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Related Experiment Video

Updated: Oct 6, 2025

Writing Bragg Gratings in Multicore Fibers

Writing Bragg Gratings in Multicore Fibers

Published on: April 20, 2016

Tailored Multi-Color Dispersive Wave Formation in Quasi-Phase-Matched Exposed Core Fibers.

Tilman A K Lühder¹, Mario Chemnitz², Henrik Schneidewind¹

¹Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, Jena, 07745, Germany.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)

|January 17, 2022

Summary

Researchers developed a novel method for generating widely tunable femtosecond light pulses using engineered fiber optics. This breakthrough enhances dispersive wave generation for advanced applications in biophotonics and quantum technology.

Keywords:

dispersive wave quasi phase-matching soliton tantalum pentoxide

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Last Updated: Oct 6, 2025

Writing Bragg Gratings in Multicore Fibers

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Published on: April 20, 2016

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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Published on: March 20, 2017

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Published on: August 5, 2013

Area of Science:

Nonlinear optics
Photonics
Materials science

Background:

Compact, tunable femtosecond light sources are crucial for fields like medical diagnostics, biophotonics, and metrology.
Existing fiber laser technology faces challenges in achieving broad spectral tunability for femtosecond pulses.
Dispersive wave generation (Cherenkov radiation) presents a promising avenue for developing such sources.

Purpose of the Study:

To exploit quasi-phase matching for multi-order dispersive wave generation with high spectral fidelity and femtosecond durations.
To achieve tunability in conventionally difficult spectral regions.
To develop a versatile and robust femtosecond light source.

Main Methods:

Utilizing patterned sputtering to create height-modulated high-index nano-films on exposed fiber cores.
Modifying fiber dispersion through spatially localized, induced resonances.
Conducting nonlinear optical experiments and simulations.
Analyzing phase-mismatching using effective dispersion.

Main Results:

Demonstrated multi-order dispersive wave formation with record-high spectral fidelity and femtosecond durations.
Achieved significant alteration of fiber dispersion via engineered nano-films.
Observed unique emission features, including power-independent wavelength stability.
Confirmed the conversion process through experiments and simulations.

Conclusions:

The resonance-empowered approach enables efficient, coherent femtosecond multi-frequency conversion.
This method is applicable to both fiber and on-chip photonic systems.
Paves the way for instrumentalizing dispersive wave generation as a unique tool for advanced applications.
Potential applications include bioanalytics, life sciences, and quantum technology.