Related Experiment Video
Updated: Feb 4, 2026

Design and Fabrication of an Optical Fiber Made of Water
Published on: November 8, 2018
Theory of thermo-optic instabilities in dual-core fiber amplifiers
Abstract:
A coupled-mode theory for nonlinear mode coupling by the thermo-optic effect, originally developed for single-core fiber amplifiers, is applied to the case of dual-core amplifiers. It is shown that a non-phase-matched coupling term, which is usually irrelevant in single-core amplifiers, can strongly affect the mode stability when the coupling length between supermodes exceeds a few centimeters. The phase-mismatched coupling can lead to a strongly reduced instability threshold and static deformation effects for a range of intermediate coupling lengths.
Related Concept Videos
Molecular Orbital Theory II
The Nucleosome Core Particle
The paradox
Nucleosomes, paradoxically, perform two opposite functions simultaneously. On the one hand, their main responsibility is to protect the delicate DNA strands from physical damage and help achieve a higher compaction ratio. While on the other hand, they must allow polymerase enzymes to access DNA...
Microtubule Instability
Operational Amplifiers
MOSFET Amplifiers
BJT Amplifiers
In BJT amplifier configurations, particularly in common-emitter setups, the transistor's role...

