title: Picosecond flat-top pulse generation using dual-mode fiber Mach-Zehnder interferometers.
abstract: We report on an optical fiber Mach-Zehnder interferometer made by offset splicing a dual-mode fiber with two single-mode fibers. The extinction ratio can be tuned from less than 1 dB to greater than 28 dB by rotating the dual-mode fiber along its axial direction. The interferometer is utilized as a pulse shaper to convert a 2.5 ps Gaussian pulse to a 5.2 ps flat-top pulse.
authors.affiliation: Department of Electrical and Computer Engineering, McGill University, Montreal, Quebec H3A 2A7, Canada. tianzhaobing@gmail.com
authors.forename: Zhaobing
authors.initials: Z
authors.lastname: Tian
authors.forename: David V
authors.initials: DV
authors.lastname: Plant