1. School of Electronic Information; Qingdao University; Qingdao China
2. China Unioncom Weihai Branch; Weihai China
3. College of Physics, and Key Laboratory of Photonics Materials and Technology in University of Shandong, Laboratory of Fiber Materials and Modern Textile, the Growing Base for State Key Laboratory; Qingdao University; Qingdao China
4. Shandong Institute of Aerospace Electronics Technology; Yantai China
5. Goertek Inc.; Qingdao China