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Updated: May 25, 2026

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

Published on: August 30, 2012

Terahertz pipe-waveguide-based directional couplers.

Jen-Tang Lu¹, Chih-Hsien Lai, Tzu-Fang Tseng

¹Department of Electrical Engineering and Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei, Taiwan.

|January 26, 2012

Summary

This summary is machine-generated.

We demonstrated a terahertz (THz) leaky mode directional coupler using square pipe waveguides. This device shows optimal performance in the minimal-attenuation wavelength range for future THz technologies.

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Area of Science:

Optics and Photonics
Terahertz (THz) Technology
Waveguide Engineering

Background:

Terahertz (THz) technology is crucial for emerging applications.
Directional couplers are fundamental components in photonic integrated circuits.
Efficient THz waveguide structures are needed to minimize signal loss.

Purpose of the Study:

To experimentally demonstrate a novel terahertz (THz) leaky mode directional coupler.
To investigate the coupling efficiency of the proposed device.
To explore the impact of various parameters on coupler performance.

Main Methods:

Fabrication and experimental testing of a directional coupler based on two coupled square pipe waveguides.
Analysis of coupling efficiency across different frequencies and polarizations.
Investigation of the influence of core dimensions on device performance.

Main Results:

Successful experimental demonstration of a THz leaky mode directional coupler.
Coupling efficiency is dependent on frequency, polarization, and waveguide core size.
Optimal performance achieved in the minimal-attenuation wavelength regime for THz transmission.

Conclusions:

The demonstrated square pipe waveguide directional coupler is a viable component for future THz systems.
Understanding parameter dependencies is key to optimizing THz coupler design.
Operating within the minimal-attenuation window is critical for efficient THz signal routing.