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Photonics
Special Issues
Mechanisms, Applications and Development of Microstructure-Based Fiber Devices
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Mechanisms, Applications and Development of Microstructure-Based Fiber Devices

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

Deadline for manuscript submissions: closed (1 January 2024) | Viewed by 7314

Special Issue Editors

Prof. Dr. Guiyao Zhou

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Guest Editor
Guangdong Provincial Engineering Technology Research Center for Microstructured Functional Fibers and Devices, South China Normal University, Guangzhou 510006, China
Interests: microstructured optical fiber device; microstructured fiber amplifier; optical fiber sensing
Prof. Dr. Jinghua Sun

E-Mail Website
Guest Editor
School of Electronic Engineering and Intelligentization, Dongguan University of Technology, Dongguan 523808, China
Interests: ultrafast optics; precision optical spectroscopy and metrology; optical frequency combs
Dr. Boyao Li

E-Mail Website
Guest Editor
School of Electronic Engineering and Intelligentization, Dongguan University of Technology, Dongguan 523808, China
Interests: microstructured optical fiber device; optical fiber modulation; optical fiber sensing

Special Issue Information

Dear Colleagues,

Different from traditional optical fibers, microstructured fibers have always been a hot research topic since their discovery, due to their flexible structure and diverse light-guiding mechanisms. Through years of research, the meaning of microstructure optical fibers has gradually expanded from traditional photonic crystal fibers to include various special fibers with micron-scale structures, such as hollow-core anti-resonance fibers and multicore fibers. Correspondingly, new mechanisms, devices and applications are emerging. Therefore, this Special Issue aims to encourage scholars in the field of microstructured fibers to review the development of microstructured fiber devices in such fields as lasers, sensing and communication, and to look forward to new trends in development. At the same time, we also welcome submissions of novel mechanisms and application research based on microstructured fiber devices.

Prof. Dr. Guiyao Zhou
Prof. Dr. Jinghua Sun
Dr. Boyao Li
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Photonics is an international peer-reviewed open access monthly journal published by MDPI.

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Keywords

  • microstructured optical fiber (MOF) device
  • MOF laser
  • MOF sensing
  • mathematical mechanism of MOF
  • MOF communication
  • modulator-based MOF
  • other applications based on MOF

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Published Papers (4 papers)

