1. Department of Electrical Engineering, National Sun Yat-Sen University, Kaoshiung, Taiwan
2. Institute of Undersea Technology, National Sun Yat-Sen University, Kaohsiung, Taiwan
3. Department of Photonics, National Sun Yat-Sen University, Kaohsiung, Taiwan
4. Department of Electronics Engineering, Technological University of the Philippines, Manila, Philippines
5. Department of Electronics Engineering, Batangas State University- The National Engineering University, Batangas, Philippines