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Related Experiment Video

Updated: Apr 15, 2026

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Published on: November 22, 2019

Flexible pulse-controlled fiber laser.

Xueming Liu¹, Yudong Cui¹

¹State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China.

Scientific Reports

|March 25, 2015

Summary

This summary is machine-generated.

We developed a compact all-fiber laser with tunable pulse width and wavelength using a fiber Bragg grating (FBG) filter. This flexible laser offers precise control and stability for diverse optical applications.

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Last Updated: Apr 15, 2026

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Area of Science:

Optics and Photonics
Fiber Lasers
Optical Engineering

Background:

Controlled flexible pulses are crucial for fiber telecommunication, optical sensing, metrology, and microscopy.
Existing methods for pulse control can be complex or lack flexibility.

Purpose of the Study:

To report a compact, pulse-controlled all-fiber laser system.
To demonstrate independent tuning of pulse width and wavelength.
To provide a stable, low-cost laser source for various applications.

Main Methods:

Utilized an intracavity fiber Bragg grating (FBG) system as a flexible filter.
Employed a cantilever beam for independent vertical and horizontal translation to control FBG bandwidth and position.
Integrated the FBG system into an all-fiber laser cavity.

Main Results:

Achieved flexible and accurate tuning of pulse width from ~7 to ~150 ps by controlling FBG bandwidth.
Enabled precise tuning of pulse wavelength over a range of >20 nm.
Demonstrated a laser system that is precisely controlled and insensitive to environmental perturbations.

Conclusions:

The developed all-fiber laser offers a simple, stable, and low-cost solution for applications requiring tunable pulse width and/or wavelength.
The FBG-based system provides independent and precise control over laser pulse characteristics.
This technology has significant potential for advancements in telecommunication, sensing, and microscopy.