891

[4] Fleischhauer M, Lukin M. Quantum memory for photons: dark-state polaritons. Physical Review A, 2002, 65(2): 022314

[5] Harris S, Hau L. Nonlinear optics at low light levels. Physical Review Letters, 1999, 82(23): 4611-4614

[6] Jemison W T, Yost T, Herczfeld P R. Acoustooptically controlled true time delays: experimental results. IEEE Microwave and Guided Wave Letters, 1996, 6(8): 283

[7] Liu Z G, Zheng X P, Zhang H Y, Guo Y L, Zhou B K. X-band continuously variable true-time delay lines using air-guiding photonic bandgap fibers and a broadband light source. Optics Letters, 2006, 31(18): 2789-2791

[8] Zhang Y D, Wang N, Tian H, Wang H, Qiu W, Wang J F, Yuan P. A high sensitivity optical gyroscope based on slow light in coupled-resonator-induced transparency. Physics Letters A, 2008, 372(36): 5848-5852

[9] Wang N, Zhang Y D, Wang H, Tian H, Qiu W, Wang J F, Yuan P. Precise relative rotation sensing using slow light. Chinese Physics B, 2010, 19(1): 014216

[10] Heebner J E, Chak P, Pereira S, Sipe J E, Boyd R W. Distributed and localized feedback in microresonator sequences for linear and nonlinear optics. Journal of the Optical Society of America B, Optical Physics, 2004, 21(10): 1818-1832

[11] Heebner J E, Grover R, Ibrahim T. Optical microresonators: Theory, fabrication, and Applications. Springer Verlag, 2008

[12] Xia F N, Sekaric L, Vlasov Y. Ultracompact optical buffers on a silicon chip. Nature Photonics, 2007, 1(1): 65-71

Acknowledgements

This work was supported by the National Basic Research Program of China (Nos. 2006CB302803 and 2011CB301701), the National Natural Science Foundation of China (Grant No. 60877036), State Key Laboratory of Advanced Optical Communication Systems and Networks, China (No. 2008SH02) and the Knowledge Innovation Program of Institute of Semiconductors, Chinese Academy of Sciences (No. ISCAS2008T10).

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2014 Higher Education Press and Springer-Verlag Berlin Heidelberg