Modulational instability and soliton trains in a model for two-mode fiber ring lasers

Journal Article · Fri Nov 15 04:00:00 EST 2019 · Optical and Quantum Electronics

DOI:https://doi.org/10.1007/S11082-019-2078-3· OSTI ID:22950073

A model of orthogonally polarized two-field fiber ring laser with a linear gain is considered, with emphasis on the continuous-wave stability and the existence of soliton trains. The continuous-wave stability analysis is carried out within the framework of the modulational-instability approach, the variations of the gain spectrum with the modulation frequency and characteristic parameters of the model give rise to a rich variety of stability features including single-band and multiband stability regions. Seeking for pulse structures of the model, the two coupled cubic complex Ginzburg–Landau equations describing individual mode propagations are transformed into a set of coupled, first-order nonlinear ordinary-differential equations for the amplitudes and phases of the two modes. Numerical simulations of the last set of coupled equations indicate that in the anomalous dispersion regime, envelopes of the two fields are periodic trains of pulses the amplitudes of which are affected by the linear gain.

• OSTI ID: 22950073
• Journal Information: Optical and Quantum Electronics, Journal Name: Optical and Quantum Electronics Journal Issue: 11 Vol. 51; ISSN OQELDI; ISSN 0306-8919
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLITUDES
COMPUTERIZED SIMULATION
DIFFERENTIAL EQUATIONS
FIBERS
GAIN
NONLINEAR PROBLEMS
PERIODICITY
PULSES
RING LASERS
SPECTRA