1. Department of Electrical Engineering University of Malaya Kuala Lumpur Malaysia
2. Faculty of Electrical and Electronic Engineering Technology UniversitiTeknikal Malaysia Melaka Melaka Malaysia
3. Department of Engineering, Faculty of Vocational Studies Airlangga University Surabaya Indonesia
4. Fiber Optics and Photonics Division CSIR‐Central Glass and Ceramic Research Institute Kolkata India