Fiber-Optic Technologies for Communication and Sensing

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "A:Physics".

Deadline for manuscript submissions: 31 May 2025 | Viewed by 744

Special Issue Editors


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Guest Editor
School of Cyberspace Science and Technology, Beijing Institute of Technology, Beijing 100081, China
Interests: ultra-high speed optical communications; optical signal processing; nonlinear optics; time lens; optical fourier transformation; spectrally-efficient communications; flexible PON system

E-Mail Website
Guest Editor
State Key Laboratory of Information of Photonics and Optical Communications, School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
Interests: programmable photonic chips; integrated optical Kerr frequency combs

Special Issue Information

Dear Colleagues,

This Special Issue, entitled "Fiber-Optic Technologies for Communication and Sensing", aims to delve into the innovations within the field of fiber-optic technologies, where fiber-based devices stand at the forefront. This Special Issue aims to focus on the intricate and sophisticated world of fiber-optic technologies—encompassing sensors, amplifiers, and fiber lasers—that are driving advancements across various domains. From the precision required in sensing applications to the demands of high-speed communication networks, and even the emerging challenges in micro-nano research, these optical solutions are proving to be both versatile and indispensable.

In this rapidly evolving landscape, the unique capabilities of fiber optics, such as their sensitivity, bandwidth, and integrative potential, offer exciting new possibilities. This Special Issue seeks to capture the full spectrum of current research, ranging from theoretical explorations to practical implementations. We encourage submissions that push the boundaries of what is possible, whether through novel device designs, cutting-edge signal processing algorithms, or innovative system integrations. The topics of interest for this Special Issue include, but are not limited to, the design, fabrication, and characterization of photonic components and their applications, fiber lasers, optical frequency combs, photonic crystal fibers, nonlinear devices, optical computing, quantum information processing, optical interconnects, and optical access networks.

Prof. Dr. Pengyu Guan
Prof. Dr. Xingyuan Xu
Guest Editors

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Keywords

  • optical signal processing
  • optical communication
  • nonlinear devices
  • fiber lasers
  • optical frequency comb
  • photonic crystal fibers
  • optical computing
  • quantum information processing
  • optical interconnects
  • optical fiber amplifier and optical module
  • fiber-optic sensor
  • fiber Bragg grating

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Published Papers (1 paper)

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Research

11 pages, 2585 KiB  
Article
Narrow Linewidth All-Optical Microwave Oscillator Based on Torsional Radial Acoustic Modes of Single-Mode Fiber
by Wen Wang, Wenjun He, Xinyue Fang, Yi Liu, Yajun You, Mingxing Li, Lei Yu, Qing Yan, Yafei Hou, Jian He and Xiujian Chou
Micromachines 2025, 16(1), 97; https://doi.org/10.3390/mi16010097 - 15 Jan 2025
Viewed by 524
Abstract
A Hz level narrow linewidth all-optical microwave oscillator based on the torsional radial acoustic modes (TR2,m) of a single-mode fiber (SMF) is proposed and validated. The all-optical microwave oscillator consists of a 20 km SMF main ring cavity and a 5 [...] Read more.
A Hz level narrow linewidth all-optical microwave oscillator based on the torsional radial acoustic modes (TR2,m) of a single-mode fiber (SMF) is proposed and validated. The all-optical microwave oscillator consists of a 20 km SMF main ring cavity and a 5 km SMF sub ring cavity. The main ring cavity provides forward stimulated Brillouin scattering gain and utilizes a nonlinear polarization rotation effect to achieve TR2,7 mode locking. By combining the sub ring cavity with the main ring cavity and utilizing the Vernier effect, the TR2,7 mode microwave photonic single longitudinal mode (SLM) output can be ensured. Meanwhile, the 6.281 Hz narrow linewidth of the TR2,7 mode is achieved by reducing the intrinsic linewidth of the passive resonant cavity. The acoustic mode suppression ratio and side mode suppression ratio of the TR2,7 mode were 43 dB and 54 dB, respectively. The power and frequency fluctuations of within 40 min were approximately ±0.49 dB and ±0.187 kHz, indicating good stability. At a frequency offset of 10 kHz, the TR2,7 mode had a low phase noise value of −110 dBc/Hz. This solution can be used in various fields, such as high-precision radar detection, long-distance optical communication, and high-performance fiber optic sensing. Full article
(This article belongs to the Special Issue Fiber-Optic Technologies for Communication and Sensing)
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