Optical Communication: Technologies and Applications

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

Deadline for manuscript submissions: 15 July 2026 | Viewed by 1210

Special Issue Editors


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Guest Editor
The Pollard Institute, School of Electronic and Electrical Engineering, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, West Yorkshire, UK
Interests: THz communications; reservoir computing; secure optical communication; laser dynamics; time-delayed systems

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Guest Editor
School of Optoelectronics Science and Engineering and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China
Interests: microwave photonics; radio-over-fiber; laser dynamics; chaos-based communications; random number generation
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Special Issue Information

Dear Colleagues,

Optical communication underpins the world’s data infrastructure, from long-haul submarine cables to short-reach datacenter interconnects and emerging free-space and quantum links. Rapid progress in integrated photonics, digital signal processing (DSP), advanced modulation, and novel spectral bands is reshaping what is possible in capacity, efficiency, security, and cost.

We are pleased to invite you to contribute to this Special Issue, titled “Optical Communication: Technologies and Applications,” which will highlight both fundamental advances and real-world deployments. This Special Issue aims to advance the science and engineering of optical communications across devices, subsystems, and wireless/wired networks. We welcome contributions that bridge theory and experiment, include benchmarking or reproducible methods, and clearly articulate implications for scalable systems.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

  • IMDD systems;
  • Coherent transceivers;
  • Advanced modulation and coding;
  • DSP and machine learning for optics;
  • Fiber, free-space, and underwater links;
  • Space/division/wavelength multiplexing;
  • Integrated and silicon photonics for communications;
  • THz communications;
  • Visible Light Communications;
  • Optical access and datacenter networks;
  • Quantum communication and QKD.

We look forward to receiving your valuable contributions.

Dr. Jayaprasath Elumalai
Prof. Dr. Nianqiang Li
Guest Editors

Manuscript Submission Information

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Keywords

  • optical communication
  • fiber optics
  • free-space optics
  • integrated photonics
  • silicon photonics
  • coherent systems
  • modulation and coding
  • optical networks
  • quantum communication
  • terahertz links

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Published Papers (1 paper)

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Research

11 pages, 2683 KB  
Article
High-Bandwidth 940 nm VCSEL with Zn-Diffusion for Optical Communications
by Fu-He Hsiao, Yu-Jie Lin, Chia-Jung Tsai, Chia-Chen Li, Yun-Han Chang, Chih-Ting Chang, Jr-Hau He, Chun-Liang Lin, Yu-Heng Hong and Hao-Chung Kuo
Photonics 2026, 13(4), 353; https://doi.org/10.3390/photonics13040353 - 8 Apr 2026
Viewed by 246
Abstract
We present the simulation-guided design and experimental demonstration of high-speed 940 nm vertical-cavity surface-emitting lasers (VCSELs). Utilizing established device optimization principles, a simulation study was conducted focusing on the number of oxide layers and the aperture size, which predicted a maximum modulation bandwidth [...] Read more.
We present the simulation-guided design and experimental demonstration of high-speed 940 nm vertical-cavity surface-emitting lasers (VCSELs). Utilizing established device optimization principles, a simulation study was conducted focusing on the number of oxide layers and the aperture size, which predicted a maximum modulation bandwidth of over 35 GHz. To validate the simulation, a device with a 4-μm double-oxide aperture was fabricated and characterized. Additionally, a Zn-diffusion process was incorporated during fabrication to reduce p-DBR resistance and suppress higher-order transverse modes. The fabricated device achieved an experimental modulation bandwidth of 34 GHz and demonstrated successful 100 Gbit/s PAM-4 data transmission. The close agreement between the simulated and measured performance highlights the successful practical integration of these techniques for developing high-speed optical interconnects. Full article
(This article belongs to the Special Issue Optical Communication: Technologies and Applications)
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