Chun-Hua Dong et al 2009 J. Phys. B: At. Mol. Opt. Phys. 42 215401 doi:10.1088/0953-4075/42/21/215401
Chun-Hua Dong1, Chang-Ling Zou1, Yun-Feng Xiao2, Jin-Ming Cui1, Zheng-Fu Han1,3 and Guang-Can Guo1
Show affiliationsWe theoretically and experimentally study the resonant transmission spectrum of light in a fibre taper coupled with a single silica microsphere cavity system, where two whispering-gallery modes (WGMs) are simultaneously excited. By changing the taper position (correspondingly, tuning the resonant frequencies of the two WGMs and modulating their coupling conditions with the fibre taper), a sharp electromagnetically-induced- transparency-like window can be observed in the transmission spectrum. This line shape origins from the taper-mediated interference between two co-existing WGMs in a single microsphere. This measurement result agrees well with the theoretical analysis.
42.55.Sa Microcavity and microdisk lasers
42.81.Qb Fiber waveguides, couplers, and arrays
Issue 21 (14 November 2009)
Received 20 July 2009, in final form 30 September 2009
Published 27 October 2009
Chun-Hua Dong et al 2009 J. Phys. B: At. Mol. Opt. Phys. 42 215401
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