title: Simple system for optical short-pulse generation in both active mode-locking and self-seeding schemes.
abstract: A simple system that simultaneously supports active mode-locking and self-seeding schemes for wavelength-tunable optical short-pulse generation is proposed. The system consists of a gain-switched Fabry-Perot laser diode, an erbium-doped fiber amplifier, a tunable optical filter, and two circulators. The mode-locked optical pulses exhibit good stability, a high side-mode suppression ratio of more than 31 dB over a wide wavelength tuning range of 42 nm, and a pulse width of around 35 ps at a repetition frequency of approximately 2.8 GHz.
authors.affiliation: Hong Kong Polytechnic University, Department of Electrical Engineering, Hung Hom, Kowloon, China.
authors.forename: Xiaohui
authors.initials: X
authors.lastname: Fang
authors.forename: D N
authors.initials: DN
authors.lastname: Wang
authors.forename: W
authors.initials: W
authors.lastname: Jin
authors.forename: H L
authors.initials: HL
authors.lastname: Ho
authors.forename: H L
authors.initials: HL
authors.lastname: Liu
authors.forename: Pak L
authors.initials: PL
authors.lastname: Chu