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Photonics
Special Issues
Silicon-Based Integrated Optics: From Design to Applications
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Silicon-Based Integrated Optics: From Design to Applications

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

Deadline for manuscript submissions: 20 May 2025 | Viewed by 4657

Special Issue Editor

Prof. Dr. Mingyu Li

E-Mail Website
Guest Editor
Department of Optical Engineering, School of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun 130022, China
Interests: optical waveguide sensor; integrated optics; optoelectronic devices; thin film optics

Special Issue Information

Dear Colleagues,

Photonics welcomes your submission to a Special Issue on silicon-based integrated optics: From design to applications.

Silicon-based integrated optics is a silicon platform from which photonic-integrated circuits can be made. It uses silicon wafers as the semiconductor substrate material and can be manufactured by using established foundry due to compatibility with CMOS (complementary metal oxide semiconductor) fabrication. Not only silicon but also silicon nitride can serve as core materials for silicon-based integrated optics. This makes it possible to transport the light in these waveguides over a wider wavelength, ranging from infrared light to visible light. Various integration techniques exist to integrate lasers, modulators, and photodetectors in silicon-based wafers to realize optical components with different functions. Silicon-based integrated optics with electronic integrated circuits (ICs) in one chip can provide a complete solution for applications of optical communication, sensors, biomedical sciences, automobiles, astronomy, aerospace, augmented reality (AR), virtual reality (VR), and artificial intelligence (AI).

Topics of interest include, but are not limited to, the following:

  • Active and passive integrated photonic devices on silicon-based platforms.
  • Fabrication and characterization technologies for silicon-based integrated optics.
  • Device theory, modelling, and design: machine learning and reverse engineering.
  • Applications of silicon-based integrated optics devices.
  • Silicon-based integrated nonlinear and quantum optics.
  • New materials on silicon platforms for integrated optics.

Prof. Dr. Mingyu Li
Guest Editor

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

  • silicon photonics
  • photonic integration
  • integrated circuits
  • CMOS

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

Published Papers (4 papers)

