Yu Shaoliang, Meng Chao, Chen Bigeng, Wang Hongqing, Wu Xiaoqin, Liu Weitao, Zhang Shangjian, Liu Yong, Su Yikai, Tong Limin
Opt Express. 2015 Apr 20;23(8):10764-70. doi: 10.1364/OE.23.010764.
We demonstrate ultrafast optical modulation using a single 1-μm-diameter graphene-decorated microfiber, which is fabricated with a convenient and controllable evanescent-field-induced deposition method. Benefitting from the significantly enhanced light-graphene interaction of the subwavelength transvers dimension of the microfiber and accumulation of the saturable absorption of the piled graphene flakes, the microfiber shows nonlinear saturable absorption with a peak power threshold down to 1.75 W (60 MW/cm(2)), with a measured response time of about 3.5 ps.
我们展示了使用一根直径为1μm的单根石墨烯修饰微纤维实现的超快光调制，该微纤维是通过一种方便且可控的倏逝场诱导沉积方法制造的。得益于微纤维亚波长横向尺寸显著增强的光-石墨烯相互作用以及堆积的石墨烯薄片的可饱和吸收累积，该微纤维呈现出非线性可饱和吸收，其峰值功率阈值低至1.75W（60MW/cm²），测量得到的响应时间约为3.5ps。
