Hafeez Hafeez Ul Hassan, MSc in Photonics from Freidrich Schiller University, Jena, Germany, is the PhD candidate recruited by Medtronic under the project: “POF based Glucose Sensor Incorporating Grating Wavelength Filters”. Hafeez has more than 2 years of professional experience in the field of optics both in academia and R&D. His career interests are fiber optics, fiber Bragg gratings and their applications.