The multiple physical quantity sensor based on cylindrical photonic crystals with XOR logic gates.

Area of Science:

• Photonics
• Nanotechnology
• Sensor Technology

Background:

• Photonic crystals offer unique light manipulation properties.
• Terahertz (THz) technology enables non-ionizing spectroscopy and sensing.
• Multi-functional sensors are crucial for advanced detection systems.

Purpose of the Study:

• To propose a multi-scale sensor device with logic operation capabilities.
• To achieve simultaneous detection of refractive index (RI) and magnetic field.
• To explore the application of one-dimensional photonic crystals in the THz range.

Main Methods:

• Utilizing one-dimensional cylindrical photonic crystals.
• Modulating terahertz absorption peaks with an external magnetic field.
• Implementing XOR logic gates using Indium Antimonide (InSb) layers.

Main Results:

• Sharp terahertz absorption peaks (APs) were observed under magnetic field modulation.
• XOR logic gate functionality was achieved by manipulating APs.
• The device demonstrated excellent quality factors (6879.88 and 6943.65).
• High sensitivity and low detection limits were achieved for both RI and magnetic field sensing.

Conclusions:

• The proposed device integrates sensing and logic operations in the THz domain.
• It offers a novel approach for multi-scale measurements with high performance.
• The sensor shows significant potential for advanced applications in various fields.