Photonic Integrated Circuits: Techniques, Insights and Devices

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

Deadline for manuscript submissions: closed (30 June 2025) | Viewed by 320

Special Issue Editor


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Guest Editor
College of Engineering, City University of Hong Kong (Dongguan), Songshan Lake, Dongguan 523000, China
Interests: LNOI photonics; micro-nano fabrication; nonlinear optics; photonic integrated circuit; microcavity photonics

Special Issue Information

Dear Colleagues,

Photonic integrated circuits (PICs) represent a groundbreaking technology in the field of photonics, enabling the integration of complex photonic functions onto a single chip, such as light generation, modulation, routing, detection, and emission. It combines the scientific advantages of optical research with the scalability and integration capabilities of traditional electronic integrated circuits. This field spans multiple disciplines such as photonics, electronics, materials science, and biomedicine, and has the potential for a wide range of applications, including telecommunications, data centers, sensing, and biomedical devices.

Compared with traditional off-chip optical research, PICs not only offer integration and reduced energy consumption, but provide support for the maneuverability and stability of systems. With the current exponential growth of data pressure, PICs will provide an important platform and strategy for the future of optical computing, quantum computing, artificial intelligence, and life sciences.

This Special Issue, entitled "Photonic Integrated Circuits", welcomes the contribution of original research and review papers that provide fundamental research, studies on innovative applications and interdisciplinary research, among others. The scope of this Special Issue includes, but is not limited to, the following topics:

  • Exploring new optoelectronic integrated circuits that combine photonic and electronic technologies to enhance the transmission speed and efficiency of data.
  • Investigating adaptive photonic network architectures for dynamic routing and resource allocation, enhancing network flexibility and efficiency.
  • Studying the application of nonlinear optics in photonic integrated circuits to enable novel signal processing and information transmission functionalities.
  • Designing high-sensitivity integrated optical sensors for applications in on-chip sensing, optical interconnect and biological detection.
  • Investigating the use of quantum states for information transmission and processing to achieve ultra-efficient quantum communication and computing.
  • Investigating other photonics technologies that use photonic integrated circuits to achieve improvements in functionality and integration.

Dr. Wenzhao Sun
Guest Editor

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Keywords

  • photonic integrated circuit
  • optical materials
  • optical communications
  • integrated devices
  • biomedical devices

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Published Papers (1 paper)

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Research

14 pages, 23403 KiB  
Article
Flexibly Reconfigurable Kerr Micro-Comb Based on Cascaded Si3N4 Micro-Ring Filters
by Jieyu Yang, Guang Chen, Lidan Lu, Jianzhen Ou, Chao Mei, Yingjie Xu, Wenbo Bo, Peng Wang, Xinyi Li and Lianqing Zhu
Photonics 2025, 12(7), 661; https://doi.org/10.3390/photonics12070661 - 30 Jun 2025
Abstract
In recent years, micro-combs, due to their compact structure and high efficiency, have proven to be a practical solution for optical sources. In this paper, an approach to flexibly modulating micro-combs is proposed, and a simulation platform based on Si3N4 [...] Read more.
In recent years, micro-combs, due to their compact structure and high efficiency, have proven to be a practical solution for optical sources. In this paper, an approach to flexibly modulating micro-combs is proposed, and a simulation platform based on Si3N4 micro-combs with highly integrated, tunable, and reconfigurable features is built. By means of the Lugiato–Lefever equation model, the dynamic evolution process of micro-combs is analyzed, and a micro-ring resonator is designed with a free spectral range of 7.24 nm, an effective mode area of 1.0829µm2, and coherent comb lines spanning over 125 THz. Cascaded silicon nitride micro-ring filters are utilized to obtain reconfigurable modulation effects for Kerr-frequency micro-combs. Due to the significance of flexibly controlled optical sources with high-repetition rates and multiple channels for system-on-chip, our proposal has potential in photonic integrated circuit systems, such as high-density photonic computing and large-capacity optical communications, in the future. Full article
(This article belongs to the Special Issue Photonic Integrated Circuits: Techniques, Insights and Devices)
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