title: Fabricating fiber Bragg gratings with two phase masks based on reconstruction-equivalent-chirp technique.
abstract: Based on reconstruction-equivalent-chirp (REC) technique, a novel solution for fabricating low-cost long fiber Bragg gratings (FBGs) with desired properties is proposed and initially studied. A proof-of-concept experiment is demonstrated with two conventional uniform phase masks and a submicron-precision translation stage, successfully. It is shown that the original phase shift (OPS) caused by phase mismatch of the two phase masks can be compensated by the equivalent phase shift (EPS) at the ±1st channels of sampled FBGs, separately. Furthermore, as an example, a π phase-shifted FBG of about 90 mm is fabricated by using these two 50mm-long uniform phase masks based on the presented method.
authors.affiliation: National Laboratory of Microstructures and College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China.
authors.forename: Liang
authors.initials: L
authors.lastname: Gao
authors.forename: Xiangfei
authors.initials: X
authors.lastname: Chen
authors.forename: Jintian
authors.initials: J
authors.lastname: Xiong
authors.forename: Shengchun
authors.initials: S
authors.lastname: Liu
authors.forename: Tao
authors.initials: T
authors.lastname: Pu
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D008567:Membranes, Artificial; D012031:Refractometry / Q000295:instrumentation*
chemical_list: D008567:Membranes, Artificial