摘要
A novel microfiber nested ring with knot resonator(MNRKR)is proposed and demonstrated.A mathematical model to describe the principle of the tunable feature of MNRKR is illustrated.The improvement of the output spectra is achieved by changing the transmission coefficient and the length of the feedback waveguide.We theoretically and experimentally demonstrate that the free spectral range(FSR)can be doubled by constructive interference without reducing the circumference of microring.Thus,this all-fiber optical device has the potential for achieving a large measuring range of the optical sensor.
作者
GUO Shi-liang
LI Xin
XUE Han
郭士亮;李欣;薛寒(Institute of Electrical Engineering,Yanshan University,Qinhuangdao 066004,China;Control and Simulation Centre,Harbin Institute of Technology,Harbin 150080,China)
基金
the National Science Foundation of China(No.61405172)
the Scientific and Technological Research Projects of Colleges and Universities in Hebei Province(No.QN2019061)
the Qinhuangdao Scientific and Technology Research and Development Project(No.201805A009).
