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Updated: Mar 15, 2026
09:39
In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
Published on: May 27, 2013
12.8K
Theoretical study of mode evolution in active long tapered multimode fiber
Optics Express
|August 25, 2016
Summary
This study presents a coupled mode theory model for analyzing mode evolution in long tapered active fibers. The model accounts for core variations, gain, loss, and curvature, offering design insights for fiber lasers and amplifiers.
Area of Science:
- Optics and Photonics
- Fiber Optics Engineering
Background:
- Tapered active fibers are crucial components in lasers and amplifiers.
- Understanding mode evolution is essential for optimizing device performance.
- Existing models may not fully capture the complexities of long tapered fibers.
Purpose of the Study:
- To develop a concise and effective model for describing mode evolution in long tapered active fibers.
- To analyze the impact of various physical factors on mode coupling and evolution.
Main Methods:
- Utilizing coupled mode theory.
- Incorporating local gain with transverse spatial hole burning (TSHB) effect.
- Analyzing mode coupling due to core radius variations and perturbations.
- Considering fiber loss and curvature.
Main Results:
- A numerical investigation of mode evolution behaviors under different factors was performed.
- The model effectively describes mode coupling influenced by core geometry and perturbations.
- The impact of gain, loss, and curvature on mode evolution was quantified.
Conclusions:
- The developed model provides a robust framework for analyzing mode evolution in long tapered active fibers.
- The findings offer valuable guidance for the design and optimization of fiber-based lasers and amplifiers.
- This work contributes to the advancement of high-power fiber optic devices.
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