title: Inverse-Gaussian apodized fiber Bragg grating for dual-wavelength lasing.
abstract: A fiber Bragg grating (FBG) with an inverse-Gaussian apodization function is proposed and fabricated. It is shown that such a FBG possesses dual-wavelength narrow transmission peaks and the wavelength spacing between the two peaks is easily controllable during fabrication. Incorporating such a FBG filter into a fiber laser with a linear cavity, we obtain stable dual-wavelength emission with 0.146 nm wavelength spacing. This arrangement provides a simple and low cost way of achieving dual-wavelength fiber laser operation.
authors.affiliation: Photonics Research Centre, School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
authors.forename: Bo
authors.initials: B
authors.lastname: Lin
authors.forename: Han
authors.initials: H
authors.lastname: Zhang
authors.forename: Swee Chuan
authors.initials: SC
authors.lastname: Tjin
authors.forename: Dingyuan
authors.initials: D
authors.lastname: Tang
authors.forename: Jianzhong
authors.initials: J
authors.lastname: Hao
authors.forename: Chia Meng
authors.initials: CM
authors.lastname: Tay
authors.forename: Sheng
authors.initials: S
authors.lastname: Liang