Related Experiment Video
Updated: Jun 10, 2026

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
Published on: February 28, 2016
On the theory of the modulation instability in optical fiber amplifiers
Sergei K Turitsyn1, Alexander M Rubenchik, Michail P Fedoruk
1Photonics Research Group, Aston University, Birmingham, B4 7ET, UK. s.k.turitsyn@aston.ac.uk
Abstract:
The modulation instability (MI) in optical fiber amplifiers and lasers with anomalous dispersion leads to cw radiation breakup. This can be both a detrimental effect limiting the performance of amplifiers and an underlying physical mechanism in the operation of MI-based devices. Here we revisit the analytical theory of MI in fiber optical amplifiers. The results of the exact theory are compared with the previously used adiabatic approximation model, and the range of applicability of the latter is determined.
Related Concept Videos
Small-Signal Analysis of MOSFET Amplifiers
MOSFET Amplifiers
Propagation of Waves
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
Cascaded Op Amps
In a cascaded system, each op-amp is referred to as a stage. The output of one stage drives the input of the subsequent stage. As the input signal passes through...
Propagation Speed of Electromagnetic Waves
Small-Signal Analysis of BJT Amplifiers
