Discussion of Ms.C. Student Batool Hashim in the laser and optoelectronics engineering department on Tuesday 24-6-2025.

about thesis named

 Design and fabrication of Hollow-core photonics crystal fiber for different edible oils 

This thesis explores the design and evaluation of a sensor for edible oils using hollow-core photonic crystal fiber (HC-PCF) with a 650 nm laser. The study includes both practical experiments and theoretical modeling.

Experimentally, the sensor was tested with seven types of oils, showing distinct wavelength shifts for each, indicating its ability to differentiate between them. It also detected changes due to temperature variations in sunflower and corn oils, and degradation from repeated heating in sunflower oil.

Theoretically, a similar sensor was modeled using COMSOL Multiphysics. Optical parameters such as confinement loss, effective refractive index, and relative sensitivity were calculated. Sesame oil showed the highest sensitivity due to its high refractive index

The student get very good degree