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Updated: Jul 12, 2026
09:39
In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
Published on: May 27, 2013
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Integrated mid-infrared broadband frequency conversion and evanescent sensing on a multimode chalcogenide rod
Applied Optics
|August 12, 2025
Summary
Researchers developed short, multi-tapered chalcogenide rods for dual mid-infrared applications. These rods enable supercontinuum generation and evanescent wave sensing, advancing compact fiber device technology.
Area of Science:
- Photonics and Optical Engineering
- Mid-Infrared Spectroscopy
- Fiber Optic Sensing
Background:
- Optical fibers are crucial for signal processing and sensing.
- Integrating nonlinear pulse processing and linear sensing on a single fiber in the mid-infrared remains challenging.
Purpose of the Study:
- To develop a single fiber device capable of both supercontinuum generation and evanescent wave sensing in the mid-infrared.
- To overcome limitations in combining distinct optical functions on one fiber segment.
Main Methods:
- Fabrication of very short multi-tapered chalcogenide rods (Te-As-Se).
- Utilizing femtosecond mid-infrared laser pumping for supercontinuum generation.
- Designing a coiled taper for evanescent wave sensing applications.
Main Results:
- Demonstrated ultrabroadband supercontinuum generation from 1.9 to 16 µm with significant average power in 5 cm long rods.
- Showcased the capability of a secondary coiled taper to act as a compact sensing head for mid-infrared signatures of alcoholic solutions.
Conclusions:
- The developed multi-tapered chalcogenide rods enable dual functionality for supercontinuum generation and mid-infrared sensing.
- This work is a significant step towards compact, integrated fiber devices for mid-infrared sensing technologies.
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