Design and Evaluation of a Twin-Core Photonic Crystal Fiber Sensor for Human Blood Biomolecules 

• Authors
• Authors and affiliations

ABSTRACT

A twin-core photonic crystal fiber (TC-PCF) sensor is proposed featuring a rectangular analyte channel, designed for blood component detection. The cladding area of this sensor incorporates rectangular air-holes, with silica serving as the substrate material. Operating within a wavelength range of 2 µm to 3 µm. The sensor’s modeling and simulation is conducted by using COMSOL Multiphysics software, while schematic curves were plotted using Origin software. This TC-PCF sensor demonstrates remarkable sensitivity, reaching 1641.2 nm/RIU for white blood cells and 2732.638 nm/RIU for red blood cells. Offering a compact and advanced solution, this sensor addresses challenges commonly encountered with traditional blood biomolecule sensors. Its cost-effectiveness and ease of fabrication may lead the proposed sensor structure for promising future applications.

Significance of the study:

The development of the TC-PCF sensor introduces a highly sensitive, cost-effective, and straightforward fabrication method for detecting blood components. The sensor achieves impressive sensitivity levels, significantly improving over traditional blood biomolecule sensors. Its design, incorporating silica and rectangular air-holes, ensures reliable performance, making it a promising candidate for future applications in medical diagnostics and health monitoring, enhancing the detection capabilities of blood biomolecules.

Summary of the study:

This study presents the design and evaluation of a twin-core photonic crystal fiber (TC-PCF) sensor with a rectangular analyte channel for detecting blood biomolecules. Using silica as the substrate and rectangular air-holes in the cladding, the sensor operates in the 2 µm to 3 µm wavelength range. Simulations results show high sensitivity, achieving 1641.2 nm/RIU for white blood cells and 2732.638 nm/RIU for red blood cells. This cost-effective and easy-to-fabricate sensor offers a compact solution for blood biomolecule detection.