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Photonics
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Silicon Photonics Devices and Integrated Circuits
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Silicon Photonics Devices and Integrated Circuits

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

Deadline for manuscript submissions: 15 September 2024 | Viewed by 2720

Special Issue Editors

Dr. Duan Huang

E-Mail Website
Guest Editor
School of Computer Science and Engineering, Central South University, Changsha 410083, China
Interests: integrated photonics; optoelectronics integrated circuit; silicon photonics; quantum information processing; quantum optics; optical computing
Dr. Wei Li

E-Mail Website
Guest Editor
Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China
Interests: quantum cryptography; integrated photonics circuits

Special Issue Information

Dear Colleagues,

Silicon-based optical chips are based on silicon and silicon-based substrate materials and combined with CMOS technology. Compared with traditional semiconductor chips, silicon-based optical chips have the advantages of higher operation efficiency and information transmission, lower energy consumption, and lower amounts of heat generation during operation. In recent years, silicon photonic devices have shown great potential in high-performance optical computing, quantum information processing, optical neural networks, and other fields. These are regarded as one of the promising solutions for low-cost and high-performance chip-based photonic devices and systems. Therefore, silicon photonics devices and integrated circuits have been attracting a great deal of attention in recent years.

This Special Issue aims to be a forum for the presentation of the latest developments in basic and applied research in the field of silicon photonics devices and integrated circuits. We welcome your work in any form, including reviews, articles, and communications. Topics of interest include, but are not limited to, the following:

  • Design and development of silicon photonic devices;
  • Integrated modulators and detectors;
  • Passive wavelength/polarization controlling devices, multimode devices, and waveguides;
  • Integrated optical neural network;
  • High-speed optical communication and computing;
  • Quantum optics;
  • Quantum source;
  • Quantum information processing;
  • Quantum communication;
  • Inverse design in integrated photonics;
  • Design of integrated microwave photonic devices;
  • On-chip optical interconnection;
  • Silicon photonics;
  • Programmable optical devices for computing.

Dr. Duan Huang
Dr. Wei Li
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.

Published Papers (3 papers)

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Research

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11 pages, 875 KiB  
Article
Silicon Nitride Bent Asymmetric Coupled Waveguides with Partial Euler Bends
by Pedro Chamorro-Posada
Photonics 2024, 11(3), 218; https://doi.org/10.3390/photonics11030218 - 28 Feb 2024
Viewed by 883
Abstract
Waveguide geometries combining bent asymmetric coupled structures and adiabatic transitions shaped as partial Euler bends are put forward and theoretically analyzed in this work. Designs aiming to reduce the radiation loss, with application in curved waveguide sections and Q-enhanced microresonators, and polarization selection [...] Read more.
Waveguide geometries combining bent asymmetric coupled structures and adiabatic transitions shaped as partial Euler bends are put forward and theoretically analyzed in this work. Designs aiming to reduce the radiation loss, with application in curved waveguide sections and Q-enhanced microresonators, and polarization selection geometries, both for the silicon nitride platform, are studied using highly accurate numerical techniques. Full article
(This article belongs to the Special Issue Silicon Photonics Devices and Integrated Circuits)
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Review

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19 pages, 5709 KiB  
Review
Silicon-Nanowire-Based 100-GHz-Spaced 16λ DWDM, 800-GHz-Spaced 8λ LR-8, and 20-nm-Spaced 4λ CWDM Optical Demultiplexers for High-Density Interconnects in Datacenters
by Seok-Hwan Jeong
Photonics 2024, 11(4), 336; https://doi.org/10.3390/photonics11040336 - 5 Apr 2024
Viewed by 610
Abstract
Several types of silicon-nanowire-based optical demultiplexers (DeMUXs) for use in short-reach targeted datacenter applications were proposed and their spectral responses were experimentally verified. First, a novel 100-GHz-spaced 16λ polarization-diversified optical DeMUX consisting of 2λ delayed interferometer (DI) type interleaver and 8λ arrayed waveguide [...] Read more.
Several types of silicon-nanowire-based optical demultiplexers (DeMUXs) for use in short-reach targeted datacenter applications were proposed and their spectral responses were experimentally verified. First, a novel 100-GHz-spaced 16λ polarization-diversified optical DeMUX consisting of 2λ delayed interferometer (DI) type interleaver and 8λ arrayed waveguide gratings will be discussed in the spectral regimes of C-band, together with experimental characterizations showing static and dynamic spectral properties. Second, a novel 800-GHz-spaced 8λ optical DeMUX was targeted for use in LR (long reach) 400 Gbps Ethernet applications. Based on multiple cascade-connected DIs, by integrating the extra band elimination cutting area, discontinuous filtering response was analytically identified with a flat-topped spectral window and a low spectral noise of <−20 dB within an entire LR-8 operating wavelength range. Finally, a 20-nm-spaced 4λ coarse wavelength division multiplexing (CWDM)-targeted optical DeMUX based on polarization diversity was experimentally verified. The measurement results showed a low excessive loss of 1.0 dB and a polarization-dependent loss of 1.0 dB, prominently reducing spectral noises from neighboring channels by less than −15 dB. Moreover, TM-mode elimination filters were theoretically analyzed and experimentally confirmed to minimize unwanted TM-mode-oriented polarization noises that were generated from the polarization-handling device. The TM-mode elimination filters functioned to reduce polarization noises to much lower than −20 dB across the entire CWDM operating window. Full article
(This article belongs to the Special Issue Silicon Photonics Devices and Integrated Circuits)
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19 pages, 2830 KiB  
Review
Dielectric Waveguide-Based Sensors with Enhanced Evanescent Field: Unveiling the Dynamic Interaction with the Ambient Medium for Biosensing and Gas-Sensing Applications—A Review
by Muhammad A. Butt
Photonics 2024, 11(3), 198; https://doi.org/10.3390/photonics11030198 - 23 Feb 2024
Cited by 1 | Viewed by 924
Abstract
Photonic sensors utilize light–matter interaction to detect physical parameters accurately and efficiently. They exploit the interaction between photons and matter, with light propagating through an optical waveguide, creating an evanescent field beyond its surface. This field interacts with the surrounding medium, enabling the [...] Read more.
Photonic sensors utilize light–matter interaction to detect physical parameters accurately and efficiently. They exploit the interaction between photons and matter, with light propagating through an optical waveguide, creating an evanescent field beyond its surface. This field interacts with the surrounding medium, enabling the sensitive detection of changes in the refractive index or nearby substances. By modulating light properties like intensity, wavelength, or phase, these sensors detect target substances or environmental changes. Advancements in this technology enhance sensitivity, selectivity, and miniaturization, making photonic sensors invaluable across industries. Their ability to facilitate sensitive, non-intrusive, and remote monitoring fosters the development of smart, connected systems. This overview delves into the material platforms and waveguide structures crucial for developing highly sensitive photonic devices tailored for gas and biosensing applications. It is emphasized that both the material platform and waveguide geometry significantly impact the sensitivity of these devices. For instance, utilizing a slot waveguide geometry on silicon-on-insulator substrates not only enhances sensitivity but also reduces the device’s footprint. This configuration proves particularly promising for applications in biosensing and gas sensing due to its superior performance characteristics. Full article
(This article belongs to the Special Issue Silicon Photonics Devices and Integrated Circuits)
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