A quantitative analysis of the whispering-gallery-mode lasers in Er<SUP>3+</SUP>-doped silica glass microspheres towards integration in SOI slotted photonic crystal waveguides

作     者：Van An Nguyen Van Dai Pham Thi Hong Cam Hoang Huu Thang Le Thu Trang Hoang Quang Minh Ngo Van Hoi Pham 

作者机构：Vietnam Acad Sci & Technol Inst Mat Sci 18 Hoang Quoc Viet Hanoi Vietnam Grad Univ Sci & Technol Vietnam Acad Sci & Technol 18 Hoang Quoc Viet Hanoi Vietnam Univ Sci & Technol Hanoi Vietnam Acad Sci & Technol 18 Hoang Quoc Viet Hanoi Vietnam Directorate Stand Metrol & Qual Small & Medium Enterprise Dev & Support Ctr 1 8 Hoang Quoc Viet Hanoi Vietnam 

出 版 物：《OPTICS COMMUNICATIONS》 (光学通讯)

年 卷 期：2019年第440卷

页      面：14-20页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：Vietnam Academy of Science and Technology (VAST) [VAST03.05/18-19  QTFR01.02/18-19] 

主　　题：Microsphere Whispering-gallery-mode Lasers Photonic band gap Waveguides 

摘      要：Er3+-doped silica glass microspheres (mu S) with diameters of similar to 25-40 mu m were fabricated by using an electrical discharge method. The single-mode optical tapered fibers were used to guide the pumped laser into the mu S surface and collect the resulting lasing emission. The observation of whispering-gallery-mode (WGM) at telecom regime is quantified. With the presented scheme, the selective single-or multi-emitted modes of the mu S laser can be obtained by adjusting the coupling gap between the collection tapered fiber and the mu S surface. To overcome the collection tapered fiber s vibration at close range of the coupling gap, the guiding and coupling losses, while being compact enough to fit with complementary metal oxide semiconductor (CMOS) device, the integration of a mu S with silicon-on-insulator (SOI) slotted photonic crystal waveguides is proposed and modeled with the help of finite-difference time-domain (FDTD) simulations. The designed structures may find application for the promising photonic devices such as the ultrahigh sensitivity sensors, the lasing sources, and towards advanced quantum communications.