1. Department of Electrical Engineering (EE), and IRC-CSS, Optical Communication and Sensors Laboratory (OCSL), King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, Saudi Arabia
2. Department of Physics, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, Saudi Arabia
3. School of Engineering and Built Environment, Anglia Ruskin University, Chelmsford, U.K.