1. Department of Electronics Engineering, Optical Fiber Sensor Laboratory, Indian Institute of Technology (Indian School of Mines) Dhanbad, Dhanbad, Jharkhand, India
2. Department of Electronics Engineering, Indian Institute of Technology (Indian School of Mines) Dhanbad, Dhanbad, Jharkhand, India
3. Advanced Materials and Sensors Division, Central Scientific Instruments Organisation (CSIO), Chandigarh, India
4. Shandong Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Technology, Liaocheng University, Liaocheng, China