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Research

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10 pages, 3219 KiB  
Communication
All-Fiber In-Line Twist Sensor Based on a Capillary Optical Fiber
by Qinghua Tang, Jiajian Ruan, Xiaojie Zuo, Zhongye Xie and Xiaoyong Chen
Photonics 2023, 10(9), 1052; https://doi.org/10.3390/photonics10091052 - 15 Sep 2023
Cited by 1 | Viewed by 1148
Abstract
Twist sensors have emerged as crucial tools in the field of structural health monitoring, playing a significant role in monitoring and ensuring the integrity of critical infrastructure such as dams, tunnels, bridges, pipelines, and buildings. We proposed and demonstrated an all-fiber in-line twist [...] Read more.
Twist sensors have emerged as crucial tools in the field of structural health monitoring, playing a significant role in monitoring and ensuring the integrity of critical infrastructure such as dams, tunnels, bridges, pipelines, and buildings. We proposed and demonstrated an all-fiber in-line twist sensor which was based on a capillary fiber spliced between two single-mode fibers with a transverse offset. Through a series of experiments, the sensor’s performance was evaluated and quantified. The results showcased remarkable twist sensitivities in both clockwise and anticlockwise directions. With a transverse offset of 8.0 µm, the sensor exhibited twist sensitivities of −0.077 dB/° and 0.043 dB/° in the clockwise and anticlockwise directions, respectively, in the measured twist range from 0 to 90°. Furthermore, it was also demonstrated that the sensor was temperature insensitive at the chosen wavelength of 1520 nm, which can assist in increasing measurement accuracy. Our sensor’s low cost, simplicity of manufacture, and improved performance will push forward its adoption in future engineering applications such as structural health monitoring in dams, tunnels, and buildings. Full article
(This article belongs to the Special Issue Mechanisms, Applications and Development of Microstructure-Based Fiber Devices)
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10 pages, 2889 KiB  
Communication
Numerical Modelling of the Optical–Acoustical Characterization of an Anti-Resonant Bragg Hollow Core Fiber
by Ying Shi, Yilin Zhou, Wenjun Ni, Yongsheng Tian, Zhenggang Lian and Perry Ping Shum
Photonics 2023, 10(7), 814; https://doi.org/10.3390/photonics10070814 - 13 Jul 2023
Cited by 1 | Viewed by 1263
Abstract
Anti-resonant hollow core fibers (AR-HCFs) provide a promising solution for photothermal spectroscopy and photoacoustic imaging applications. Here, the AR-HCF serves as a micro platform to induce the photothermal/photoacoustic effect. Since the Bragg structure can induce multiple AR effects compared with the general AR-HCF, [...] Read more.
Anti-resonant hollow core fibers (AR-HCFs) provide a promising solution for photothermal spectroscopy and photoacoustic imaging applications. Here, the AR-HCF serves as a micro platform to induce the photothermal/photoacoustic effect. Since the Bragg structure can induce multiple AR effects compared with the general AR-HCF, we proposed a novel device, the AR-BHCF (AR-HCF with Bragg cladding), to enhance the excitation efficiency. The simulation and experimental results validate that the AR-BHCF dominates in having a stronger ability to confine the optical field in the air core indeed. Then, the acoustic signal stimulated by the photoacoustic effect will propagate along with the fiber axial, and part of it will penetrate out of the AR-BHCF. The results revealed that the transmission bandwidth of the acoustic wave in the AR-BHCF ranges from 1 Hz to 1 MHz, covering infrasound to ultrasound. In particular, a constant coefficient of 0.5 exists in the acoustic wave fading process, related to the propagation frequency and time. The acoustic signal can be monitored in real time, assisted by the ultra-highly sensitive sensor head. Therefore, BHCF-based devices combined with photoacoustic techniques may accelerate their sensing applications. Meanwhile, this scheme shines a light on the theoretical foundation of novel short-haul distributed acoustic sensing. Full article
(This article belongs to the Special Issue Mechanisms, Applications and Development of Microstructure-Based Fiber Devices)
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11 pages, 4703 KiB  
Communication
Delivery of Nearly Diffraction-Limited Picosecond Laser Pulses in the Air-Filled Anti-Resonant Hollow-Core Fiber at 1 μm Wavelength
by Leben Liang, Jingzhao Guan, Xinyue Zhu, Yazhou Wang, Dakun Wu, Fei Yu and Ying Han
Photonics 2023, 10(4), 416; https://doi.org/10.3390/photonics10040416 - 6 Apr 2023
Cited by 3 | Viewed by 2032
Abstract
We demonstrate the damage-free delivery of nearly diffraction-limited picosecond laser pulses at 1064 nm with a maximum peak power of 3.5 MW in a 5 m air-filled anti-resonant hollow-core fiber (AR-HCF). In the air-filled AR-HCF, the transmission efficiency of picosecond pulses is degraded [...] Read more.
We demonstrate the damage-free delivery of nearly diffraction-limited picosecond laser pulses at 1064 nm with a maximum peak power of 3.5 MW in a 5 m air-filled anti-resonant hollow-core fiber (AR-HCF). In the air-filled AR-HCF, the transmission efficiency of picosecond pulses is degraded due to stimulated Raman scattering for the incident peak power above 3.59 MW. The temporal compression of pulses is also observed in the air-filled AR-HCF, where the self-phase modulation plays a key role in the anomalous dispersion region. By vacuuming the air in the core, a nearly constant coupling efficiency of 77% is achieved through the 5 m AR-HCF free of nonlinear effects, with M2 of the output beam less than 1.17. Full article
(This article belongs to the Special Issue Mechanisms, Applications and Development of Microstructure-Based Fiber Devices)
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Review

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21 pages, 5976 KiB  
Review
Functionalized Chiral Twisted Optical Fibers: A Review
by Yifan Zhang, Boyao Li, Tianrong Huang, Guiyao Zhou and Yaoyao Liang
Photonics 2023, 10(9), 1025; https://doi.org/10.3390/photonics10091025 - 7 Sep 2023
Viewed by 1974
Abstract
With an increase in the volume of information exchange and perception, the demands for intelligent, miniaturized, and integrated optical devices for information acquisition are also increasing. As the core component of optical networks for transmitting information, further optimization of their structural characteristics to [...] Read more.
With an increase in the volume of information exchange and perception, the demands for intelligent, miniaturized, and integrated optical devices for information acquisition are also increasing. As the core component of optical networks for transmitting information, further optimization of their structural characteristics to generate richer optical characteristics and apply them to information exchange and optical field control has become a key research hotspot. The introduction of chiral twist characteristics has led to new phenomena and applications in optical field transmission and the transformation of traditional optical fibers or microstructured optical fibers (MOF). Therefore, this review mainly begins with the principle of chiral optical fibers, introduces their preparation and latest application scenarios, and finally discusses their potential future development prospects. Full article
(This article belongs to the Special Issue Mechanisms, Applications and Development of Microstructure-Based Fiber Devices)
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