External pumped all-optical microfiber modulator based on reduced graphene oxide

被引:1
作者
Zamani, Elaheh [1 ]
Malekmohammad, Mohammad [1 ]
Taherian, Afrouz [1 ]
机构
[1] Univ Isfahan, Dept Phys, Esfahan 8174673441, Iran
关键词
RESONATOR;
D O I
10.1364/AO.477761
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In this research, first, the Z-scan technique is used to measure the nonlinear optical properties of reduced graphene oxide (rGO) to indicate the high nonlinear coefficients. Second, a novel, to the best of our knowledge, vertically pumped, all-optical modulator is produced based on a rGO-coated multimode optical microfiber. The effect of the microfiber curvature, microfiber diameter, and substrate materials is investigated and optimized. Also, a simula-tion based on the finite-difference time-domain (FDTD) method is performed. The modulation depth increased to 4.2 dB by the external low-power ultraviolet pump laser (300 mW) for modulators based on the multimode microfibers. The presented process is a simple, cost-effective route to fabricate, and it is easy to use the device.(c) 2023 Optica Publishing Group
引用
收藏
页码:1376 / 1383
页数:8
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