title: Detailed study of four-wave mixing in Raman DFB fiber lasers.
abstract: We both experimentally and numerically studied the ultra-compact wavelength conversion by using the four-wave mixing (FWM) process in Raman distributed-feedback (R-DFB) fiber lasers. The R-DFB fiber laser is formed in a 30 cm-long commercially available Ge/Si standard optical fiber. The internal generated R-DFB signal acts as the pump wave for the FWM process and is in the normal dispersion range of the fiber. Utilizing a tunable laser source as a probe wave, FWM frequency conversion up to ~40 THz has been demonstrated with conversion efficiency > -40 dB. The principle of such a wide bandwidth and high conversion efficiency in such a short R-DFB cavity has been theoretically analyzed. The simulation results match well with the experimental data.
authors.forename: Jindan
authors.initials: J
authors.lastname: Shi
authors.forename: Peter
authors.initials: P
authors.lastname: Horak
authors.forename: Shaif-Ul
authors.initials: SU
authors.lastname: Alam
authors.forename: Morten
authors.initials: M
authors.lastname: Ibsen
mesh_terms: D004867:Equipment Design; D007834:Lasers; D055100:Optical Fibers; D013059:Spectrum Analysis, Raman / Q000295:instrumentation*