Optical Sensors and Sensing Congress

19 July 2021 – 23 July 2021
Optica Virtual Event - Pacific Daylight/Summer Time (UTC - 07:00)

Waveguide and Photonic Chemical Sensors (SF2D)

Presider: Claudio Oton, Scuola Superiore Sant Anna di Pisa
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8:00 - 8:30
(UTC - 07:00)

Bimodal Interferometric Photonic Sensors Based on Periodic Configurations (SF2D.1)
Presenter: Jaime Garcia-Ruperez, Universidad Politecnica de Valencia

The combination of bimodal interferometric configurations with periodic photonic structures as subwavelength grating (SWG) waveguides and photonic crystals (PhCs) allows developing novel sensing configurations with increased sensitivity and reduced footprint.

Authors:Jaime Garcia-Ruperez, Universidad Politecnica de Valencia / Luis Torrijos-Moran, Universidad Politecnica de Valencia

  Paper

8:30 - 8:45
(UTC - 07:00)

Design and fabrication of Ge-on-Si slot waveguide for mid-infrared optical gas sensor (SF2D.2)
Presenter: Jinha Lim, KAIST

Optical slot waveguide was demonstrated in the mid-infrared at 4.2 μm for gas sensing application on Germanium-on-silicon platform. 0.47 ppm of limit-of-detection for carbon dioxide can be achieved with enhanced confinement factor and propagation loss.

Authors:Jinha Lim, KAIST / Joonsup Shim, KAIST / SangHyeon Kim, KAIST

  Paper

8:45 - 9:00
(UTC - 07:00)

Investigation on TiOx/Ti/TiOx tri-layer film for integrated optical gas sensing applications (SF2D.3)
Presenter: Joonsup Shim, Korea Advanced Institute of Science and Technology

We systematically investigated the electrical characteristics of TiOx/Ti/TiOx tri-layer film for optical gas sensors on Ge-on-insulator platform. It was found that noise-equivalent-temperature-difference, which is strongly associated with limit-of-detection of gas sensors, could reach 14.56 mK.

Authors:Joonsup Shim, Korea Advanced Institute of Science and Technology / Jinha Lim, Korea Advanced Institute of Science and Technology / SangHyeon Kim, Korea Advanced Institute of Science and Technology

  Paper

9:00 - 9:15
(UTC - 07:00)

Monitoring Evaporation of Ethanol-Water Mixtures Using a Hollow Square Core Fiber (SF2D.4)
Presenter: Diana Pereira, University of Aveiro

An optical fiber sensor based on a hollow square core fiber is reported to measure the refractive indices of ethanol-water solutions and to monitor the evaporation profile in real-time.

Authors:Diana Pereira, University of Aveiro / Jörg Bierlich, Leibniz Institute of Photonic Technology IPHT / Jens Kobelke, Leibniz Institute of Photonic Technology IPHT / Katrin Wondraczek, Leibniz Institute of Photonic Technology IPHT / Marta Ferreira, University of Aveiro

  Paper

9:15 - 9:30
(UTC - 07:00)

Towards Remote Fiber-Based In Vivo Sensing of Glucose by Near Infrared Spectroscopy (SF2D.5)
Presenter: Silje Fuglerud, NTNU

A stable and low-noise system is required to measure small changes in biochemical constituents such as glucose. We discuss the requirements and limitations to achieve the necessary stability using a supercontinuum source.

Authors:Silje Fuglerud, NTNU / Dag Hjelme, NTNU

  Paper

9:30 - 9:45
(UTC - 07:00)

On-Chip Single-Device Chirality Detection Using Topological Insulator Phototransistor (SF2D.6)
Presenter: Shouyuan Huang, Purdue University

Conventional optical chirality detection requires multiple optical components. A topological insulator-based phototransistor is reported in which helical photoconductivity responds solely to circular polarization. Chirality and power density can be simultaneously measured under varied operating modes.

Authors:Shouyuan Huang, Purdue University / Xianfan Xu, Purdue University

  Paper

9:45 - 10:00
(UTC - 07:00)

Biosensor based on E-SMS Optical Fiber Structure for Detection of Anti BSA (SF2D.7)
Presenter: Brayan Patiño, Universidad Nacional de Colombia

In this work, etched singlemode-multimode-singlemode (E-SMS) optical fiber structures are evaluated through the implementation of anti-BSA/BSA immunoassay. By tracking the wavelength response, it is found that the E-SMS devices can detect the presence of antiBSA.

Authors:Brayan Patiño, Universidad Nacional de Colombia / Camilo Buriticá, Universidad EIA / Yamile Cardona Maya, Universidad Católica Luis Amigó / Yeison Montagut, Universidad EIA / Robinson Torres, Universidad EIA / Marisol Jaramillo, Universidad EIA / Rodrigo Acuna, Universidad Nacional de Colombia / Pedro Torres, Universidad Nacional de Colombia / Juan Botero-Cadavid, Universidad Nacional de Colombia

  Paper