The Emerging Science in Microstructured Optical Fibers

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Optoelectronics and Optical Materials".

Deadline for manuscript submissions: closed (31 August 2024) | Viewed by 1836

Special Issue Editors


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Guest Editor
Department of Physics, Faculty of Arts and Sciences, Beijing Normal University, Zhuhai 519085, China
Interests: mmW–THz–infrared; THz sources and detectors; lab-on-a-chip/lab-in-fiber; micro- and nano-photonics
Center for Cognition and Neuroergonomics, State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Zhuhai 519087, China
Interests: microstructured optical fiber; polymer optical fiber; optical fiber sensing; speckle analysis; microwave photonics
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Special Issue Information

Dear Colleagues,

In this Special Issue, we expand our exploration of microstructured optical fibers (MOFs) to include breakthroughs across a spectrum from terahertz to optical frequencies. We encompass traditional and emerging areas, ensuring a balanced focus across diverse topics.

Our coverage includes the latest in fiber lasers, emphasizing their wide-ranging applications and innovations. The complex field of nonlinear fiber optics is explored, addressing both theoretical and practical challenges. High-power fiber optics, pivotal in advancing high-intensity applications, are also discussed.

This Special Issue examines the integration of MOFs with semiconductor technology, emphasizing the growing importance of fiber-to-chip systems. In addition, we explore the evolving fields of wearable fiber sensors and brain–machine interface (BMI) fiber networks, reflecting their potential in personal health monitoring and neuroscience, respectively.

Topics also include the development of advanced fiber sensors, highlighting their role in new sensing technologies. Lab-on-fiber systems are showcased for their capabilities in miniaturized, advanced analysis. The promising area of optical neural networks in optical computing is discussed, along with specialized topics like THz waveguide design and single-mode THz guidance in flexible fibers. We also delve into mid-infrared hollow-core fibers, crucial for applications in various spectroscopic and sensing fields.

Dr. Binbin Hong
Dr. Rui Min
Guest Editors

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Keywords

  • microstructured optical fibers
  • fiber lasers
  • nonlinear optics
  • high-power fiber optics
  • fiber-to-chip integration
  • fiber sensors, lab-on-fiber
  • optical neural networks
  • terahertz waveguide
  • mid-infrared fibers
  • wearable fiber sensors
  • brain–machine interface fiber networks

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Published Papers (1 paper)

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22 pages, 3915 KiB  
Review
Graphene Oxide and Reduced Graphene Oxide Saturable Absorbers: Advancements in Erbium-Doped Fiber Lasers for Mode-Locking and Q-Switching
by Tahani A. Alrebdi, Noor Fatima, Ali M. Alshehri, Adnan Khalil and Haroon Asghar
Photonics 2024, 11(12), 1181; https://doi.org/10.3390/photonics11121181 - 16 Dec 2024
Cited by 1 | Viewed by 1442
Abstract
Graphene oxide (GO) and reduced graphene oxide (rGO) have emerged as robust materials in the development of SAs for erbium-doped fiber lasers (EDFLs). Their exceptional optical properties, such as broadband absorption and fast recovery times, make them ideal candidates for achieving ultrashort pulse [...] Read more.
Graphene oxide (GO) and reduced graphene oxide (rGO) have emerged as robust materials in the development of SAs for erbium-doped fiber lasers (EDFLs). Their exceptional optical properties, such as broadband absorption and fast recovery times, make them ideal candidates for achieving ultrashort pulse operation in EDFLs. With its higher oxygen content, GO offers greater nonlinearity and a tunable absorption spectrum, while rGO, yielded through chemical reduction, exhibits enhanced electrical conductivity and higher saturable absorption. These properties facilitate the generation of ultrashort pulses in EDFLs, which are highly desired for various medical imaging, telecommunications, and material processing applications. This review paper comprehensively analyzes the advancements in GO and rGO SAs in the context of EDFLs for mode-locking and Q-switching applications. The performance of EDFLs utilizing GO and rGO SAs is critically evaluated, focusing on key parameters, such as modulation depth, pulse duration, repetition rate, average power, pulse energy, peak power, and signal-to-noise ratio. Additionally, this review delves into the various synthesis methods of GO and rGO thin film, highlighting their impact on the optical properties and performance of SAs. The discussion on techniques to integrate the SAs into laser cavities includes direct deposition of nanoparticles/thin-film-based SAs, tapered-fiber-based SAs, and D-shaped SAs. Furthermore, the paper explores the challenges encountered during the fabrication of ideal GO and rGO SAs, with issues related to uniformity, stability, and tunability, along with proposed solutions to address these challenges. The insights provided offer valuable guidance for future research aimed at enhancing the performance of EDFLs using GO/rGO SAs. Full article
(This article belongs to the Special Issue The Emerging Science in Microstructured Optical Fibers)
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