1. Department of Electronic and Electrical Engineering, Ewha Womans University, Seoul, South Korea
2. Graduate Program in Smart Factory, Ewha Womans University, Seoul, South Korea
3. SCMEMS, Incheon, South Korea
4. IBULe Photonics, Incheon, South Korea
5. Department of Electronic and Electrical Engineering, Graduate Program in Smart Factory, Ewha Womans University, Seoul, South Korea