title: Ultranarrow dual-transmission-band fiber Bragg grating filter and its application in a dual-wavelength single-longitudinal-mode fiber ring laser.
abstract: A fiber Bragg grating filter with ultranarrow dual-transmission bands implemented using the equivalent phase shift technique is demonstrated. A fiber ring laser that incorporates a dual-transmission-band fiber Bragg grating filter in the ring cavity is implemented. Dual-wavelength single-longitudinal-mode lasing with a wavelength spacing as small as 0.147 nm at room temperature is experimentally demonstrated.
authors.affiliation: Microwave Photonics Research Laboratory, School of Information Technology and Engineering, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada.
authors.forename: Xiangfei
authors.initials: X
authors.lastname: Chen
authors.forename: Jianping
authors.initials: J
authors.lastname: Yao
authors.forename: Zhichao
authors.initials: Z
authors.lastname: Deng