Specialty Optical Fibers and Their High-Power Applications

Dear Colleagues,

Optical fiber is an important carrier for laser generation and transmission, which is also the heart of fiber lasers. The huge progress in optical fiber design/fabrication and fiber-based optical components has enabled the rapid development of fiber lasers in the past two decades. However, fiber lasers also encounter a series of limiting factors, such as nonlinear effects, photodarkening, and transverse mode instability, that hinder further performance improvement. In this case, specialty optical fibers, which offer additional degrees of design flexibility, have shown enormous potential and have brought dynamism into the development of fiber lasers, especially for high-power fiber laser applications. The specialty optical fiber could be manipulated in both the transversal and longitudinal dimensions, and the material compositions could also be optimized to alleviate the detrimental effects and meet the demands of specific applications. Therefore, specialty optical fibers become an increasingly important driving factor for the fiber laser community.

This Special Issue aims to highlight the recent advances in the field of specialty optical fibers and their high-power applications. Original papers and review articles are welcome. Technical topics include but are not limited to the following research areas:

• Modeling and design method of specialty optical fiber;
• Specialty optical fiber fabrication technology;
• Specialty optical fiber materials for lasers, aiming at photodarkening suppression, TMI mitigation, nonlinear effects suppression, radiation resistance, etc.;
• Techniques for characterizing specialty optical fibers;
• Functional optical fibers for long-range power delivery, single-mode operation, bending distortion resistance, laser polarizing, etc.;
• Large-mode-area fibers for high-order-mode suppression and TMI mitigation, including but not limited to 3C fiber, spectral filtering fiber, multi/single-trench fiber, large-pitch fiber, confined-doped fiber, low numerical aperture fiber, tapered fiber, etc.;
• Specialty optical fiber based-components;
• Specialty optical fiber-based lasers and amplifiers, including but not limited to the rare-earth-doped fiber laser, Raman fiber laser, gas-filled Raman fiber laser, Brillouin fiber laser, random fiber laser, optical parametric oscillator, optical parametric amplifier, etc.

We look forward to receiving your contributions.

Dr. Liangjin Huang
Dr. Hanshuo Wu
Guest Editors

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• specialty optical fibers design
• specialty optical fibers fabrication
• photonic crystal, microstructured, and hollow core fibers
• large mode area fiber
• fiber lasers and amplifiers