Advances in Hollow Core Optical Fibers: From Fundamentals to Applications

A special issue of Photonics (ISSN 2304-6732).

Deadline for manuscript submissions: 10 February 2026 | Viewed by 62

Special Issue Editors

School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
Interests: microstructured fibers; hollow-core fibers; fiber lasers; inline fiber devices

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Guest Editor
School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
Interests: hollow-core fibers; ultrafast light-matter interactions; nonlinear optics avatar

Special Issue Information

Dear Colleagues,

Hollow-core optical fibers (HCFs) have witnessed remarkable advancements in recent years, achieving unprecedented milestones in broadband, low-loss, and low-latency transmission. These achievements extend well beyond telecommunications, with HCFs enabling transformative applications in diverse fields, including nonlinear optics in gas- and liquid-filled fibers, high-sensitivity sensing, spectroscopy, fiber lasers, biomedical diagnostics, optofluidics, and quantum technologies.

The field has delivered impressive results—such as sub-cycle and sub-femtosecond optical pulse compression, the millijoule-level energy scaling of optical solitons, and the generation of multi-octave Raman frequency combs—and continues to expand. HCFs have also paved the way for a new class of gas-based light sources spanning the deep ultraviolet to the mid-infrared. These fibers offer incredible potential for nonlinearity-free laser beam delivery, with demonstrations of the high-beam-quality transmission of kilowatt-level continuous-wave lasers and gigawatt-peak-power ultrashort pulses.

This Special Issue invites original research articles showcasing the latest theoretical, numerical, and experimental advances in hollow-core optical fibers and their wide-ranging applications. Topics include, but are not limited to, the following:

  • Novel optical fiber geometry design, fabrication, and characterization;
  • Hollow-core fibers for telecommunications;
  • Multimode hollow-core fibers and their applications
  • The spectroscopy and sensing applications of hollow-core fibers;
  • Ultrafast optics in hollow-core fibers;
  • Light–matter interactions in hollow-core fibers;
  • Deep-UV sources using hollow-core fibers and their applications;
  • Mid-IR sources using hollow-core fibers and their applications;
  • Laser beam delivery using hollow-core fibers;
  • Interconnections of hollow-core fibers with all-solid fibers;
  • Hollow-core fiber-based inline devices;

Dr. Charu Goel
Dr. Daiqi Xiong
Guest Editors

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Keywords

  • hollow-core optical fibers
  • antiresonant optical fibers
  • photonic bandgap fibers
  • gas lasers
  • light–matter interactions
  • mid-infrared sources
  • THz waveguides
  • optical fiber sensing
  • beam delivery

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Published Papers

This special issue is now open for submission.
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