Abstract
We theoretically investigate the phenomena of optically induced transparency for a weak probe field and tunable asymmetric Fano line shape in coupled micro-cavities. One of the cavities is passive, consists of optical Kerr medium and coupled via photon tunnelling to an active cavity. The forward transmission and backward reflection profile of the output fields are analyzed for both passive-passive and passive-active cavity system by varying different system parameters. The transmission spectra show tunable transparency window and sharp asymmetric Fano line shape structure. The sharpness of line shape profile is controlled via the gain-to-loss ratio, photon tunnelling strength, Kerr nonlinear strength and input power. The findings in this study have the potential to be used as a highly sensitive sensor and also useful for telecom system.
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Mukherjee, K., Jana, P.C. Optically induced transparency in coupled micro-cavities: tunable Fano resonance. Eur. Phys. J. D 73, 264 (2019). https://doi.org/10.1140/epjd/e2019-100356-4
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DOI: https://doi.org/10.1140/epjd/e2019-100356-4