Title :
Scalar off-resonant modulation instability in rare-earth-doped fiber amplifiers
Author_Institution :
Dept. of Quantum Electron., Sofia Univ., Bulgaria
Abstract :
Presents an analytical model which describes the dynamics of the modulation instability in a nonlinear, dispersive, homogeneously broadened and nonsaturable fiber amplifiers. The general case of arbitrary detuning between the laser frequency and the resonance frequency and arbitrary bandwidth of the amplifying transition is treated. The model accounts both for the gain dispersion and for the gain-induced, near resonant refractive index dispersion, Simple closed form expressions for the combined gain coefficients of the Stokes and anti-Stokes frequencies are obtained.
Keywords :
erbium; fibre lasers; laser stability; laser theory; nonlinear optics; optical fibre dispersion; optical modulation; rare earth metals; refractive index; spectral line broadening; EDFA; Er doped fiber amplifier; Stokes frequency; amplifying transition; analytical model; antiStokes frequency; bandwidth; combined gain coefficients; detuning; gain dispersion; gain-induced near resonant refractive index dispersion; laser frequency; modulation instability dynamics; nonlinear dispersive homogeneously broadened fiber amplifier; nonsaturable fiber amplifier; rare-earth-doped fiber amplifiers; resonance frequency; scalar off-resonant modulation instability; simple closed form expressions; Bandwidth; Erbium-doped fiber amplifier; Optical amplifiers; Optical fiber amplifiers; Optical fiber dispersion; Optical fibers; Optical modulation; Refractive index; Resonance; Resonant frequency;
Journal_Title :
Photonics Technology Letters, IEEE
