Highly sensitive all-optical control of light in WS2 coated microfiber knot resonator
Highly sensitive all-optical control of light in WS2 coated microfiber knot resonator
复制标题
WS2 涂层微纤维结谐振器中的高灵敏度全光学光控制
DOI：
10.1364/oe.26.027650
复制
发表时间：
2018-10-15
期刊：
影响因子：
3.8
通讯作者：
Chen, Zhe
中科院分区：
文献类型：
--
作者：
Chen, Guowei;Zhang, Zijian;Chen, Zhe
全光学光控光功能是在层状二硫化钨 (WS2) 纳米片涂层微纤维结谐振器 (MKR) 结构中实现的。主要是由于光子产生的激子引起 WS2 纳米片的折射率变化，在外部紫/红激光激发下可以观察到透射功率 (Delta T) 的较大变化。在紫色泵浦光激发下，Delta T 变化率可达到约 0.4 dB/mW，而最先进的光控光结构的变化率通常小于 0.25 dB/mW。就响应时间而言，平均上升/下降时间约为0.12/0.1 s。所展示的结构具有易于制造、低成本和高灵敏度的优点，因此，它可能是构建未来基于全光纤的功能器件和全光电路的有希望的候选者。 (C) 2018 年美国光学协会根据 OSA 开放获取出版协议条款
All-optical light-control-light functionality is realized in a layered tungsten disulfide (WS2) nanosheet coated microfiber knot resonator (MKR) structure. Mainly due to the photon generated excitons induced refractive index variation in WS2 nanosheets, a large variation in the transmitted power (Delta T) can be observed under external violet/red laser excitation. The Delta T variation rates can reach up to similar to 0.4 dB/mW under violet pump light excitation whereas the state of the art light-control-light structures usually has a variation rate of less than 0.25 dB/mW. In terms of the response time, the averaged rise/fall time is similar to 0.12/0.1 s. The demonstrated structure has the advantages of easy fabrication, low cost and high sensitivity, therefore, it might be a promising candidate for building future all-fiber-optics based functional devices and all-optical circuitry. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement