Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Planar p-n Junction Engineering toward Reconfigurable Organic Synaptic Transistors for High-Accuracy Neuromorphic Recognition.

Small (Weinheim an der Bergstrasse, Germany)·2025
Same author

Physics-informed recurrent neural network for time dynamics in optical resonances.

Nature computational science·2024
Same author

Comparison of grain cadmium and arsenic concentration between main and ratoon crop in rice ratooning system.

Food chemistry·2022
Same author

InP high power monolithically integrated widely tunable laser and SOA array for hybrid integration.

Optics express·2021
Same author

Design of a broadband Ge<sub>1-x</sub>Si<sub>x</sub> electro-absorption modulator based on the Franz-Keldysh effect with thermal tuning.

Optics express·2020
Same author

Effect of Yiqi Huayu Jiedu decoction on stages II and III gastric cancer: A multicenter, prospective, cohort study.

Medicine·2019

Related Experiment Video

Updated: Sep 11, 2025

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor
07:28

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

Published on: August 30, 2012

10.9K

Linear and passive silicon-on-insulator refractive index sensor utilizing Bragg grating-assisted Michelson

John O Gerguis, Minghao Qi

    Optics Express
    |August 13, 2025
    PubMed
    Summary

    This study introduces a novel silicon-on-insulator refractive index sensor that provides a linear response for monitoring gas concentrations. Its design ensures a constant figure of merit, enabling reliable performance across various refractive index changes.

    More Related Videos

    A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
    09:03

    A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

    Published on: January 7, 2019

    7.3K
    Implementation of a Reference Interferometer for Nanodetection
    16:11

    Implementation of a Reference Interferometer for Nanodetection

    Published on: April 26, 2014

    9.5K

    Related Experiment Videos

    Last Updated: Sep 11, 2025

    Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor
    07:28

    Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

    Published on: August 30, 2012

    10.9K
    A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
    09:03

    A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

    Published on: January 7, 2019

    7.3K
    Implementation of a Reference Interferometer for Nanodetection
    16:11

    Implementation of a Reference Interferometer for Nanodetection

    Published on: April 26, 2014

    9.5K

    Area of Science:

    • Photonics and Sensing Technology
    • Integrated Optics
    • Materials Science

    Background:

    • Conventional refractive index (RI) sensors often exhibit nonlinear responses, limiting their utility for precise gas concentration monitoring.
    • The need for robust, linear sensors is critical in applications requiring consistent performance across a wide range of RI variations.

    Purpose of the Study:

    • To design a linear, passive refractive index sensor using silicon-on-insulator technology.
    • To achieve a constant figure of merit (FOM) for reliable gas sensing across diverse RI changes.
    • To enable simplified fabrication for mass production.

    Main Methods:

    • Utilized a Michelson interferometer integrated with two long Bragg gratings to linearize the sensor response.
    • Incorporated slotted Bragg gratings in sensing arms to enhance light-medium interaction.
    • Employed finite-difference eigenmode (FDE) and finite-difference time-domain (FDTD) simulations for design validation.
    • Fabricated and measured Bragg grating devices and Michelson interferometers to compare with simulation results.

    Main Results:

    • Achieved a constant figure of merit (FOM) of approximately 113 RIU⁻¹.
    • Demonstrated a waveguide sensitivity of ~0.72 with specific design parameters (80 nm slot width, 0.01 index modulation depth).
    • Validated the sensor's functionality through experimental measurements and simulations, confirming design principles.

    Conclusions:

    • The proposed linear RI sensor design offers a constant FOM, crucial for accurate gas concentration monitoring.
    • The sensor's design allows for direct air exposure, simplifying fabrication and enabling low-cost production.
    • The technology is well-suited for mass production due to its simplified fabrication process and robust performance.