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Negative dispersive temperature sensor based on H-shaped photonic crystal fiber filled with air and ethanol

NEHA KUMARI1,* , SHIPRA1, SHAHIRUDDIN2

Affiliation

  1. Birla Institute of Technology, Patna Campus, Patna 800014, Department of Electronics and Communication Engineering, India
  2. Bakhtiyarpur College of Engineering, Bakhtiyarpur 803212, Department of Electronics and Communication Engineering, India

Abstract

Two H-shaped photonic crystal fiber (H-shaped PCF) having circular holes whose inner ring is filled with air and ethanol respectively is proposed for sensing of temperature. It is suitable for detecting birefringence, negative dispersion, temperature and temperature sensitivity by finite element method. Simulation results are analyzed by Rsoft FEMSIM software which shows that sensor has good linearity. The sensitivity of H-shaped fiber after filling air is -0.77463 nm/oC and ethanol is -0.69434 nm/oC at wavelength of 1.55 μm. High value of birefringence 6.057 × 10-2 is obtained by the filling of ethanol at 1.55 μm. The proposed sensor can be used in many applications in food industry and medical testing.

Keywords

Photonic crystal fiber, Temperature sensor, Finite element method, Sensitivity, Temperature, Dispersion.

Citation

NEHA KUMARI, SHIPRA, SHAHIRUDDIN, Negative dispersive temperature sensor based on H-shaped photonic crystal fiber filled with air and ethanol, Optoelectronics and Advanced Materials - Rapid Communications, 20, 5-6, May-June 2026, pp.212-217 (2026).

Submitted at: Nov. 20, 2025

Accepted at: June 2, 2026