title: Enhanced fast light in microfiber ring resonator with a Sagnac loop reflector.
abstract: We fabricate a microfiber knot-type ring resonator with a Sagnac loop reflector, and control the light velocity using the device. In this structure, light is reflected by the Sagnac loop and passes through the ring resonator twice. Thus, it possesses doubled transmission and group delay comparing with the microfiber ring resonator without the Sagnac loop. We experimentally demonstrate pulse advancement in an under-coupled microfiber knot-type ring resonator with a Sagnac loop reflector. In the experiment, a maximum of approximately 25 ps pulse advancement was achieved for a 5-Gb/s RZ signal.
authors: State Key Lab of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai, 200240, China.
authors: Tao
authors: T
authors: Wang
authors: Xiaohui
authors: X
authors: Li
authors: Fangfei
authors: F
authors: Liu
authors: Weihong
authors: W
authors: Long
authors: Ziyang
authors: Z
authors: Zhang
authors: Limin
authors: L
authors: Tong
authors: Yikai
authors: Y
authors: Su