Modulation instability in erbium-doped fiber amplifiers

Author

Agrawal, Govind P.

Author_Institution

Inst. of Optics, Rochester Univ., NY, USA

Volume

4

Issue

6

fYear

1992

fDate

6/1/1992 12:00:00 AM

Firstpage

562

Lastpage

564

Abstract

The onset of modulation instability in erbium-doped fiber amplifiers (EDFAs) is studied through a stability analysis of the underlying nonlinear Schrodinger equation. The existence of gain in EDFAs lowers the threshold for modulation instability considerably compared with the case of undoped fibers. Modulation instability generates multiple pulses when a single pulse is amplified. It can also create multiple subpulses in mode-locked fiber lasers, a feature observed experimentally. Numerical simulations show that EDFAs can convert a continuous-wave optical signal into a train of high-repetition rate femtosecond pulses.<>

Keywords

Schrodinger equation; erbium; fibre lasers; laser theory; nonlinear optics; optical modulation; CW optical signals; Er doped fibre amplifiers; high-repetition rate femtosecond pulses; laser mode locking; mode-locked fiber lasers; modulation instability; multiple pulses; multiple subpulses; pulse amplification; single pulse; stability analysis; underlying nonlinear Schrodinger equation; Erbium-doped fiber amplifier; Erbium-doped fiber lasers; Laser mode locking; Numerical simulation; Optical pulse generation; Pulse amplifiers; Pulse modulation; Schrodinger equation; Stability analysis; Ultrafast optics;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.141968

Filename

141968