Short-pulse gain-switched Raman fiber laser based on conventional silica fibers

Pulse-Profile-Maintaining Characteristics of Gain-Switched Nanosecond Raman Fiber Laser and Amplifier

“…In 2021, C. Quan et al reported a gain-switched RFL with several nanosecond pulse generation by using a 1550 nm PRF tunable pulsed laser as the pump source and 1 km single-mode fiber (SMF) as the Raman gain medium. The RFL pulse duration increased from 4.41 ns to 7.47 ns with the increase of pump power [27]. However, these reports did not investigate the pulse-profile relation between the pump and Raman-converted pulses.…”