Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
3.5
1.9
Journals
Photonics
Special Issues
Advanced Optical Transmission Techniques
share announcement

Advanced Optical Transmission Techniques

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

Deadline for manuscript submissions: 31 January 2026 | Viewed by 3198

Special Issue Editors

Dr. Zhipei Li

E-Mail Website
Guest Editor
School of Information and Electronics, Beijing Institute of Technology, Beijing, China
Interests: coherent optical communication; ultra-high speed transmission system; intelligent optical signal processing; short-reach optical interconnection
Special Issues, Collections and Topics in MDPI journals
Dr. Xishuo Wang

E-Mail
Guest Editor
Network Technology Research Department, China Telecom Research Institute, Beijing, China
Interests: coherent optical communication; new-type fiber; coherent digital signal processing; ultra-high speed transmission system
Dr. Weiwen Kong

E-Mail
Guest Editor
Institute of Basic Operations Technology, China Telecom Research Institute, Beijing 102209, China
Interests: optical communications; large-capacity optical transmission; quantum communication; quantum key distribution; novel fiber

Special Issue Information

Dear Colleagues,

Since the breakthrough introduction of low-loss optical fiber and semiconductor lasers in 1970, optical communication has undergone an unprecedented revolution, evolving into the backbone of global information networks. Over the past decades, transmission capacities have surged by millions of times, enabling applications across ultra-long-distance telecommunications, mobile networks, data centers, cloud computing, and beyond. Today, as society enters a new era of data-driven d0emands—requiring higher speeds, lower latency, greater capacity, and enhanced reliability—optical communication technologies continue to push boundaries through innovations in scalability, flexibility, and cost efficiency.

This Special Issue, "Advanced Optical Transmission Techniques", aims to showcase cutting-edge research and transformative solutions addressing the challenges and opportunities in next-generation optical communication systems. We invite contributions from researchers, engineers, and industry experts to explore novel methodologies, architectures, and technologies that redefine the limits of optical transmission.

Topics of Interest

  • High-capacity transmission systems (e.g., SDM, WDM, advanced modulation formats);
  • AI-/ML-driven optimization for optical network design and signal processing;
  • Novel photonic devices and components for low-noise, low-loss transmission;
  • Coherent detection, DSP algorithms, and nonlinear compensation techniques;
  • Flexible and reconfigurable optical network architectures;
  • Integration of optical systems with 5G/6G, IoT, and edge computing;
  • Energy-efficient and cost-effective solutions for large-scale deployments;
  • Emerging technologies: quantum communication, photonic integrated circuits, and hollow-core fibers;
  • Applications in terrestrial, submarine, space, and military communications.

Dr. Zhipei Li
Dr. Xishuo Wang
Dr. Weiwen Kong
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.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • high-capacity transmission systems
  • artificial intelligence optical communication
  • digital signal processing
  • data center optical interconnection
  • flexible optical network

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • Reprint: MDPI Books provides the opportunity to republish successful Special Issues in book format, both online and in print.

Further information on MDPI's Special Issue policies can be found here.

Published Papers (3 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

12 pages, 1805 KB  
Article
Experimental Demonstration of High-Security and Low-CSPR Single-Sideband Transmission System Based on 3D Lorenz Chaotic Encryption
by Chao Yu, Angli Zhu, Hanqing Yu, Yuanfeng Li, Mu Yang, Peijin Hu, Haoran Zhang, Xuan Chen, Hao Qi, Deqian Wang, Yiang Qin, Xiangning Zhong, Dong Zhao and Yue Liu
Photonics 2025, 12(11), 1042; https://doi.org/10.3390/photonics12111042 - 22 Oct 2025
Abstract
Broadcast-style downlinks (e.g., PONs and satellites) expose physical waveforms despite transport-layer cryptography, motivating physical-layer encryption (PLE). Digital chaotic encryption is appealing for its noise-like spectra, sensitivity, and DSP-friendly implementation, but in low-CSPR KK-SSB systems, common embeddings disrupt minimum-phase requirements and raise PAPR/SSBI near [...] Read more.
Broadcast-style downlinks (e.g., PONs and satellites) expose physical waveforms despite transport-layer cryptography, motivating physical-layer encryption (PLE). Digital chaotic encryption is appealing for its noise-like spectra, sensitivity, and DSP-friendly implementation, but in low-CSPR KK-SSB systems, common embeddings disrupt minimum-phase requirements and raise PAPR/SSBI near 1 dB CSPR, while finite-precision effects can leak correlation after KK reconstruction. We bridge this gap by integrating 3D Lorenz-based PLE into our low-CSPR KK-SSB receiver. A KK-compatible embedding applies a Lorenz-driven XOR mapping to I/Q bitstreams before PAM4-to-16QAM modulation, preserving the minimum phase and avoiding spectral zeros. Co-design of chaotic strength and subband usage with the KK SSBI-suppression method maintains SSBI mitigation with negligible PAPR growth. We further adopt digitization settings and fractional-digit-parity-based key derivation to suppress short periods and remove key-revealing synchronization cues. Experiments demonstrate a 1091 key space without degrading transmission quality, enabling secure, key-concealed operation on shared downlinks and offering a practical path for chaotic PLE in near-minimum-CSPR SSB systems. Full article
(This article belongs to the Special Issue Advanced Optical Transmission Techniques)
►▼ Show Figures

