title: Investigation of evanescent coupling between tapered fiber and a multimode slab waveguide.
abstract: A tapered fiber-slab waveguide coupler (TFSC) is proposed in this paper. Both the numerical analysis based on the beam propagation method and experiments are used for investigating the dependencies of TFSC transmission features on their geometric parameters. From the simulations and experimental results, the rules for fabricating a TFSC with low transmission loss and sharp resonant spectra by optimizing the configuration parameters are presented. The conclusions derived from our work may provide helpful references for optimally designing and fabricating TFSC-based devices, such as sensors, wavelength filters, and intensity modulators.
authors.affiliation: State Key Laboratory of Electrical Insulation and Power Equipment, Xian Jiaotong University, Xi'an, China.
authors.forename: Shaofei
authors.initials: S
authors.lastname: Dong
authors.forename: Hui
authors.initials: H
authors.lastname: Ding
authors.forename: Yiying
authors.initials: Y
authors.lastname: Liu
authors.forename: Xiaofeng
authors.initials: X
authors.lastname: Qi