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Research

26 pages, 3630 KiB  
Article
Tailoring Spectral Response of Grating-Assisted Co-Directional Couplers with Weighting Techniques and Rational Transfer Functions: Theory and Experiment
by Anatole Lupu
Photonics 2025, 12(1), 73; https://doi.org/10.3390/photonics12010073 - 15 Jan 2025
Viewed by 649
Abstract
This work addresses the tailoring spectral response of grating-assisted co-directional couplers (GADCs) in the context of wavelength filtering for fiber-to-the-home (FTTH) applications. Design methods for spectral response engineering by means of coupling profile apodization-type weighting techniques and also more advanced rational transfer functions [...] Read more.
This work addresses the tailoring spectral response of grating-assisted co-directional couplers (GADCs) in the context of wavelength filtering for fiber-to-the-home (FTTH) applications. Design methods for spectral response engineering by means of coupling profile apodization-type weighting techniques and also more advanced rational transfer functions fitting a predefined spectral window template are presented. Modeling results based on coupled mode theory are then applied for the design and experimental fabrication of InGaAsP/InP GADCs targeting 1.3+/1.3− µm diplexer application in FTTH access networks. The experimental results are found to be in good agreement with the modeling predictions. The design tools presented are quite general and can be easily adapted to other technology platforms, such as silicon photonics for the use of GADCs as add-drop wavelength division multiplexers. The field of parity–time symmetry is another avenue where these types of gain–loss-assisted GADCs as active components are of interest for switching applications, and the design methods presented here may find utility. Full article
(This article belongs to the Special Issue Silicon-Based Integrated Optics: From Design to Applications)
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11 pages, 4746 KiB  
Article
Second-Order Microring Filter with Large Free-Spectral-Range and Wavelength-Tunable-Range over 50 nm
by Jiamei Gu, Shuojian Zhang, Qiongchan Shao, Mingyu Li, Xiao Ma and Jian-Jun He
Photonics 2024, 11(9), 870; https://doi.org/10.3390/photonics11090870 - 16 Sep 2024
Viewed by 1112
Abstract
The high-order microring filter has been proposed for a larger free spectral range (FSR) compared with the single microring filter; therefore, it has great potential to be used in wavelength division multiplexing (WDM) systems. In this article, we have designed and fabricated a [...] Read more.
The high-order microring filter has been proposed for a larger free spectral range (FSR) compared with the single microring filter; therefore, it has great potential to be used in wavelength division multiplexing (WDM) systems. In this article, we have designed and fabricated a second-order microring filter made up of two rings connected in series with two Ti thermal heaters deposited above them. The large FSR of 56.8 nm is obtained by decreasing the difference of the radii between the two series rings, achieving similar FSRs to that of higher-order filters but with a simpler and more compact design. The average electrical tuning efficiencies of the two heaters are 0.186 nm/mW and 0.207 nm/mW, and the center wavelength of the filter can be tuned over the entire FSR with an applied electrical power of less than 40 mW. Full article
(This article belongs to the Special Issue Silicon-Based Integrated Optics: From Design to Applications)
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20 pages, 14645 KiB  
Article
Research on Electro-Optic Hybrid Multidigit Digital Multiplier Based on Surface Plasmon Polariton Technology
by Zhixun Liang, Yunying Shi, Yunfei Yi, Zhirong Wei and Peng Tang
Photonics 2024, 11(9), 785; https://doi.org/10.3390/photonics11090785 - 23 Aug 2024
Viewed by 853
Abstract
Digital multipliers are the core components of digital computers, and improving the speed of transistor electronic computers during computation has almost reached its limit, with high power consumption. In this paper, we proposed an electro-optic hybrid multidigit digital multiplier based on SPP technology, [...] Read more.
Digital multipliers are the core components of digital computers, and improving the speed of transistor electronic computers during computation has almost reached its limit, with high power consumption. In this paper, we proposed an electro-optic hybrid multidigit digital multiplier based on SPP technology, which has the advantages of high speed and low power consumption in optical logic, as well as flexible electrical operation and easy storage. The electro-optic hybrid digital multiplier mainly consists of an electrical AND logic gate, an electro-optic hybrid half adder, and an electro-optic hybrid full adder. The optical logic unit is controlled by activated ITO materials to achieve optical-domain operations, and then the multiplication calculation results are converted into electrical signals through photoelectric conversion. The experimental results show that when the scale is 64 × 64 bits, compared with transistor digital multiplication, the energy consumption is reduced by 48.8%; the speed is increased by a factor of 28; and the volume of the electro-optic hybrid digital multiplier device is larger than that of the transistor multiplier, saving 59.9% of the area. For optical transmission loss, a single adder outputs 0.31 dB at different device scales, while the carry output continuously increases with device scale. At scales of 8 × 8 bits, 16 × 16 bits, and 64 × 64 bits, the insertion losses at the sum output ports are 1.03 dB/μm and 1.87 dB/μm, respectively. Full article
(This article belongs to the Special Issue Silicon-Based Integrated Optics: From Design to Applications)
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18 pages, 5517 KiB  
Article
FMCW Laser Ranging System Based on SiON Waveguides and IQ Demodulation Technology
by Leifu Zhou, Lijuan Zhang, Yanqing Qiu, Tingting Lang, Xiao Ma, Ting Chen and Lei Wang
Photonics 2024, 11(8), 765; https://doi.org/10.3390/photonics11080765 - 15 Aug 2024
Cited by 1 | Viewed by 1400
Abstract
This study introduces the design of a nonlinear frequency-modulated continuous wave (FMCW) laser ranging system. In contrast to the commonly used triangular wave linear modulation, this study utilizes sinusoidal wave modulation. The frequency information of the original sinusoidal frequency-modulated signal is extracted using [...] Read more.
This study introduces the design of a nonlinear frequency-modulated continuous wave (FMCW) laser ranging system. In contrast to the commonly used triangular wave linear modulation, this study utilizes sinusoidal wave modulation. The frequency information of the original sinusoidal frequency-modulated signal is extracted using an on-chip interferometer based on SiON waveguides and IQ demodulation technology. After fitting the measured interference signal at equal frequency intervals, the corresponding distance information is derived using the fast Fourier transform (FFT). The principles underlying this method are thoroughly analyzed and derived, with its accuracy confirmed through experimental validation. Full article
(This article belongs to the Special Issue Silicon-Based Integrated Optics: From Design to Applications)
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