Advancements in Optical Sensing and Communication Technologies

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

Deadline for manuscript submissions: 10 May 2025 | Viewed by 1726

Special Issue Editor


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Guest Editor
Wuhan National Lab for Optoelectronics (WNLO), National Engineering Research Center of Next Generation Internet Access System, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
Interests: optical fiber sensing; optical sensing devices; distributed optical fiber sensing; optical fiber communication; integration of sensing and communication over fiber

Special Issue Information

Dear Colleagues,

Optical sensors and communication have attracted increasing attention from academia and industry in the past several decades. The growing demands in fields such as the biological, medical, structural health monitoring, and geophysical science fields have accelerated the research on and development of optical sensors with high sensing performance. However, optical sensors still encounter challenges; for example, innovative ideas are needed to achieve performance enhancements including high measurement accuracy, high spatial resolution, long sensing range, and large dynamic sensing range. Meanwhile, optical communications, including communications through optical fiber, through free space, under water, and in outer space have met an increasing capacity crisis. We hope to collect innovative ideas and schemes to address the challenges and to provide new opportunities.

Dr. Can Zhao
Guest Editor

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Keywords

  • optical sensing
  • optical communication
  • optical fiber

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Published Papers (2 papers)

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Research

7 pages, 2081 KiB  
Communication
Improving the Performance of Bidirectional Communication System Using Second-Order Raman Amplifiers
by Zhongshuai Feng, Peili He, Wei Li, Kaijing Hu, Fei Tong and Xingrui Su
Photonics 2024, 11(9), 879; https://doi.org/10.3390/photonics11090879 - 19 Sep 2024
Viewed by 551
Abstract
In order to achieve low-cost scalability, the same-wavelength bidirectional (SWB) fiber communication system is a better solution. We present a detailed investigation of the performance of the different orders Raman amplifiers in same-wavelength bidirectional fiber communication systems. We discuss how to suppress the [...] Read more.
In order to achieve low-cost scalability, the same-wavelength bidirectional (SWB) fiber communication system is a better solution. We present a detailed investigation of the performance of the different orders Raman amplifiers in same-wavelength bidirectional fiber communication systems. We discuss how to suppress the main factor affecting system performance which is Rayleigh scattering noise (RSN). By using different Raman amplifiers to construct different quasi-lossless transmission, the performance changes in the same-wavelength bidirectional fiber optic communication system were studied. On this basis, multi-channel and same-wavelength single fiber bidirectional system experiments were conducted to compare the performance of second-order Raman systems and first-order Raman systems. The results indicate that the Rayleigh scattering suppression effect of second-order Raman systems is better, and compared to first-order Raman systems, the average signal-to-noise ratio (SNR) can be increased by 2.88 dB. Full article
(This article belongs to the Special Issue Advancements in Optical Sensing and Communication Technologies)
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10 pages, 3085 KiB  
Article
A Multi-Parameter Tunable and Compact Plasmon Modulator in the Near-Infrared Spectrum
by Xuefang Hu, Hongfei Wang, Sisi Yang, Changgui Lu, Xiangyue Zhao and Mengjia Lu
Photonics 2024, 11(6), 530; https://doi.org/10.3390/photonics11060530 - 3 Jun 2024
Viewed by 572
Abstract
To keep pace with the demands of modern photonic integration technology, the electro-optic modulator should feature multi-parameter tunable components and a compact size. Here, we propose a hybrid structure that can modulate the multi-parameters of surface plasmon polaritons (SPPs) simultaneously with a compact [...] Read more.
To keep pace with the demands of modern photonic integration technology, the electro-optic modulator should feature multi-parameter tunable components and a compact size. Here, we propose a hybrid structure that can modulate the multi-parameters of surface plasmon polaritons (SPPs) simultaneously with a compact size by controlling the electron concentration of indium tin oxide (ITO) in the near-infrared spectrum. The length, width and height of the device are only 15 μm, 5 μm and 9 μm, respectively. The numerical results show that when the electron concentration in ITO changes from 7.5 × 1026 m−3 to 9.5 × 1026 m−3, the variation in amplitude, wavelength and phase are 49%, 300 nm and 347°, respectively. The demonstrated structure paves a new way for multi-parameter modulation and the realization of ultracompact modulators. Full article
(This article belongs to the Special Issue Advancements in Optical Sensing and Communication Technologies)
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