title: Tunable Fano-like resonance enabled by coupling a microsphere with a fiber Mach-Zehnder interferometer.
abstract: We demonstrate a simple scheme to achieve Fano-like resonance by coupling a microsphere resonator with a fiber Mach-Zehnder interferometer (FMZI), which includes a tapered microfiber in one pathway to evanescently couple with the microsphere. In this system, Fano-like asymmetric lineshapes could be converted into different types by introducing an extra phase shift in the FMZI. In addition, the sharpness of the Fano-like lineshapes could be controlled by changing the coupling strength between the microsphere and the microfiber. This Fano-like resonance with advantages of fiber integration, tunable lineshape, and ease of operation may have great potential in optical signal processing and sensing.
authors.forename: Chenyang
authors.initials: C
authors.lastname: Zhao
authors.forename: Xuetao
authors.initials: X
authors.lastname: Gan
authors.forename: Liang
authors.initials: L
authors.lastname: Fang
authors.forename: Lei
authors.initials: L
authors.lastname: Han
authors.forename: Kang
authors.initials: K
authors.lastname: Chang
authors.forename: Dongying
authors.initials: D
authors.lastname: Li
authors.forename: Jianlin
authors.initials: J
authors.lastname: Zhao