Figure 1

23 pages, 1461 KB  
Article
Q-Learning for Resource-Aware and Adaptive Routing in Trusted-Relay QKD Network
by Yuanchen Hao, Yuheng Xie, Wenpeng Gao and Jianjun Tang
Photonics 2025, 12(10), 969; https://doi.org/10.3390/photonics12100969 - 30 Sep 2025
Viewed by 350
Abstract
Efficient and scalable quantum key scheduling remains a critical challenge in trusted-relay Quantum Key Distribution (QKD) networks due to imbalanced key resource utilization, dynamic key consumption, and topology-induced congestion. This paper presents a Q-learning-based adaptive routing framework designed to optimize quantum key delivery [...] Read more.
Efficient and scalable quantum key scheduling remains a critical challenge in trusted-relay Quantum Key Distribution (QKD) networks due to imbalanced key resource utilization, dynamic key consumption, and topology-induced congestion. This paper presents a Q-learning-based adaptive routing framework designed to optimize quantum key delivery in dynamic QKD networks. The model formulates routing as a Markov Decision Process, with a compact state representation that combines the current node, destination node, and discretized key occupancy levels. The reward function is designed to jointly penalize resource imbalance and rapid key depletion while promoting traversal through links with sustainable key generation, guiding the agent toward balanced and congestion-aware decisions. Simulation results demonstrate that the Q-learning scheduler outperforms non-adaptive baseline algorithms, achieving an average distribution time of approximately 100 s compared with 170–590 s for the baseline algorithms, a throughput of 61 keys/s compared with 32–55 keys/s, and a failure ratio limited to 0–0.1, demonstrating superior scalability, congestion resilience, and resource-efficient decision-making in dynamic QKD networks. Full article
(This article belongs to the Special Issue Advanced Optical Transmission Techniques)
►▼ Show Figures

Figure 1

16 pages, 7321 KB  
Article
Ultra-Low Loss Hybrid Anti-Resonant Hollow-Core Fiber with Double Semi-Circular Tubes Sandwiched Elliptic Tube
by Zhipei Li, Shuaihang Wang, Ran Gao, Li Li, Lei Zhu, Qi Zhang and Xiangjun Xin
Photonics 2025, 12(6), 540; https://doi.org/10.3390/photonics12060540 - 26 May 2025
Cited by 1 | Viewed by 2432
Abstract
We propose a new hollow-core fiber design based on a hybrid structure of nested elliptical and semicircular tubes. We numerically investigate the loss and single-mode performance of this design in the communication band and derive the values of each parameter of the fiber [...] Read more.
We propose a new hollow-core fiber design based on a hybrid structure of nested elliptical and semicircular tubes. We numerically investigate the loss and single-mode performance of this design in the communication band and derive the values of each parameter of the fiber cladding structure that theoretically lead to the best performance of the fiber. The resulting structure has a minimum confinement loss as low as 0.00033 dB/km at 1550 nm and an astonishing extinction ratio of 2,439,607 for the higher-order modes, showing excellent loss and single-mode performance. In addition, the design also exhibits excellent bending insensitivity, with the loss gradually dropping well below 0.01 dB/km when the bending radius exceeds 14 cm. The proposed fiber structure has a very promising application in optical communication systems. Full article
(This article belongs to the Special Issue Advanced Optical Transmission Techniques)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-3
Back to TopTop