Related Experiment Video
Updated: Mar 19, 2026
07:28
Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor
Published on: August 30, 2012
11.2K
Highly compact refractive index sensor based on stripe waveguides for lab-on-a-chip sensing applications
Chamanei Perera1, Kristy Vernon1, Elliot Cheng2
1Science and Engineering Faculty, Queensland University of Technology, Brisbane 4001, Queensland, Australia.
Beilstein Journal of Nanotechnology
|June 24, 2016
Summary
We developed a new, compact refractive index sensor using coupled nanoscale stripe waveguides. This sensor offers a high resolution of 6 × 10(-4) RIU for sensitive, label-free analysis.
Area of Science:
- Photonics
- Nanotechnology
- Sensor Technology
Background:
- Refractive index sensing is crucial for various analytical applications.
- Existing sensors may lack compactness or sensitivity.
- Nanoscale optical devices offer potential for enhanced sensing capabilities.
Purpose of the Study:
- To design and experimentally realize a novel, compact refractive index sensor.
- To investigate the sensor's performance at a single operating wavelength.
- To demonstrate the sensor's suitability for label-free refractive index analysis.
Main Methods:
- Utilizing the coupling phenomenon between three nanoscale stripe waveguides.
- Fabricating a compact sensor architecture.
- Conducting experimental measurements to assess sensor response and resolution.
Main Results:
- The sensor demonstrated a linear response to changes in refractive index.
- Achieved a resolution of 6 × 10(-4) RIU for a 1% change in relative output intensity.
- The device operates effectively at a single wavelength.
Conclusions:
- The developed sensor is highly compact and operates at a single wavelength.
- The sensor provides a sensitive and linear response for refractive index measurements.
- This technology is beneficial for highly compact, label-free, and sensitive refractive index analysis.
