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Related Experiment Video

Updated: May 18, 2026

Writing Bragg Gratings in Multicore Fibers
08:48

Writing Bragg Gratings in Multicore Fibers

Published on: April 20, 2016

Multicore fiber distributed feedback lasers.

P S Westbrook1, K S Abedin, T F Taunay

  • 1OFS Laboratories, 19 Schoolhouse Road, Somerset, New Jersey 08873, USA. westbrook@ofsoptics.com

Optics Letters
|October 3, 2012
PubMed
Summary
This summary is machine-generated.

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Researchers fabricated seven fiber distributed feedback (DFB) lasers simultaneously in a multicore fiber. These lasers operate at 1545 nm with narrow linewidths, enabling efficient parallel optical signal generation.

Area of Science:

  • Optics and Photonics
  • Materials Science
  • Fiber Lasers

Background:

  • Multicore fibers offer potential for increased optical device density.
  • Distributed feedback (DFB) lasers are crucial for wavelength-selective optical applications.
  • Fabricating multiple DFB lasers in a single fiber presents fabrication challenges.

Purpose of the Study:

  • To demonstrate parallel fabrication of multiple DFB lasers.
  • To investigate the performance of DFB lasers in a multicore fiber architecture.
  • To enable compact and efficient fiber laser sources.

Main Methods:

  • Utilized a hexagonally arrayed multicore Er-doped fiber with 40 μm core spacing.
  • Employed a single UV inscription exposure to create 8 cm long DFB grating cavities.

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

Published on: November 22, 2019

Related Experiment Videos

Last Updated: May 18, 2026

Writing Bragg Gratings in Multicore Fibers
08:48

Writing Bragg Gratings in Multicore Fibers

Published on: April 20, 2016

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
08:48

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

Published on: November 22, 2019

  • Characterized laser operation near 1545 nm.

    • Main Results:

    • Successfully fabricated seven DFB lasers in parallel.
    • Achieved dual polarization, single longitudinal mode operation for each laser.
    • Observed a linewidth below 300 kHz for all fabricated lasers.

    Conclusions:

    • Parallel fabrication of DFB lasers in multicore fibers is feasible.
    • The demonstrated method enables compact, high-performance fiber laser arrays.
    • This technique advances the development of integrated photonic devices.