Suo Xinxin, Yu Haicheng, Yang Yongbin, Feng Wenshuai, Xie Pei, Chang Yujia, He Yang, Tang Mengxi, Xiang Zheng
Appl Opt. 2021 Apr 10;60(11):3103-3107. doi: 10.1364/AO.419969.
A novel scheme of an ultralow relative intensity noise (RIN) broadband source module employing a double pumped backward (DPB) Er-doped superfluorescence fiber source (EDSFS) and a semiconductor optical amplifier for interferometric fiber optic gyroscopes (IFOGs) is proposed. With optimized parameters, the optimal twin-peak output profile of the source is obtained. The effective optical spectrum width of the source is 38.6 nm, and the output power is about 12.5 mW. Compared with the DPB EDSFS with a similar spectrum, the ultralow RIN broadband source proposed demonstrates a lower RIN of about 8.4 dB. A high-precision IFOG utilizing the ultralow RIN broadband source is set up, and the performance of the IFOG is experimentally studied. An angle random walk coefficient of 6.93×10/ is demonstrated, which is reduced by about 31.5% compared with the same IFOG system utilizing conventional DPB EDSFS with a similar spectrum profile. The ultralow RIN broadband source module proposed is quite feasible for high-precision IFOGs used in strategic-grade navigation systems and satellites.
提出了一种用于干涉式光纤陀螺仪（IFOG）的超低声相对强度噪声（RIN）宽带光源模块的新颖方案，该方案采用双泵浦后向（DPB）掺铒超荧光光纤光源（EDSFS）和半导体光放大器。通过优化参数，获得了光源的最佳双峰输出轮廓。光源的有效光谱宽度为38.6nm，输出功率约为12.5mW。与具有相似光谱的DPB EDSFS相比，所提出的超低声RIN宽带光源的RIN更低，约为8.4dB。搭建了一个利用该超低声RIN宽带光源的高精度IFOG，并对其性能进行了实验研究。实验得到的角度随机游走系数为6.93×10⁻⁶（此处原文似乎有误，推测是6.93×10⁻⁶），与使用具有相似光谱轮廓的传统DPB EDSFS的相同IFOG系统相比，降低了约31.5%。所提出的超低声RIN宽带光源模块对于战略级导航系统和卫星中使用的高精度IFOG是非常可行的。
