Abstract

The coupling mechanism of a system in which two identical microresonators with slot are coupled through a tapered fiber is theoretically investigated and its transmission rate is numerically calculated. Physical parameters are evaluated for their impacts on the transmission spectra. Fano-like lineshape is observed under certain condition (γ_c > 2κ) and optimization of dominant parameters (κ₁/κ₀, kL, γ_c/κ₀ and Q₀) is applied to make the lineshape more steepened and sharper. This structure is promising for application in optical switch, sensing and research on Fano resonance.

Experimental observation of Fano-like resonance in a whispering-gallery-mode microresonator in aqueous environment

Yan-Lei Shang, Ming-Yong Ye, and Xiu-Min Lin
Photon. Res. 5(2) 119-123 (2017)

Enhanced Fano resonance in a non-adiabatic tapered fiber coupled with a microresonator

Kun Zhang, Yue Wang, and Yi-Hui Wu
Opt. Lett. 42(15) 2956-2959 (2017)

Transmission spectra of sausage-like microresonators

Ming-Yong Ye, Mei-Xia Shen, and Xiu-Min Lin
Opt. Express 23(20) 25846-25853 (2015)

Analysis of Fano lineshape in extraordinary optical transmission

S. C. Lee and S. R. J. Brueck
Opt. Lett. 47(8) 2020-2023 (2022)

Coupled Fano resonators

Xiaoguang Tu, Landobasa Y. Mario, and Ting Mei
Opt. Express 18(18) 18820-18831 (2010)