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Photonic Integrated Circuits for Spectroscopic Sensing

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Optical Sensors".

Deadline for manuscript submissions: closed (30 September 2021) | Viewed by 5090

Special Issue Editors


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Guest Editor
Phutung Research Institute, 44611 Kathmandu, Nepal
Interests: spectroscopy; nanophotonics; imaging; science and technology policy in developing countries

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Guest Editor
1. Photonics Research Group, INTEC, Ghent University-IMEC, Technologiepark-Zwijnaarde 15, 9052 Ghent, Belgium
2. Center for Nano- and Biophotonics, Ghent University, Technologiepark-Zwijnaarde 15, 9052 Ghent, Belgium
Interests: silicon photonics; photonic integrated circuits; III-V on silicon integration; PIC-enabled sensing and medical devices

Special Issue Information

Dear Colleagues,

Photonic integrated circuits (PICs) fabricated with materials such as silicon, III-V semiconductors, silicon nitride, tantalum pentoxide, titanium dioxide, etc. are being investigated for spectroscopic sensing from visible to infrared wavelengths. These platforms are explored for applications ranging from Raman spectroscopy, fluorescence spectroscopy, and absorption spectroscopy to refractive index sensing via interferometric methods. The field has been progressing rapidly in recent years, and excellent performance compared to the traditional spectroscopic methods has been reported, along with the promise of very compact and low-cost solutions.

Recent developments in PIC technologies have also raised the prospect of complete PIC-based system implementations, where passive and active photonic components and peripheral electronic components are all integrated together, thereby reducing the size, complexity, and cost of the system, while enhancing the system’s performance.

This Special Issue aims to publish high-quality manuscripts reporting the latest original research or review articles in, but not limited to, the following areas:

  • Principles relevant to PICs for spectroscopic sensing;
  • Materials relevant to PICs for spectroscopic sensing;
  • Integrated photonic devices enabling spectroscopic sensing;
  • Integrated waveguide technologies for spectroscopic sensing;
  • Emerging applications in context of PICs for spectroscopic sensing;
  • Raman spectroscopy using PICs;
  • Absorption spectroscopy using PICs;
  • Dual-comb spectroscopy using PICs;
  • Fluorescence spectroscopy using PICs;
  • Non-linear spectroscopy using PICs;
  • Refractive index sensing using spectroscopic readout methods and PICs;
  • Evanescent spectroscopic sensors;
  • VIS, NIR, and mid-IR spectroscopic sensors using PICs.

Dr. Ashim Dhakal
Prof. Roel Baets
Guest Editors

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Published Papers (1 paper)

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Research

12 pages, 3432 KiB  
Article
Design and Simulation Investigation of Si3N4 Photonics Circuits for Wideband On-Chip Optical Gas Sensing around 2 µm Optical Wavelength
by Natnicha Koompai, Papichaya Chaisakul, Pichet Limsuwan, Xavier Le Roux, Laurent Vivien and Delphine Marris-Morini
Sensors 2021, 21(7), 2513; https://doi.org/10.3390/s21072513 - 3 Apr 2021
Cited by 6 | Viewed by 3520
Abstract
We theoretically explore the potential of Si3N4 on SiO2 waveguide platform toward a wideband spectroscopic detection around the optical wavelength of 2 μm. The design of Si3N4 on SiO2 waveguide architectures consisting of a Si [...] Read more.
We theoretically explore the potential of Si3N4 on SiO2 waveguide platform toward a wideband spectroscopic detection around the optical wavelength of 2 μm. The design of Si3N4 on SiO2 waveguide architectures consisting of a Si3N4 slot waveguide for a wideband on-chip spectroscopic sensing around 2 μm, and a Si3N4 multi-mode interferometer (MMI)-based coupler for light coupling from classical strip waveguide into the identified Si3N4 slot waveguides over a wide spectral range are investigated. We found that a Si3N4 on SiO2 slot waveguide structure can be designed for using as optical interaction part over a spectral range of interest, and the MMI structure can be used to enable broadband optical coupling from a strip to the slot waveguide for wideband multi-gas on-chip spectroscopic sensing. Reasons for the operating spectral range of the system are discussed. Full article
(This article belongs to the Special Issue Photonic Integrated Circuits for Spectroscopic Sensing)
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