Gan Xuetao, Wang Yadong, Zhang Fanlu, Zhao Chenyang, Jiang Biqiang, Fang Liang, Li Dongying, Wu Hao, Ren Zhaoyu, Zhao Jianlin
Opt Lett. 2016 Feb 1;41(3):603-6. doi: 10.1364/OL.41.000603.
We report a graphene-assisted all-optical control of a fiber Bragg grating (FBG), which enables in-fiber optical bistability and switching. With an optical pump, a micro-FBG wrapped by graphene evolves into chirped and phase-shifted FBGs, whose characteristic wavelengths and bandwidths could be controlled by the pump power. Optical bistability and multistability are achieved in the controlled FBG based on a shifted Bragg reflection or Fabry-Perot-type resonance, which allow the implementation of optical switching with an extinction ratio exceeding 20 dB and a response time in tens of milliseconds.
我们报道了一种基于石墨烯辅助的光纤布拉格光栅（FBG）全光控制方法，该方法能够实现光纤内的光学双稳态和开关功能。通过光泵浦，包裹有石墨烯的微FBG会演变成啁啾和相移FBG，其特征波长和带宽可由泵浦功率控制。基于移位布拉格反射或法布里 - 珀罗型共振，在受控FBG中实现了光学双稳态和多稳态，这使得能够实现消光比超过20 dB且响应时间为几十毫秒的光开关。
