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Doctoral Candidate: Brhanu Kahsay Areaya

PhD_Candidate_13

Host Institution: Friedrich-Alexander-Universitaet Erlangen-Nuernberg - FAU

Project: Distributed sensing

About

Brhanu acquired his Master’s degree in Photonic Integrated Circuits, Sensors and NETWorks from Sant'Anna School of Advanced Studies-Pisa, Italy and Master’s degree in Electrical Engineering from Eindhoven University of Technology, the Netherlands through the Erasmus Mundus Joint Master’s degree scholarship. During his master’s studies he developed a strong interest in optical fiber communication technology, photonic integration , and worked on experimental characterization and modeling of InP based spot size converters for his master’s thesis. He received his bachelor's degree in Electrical Engineering (Electronics and Communication Engineering) from Bahir Dar University, Ethiopia. Prior and post to his master's degree, Brhanu worked as assistant lecturer and lecturer respectively in Mekelle Institute Technology-Mekelle University in Tigray, Ethiopia.

Project Objectives:

The main objective is to investigate methods for multipoint sensor systems based on Few-Mode fiber bragg gratings (FBG) and modal interference (MI) sensors in order to separate temperature and strain.

  • Implement optical frequency domain reflectometry (OFDR) as interrogation technique for Few-Mode- FBGs.
  • Interrogation of multiple combines Few-Mode FBG and MI sensors.
  • Combine FBG/MI-sensing with distributed Raman sensing.

Expected Results: 

1. Interrogation technique for combined Few-Mode FBG / MI interrogation

2. Significant reduction or elimination of cross sensitivity to temperature and strain on both FBG and MI sensor.

3. Use of FBG/MI sensor combination as reference of distributed Raman sensing. Approaches will be theoretically analysed, numerically modelled and experimentally investigated.