The stability of the central wavelength of the erbium-doped fibre source (EDFS) is one of the most important parameters to ensure the accurate operation of navigation systems based on high-accuracy fibre optic gyroscopes (FOGs). In this study, the method of stabilisation of the EDFS as a part of the FOG is presented. The main advantage of this method is the possibility of quick and simple matching of temperature-compensating spectral filters by changing the pump ratio without modifying the optic scheme. The EDFS optic scheme based on the double-pass bidirectional pumping configuration. It makes it possible to obtain the world-class stability of the central wavelength of the EDFS as a component of different devices with the spectral selectivity and set the constant value of the optic power of the output light (OL). Also, this is the first study of the dependence of the temperature coefficient of the central wavelength on the pump ratio. The proposed method allows compensating the spectral characteristics of the FOG, achieving the OL central wavelength stability around 0.7 ppm/°C and the FOG scale factor stability around 0.73 ppm/°C.

中文翻译：

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作为高精度FOG一部分的掺光纤源中心波长的稳定

掺fiber光纤源（EDFS）中心波长的稳定性是确保基于高精度光纤陀螺仪（FOG）的导航系统准确运行的最重要参数之一。在这项研究中，提出了稳定EDFS作为FOG一部分的方法。该方法的主要优点是可以通过改变泵速比而无需修改光学方案即可快速简单地匹配温度补偿光谱滤波器。EDFS光学方案基于双通双向泵浦配置。作为具有光谱选择性的不同设备的组成部分，有可能获得世界一流的EDFS中心波长的稳定性，并设置输出光（OL）的光功率的恒定值。也，这是首次研究中心波长温度系数与泵浦比的关系。所提出的方法可以补偿FOG的光谱特性，实现OL中心波长稳定性在0.7 ppm /°C附近，并且FOG比例因子稳定性在0.73 ppm /°C附近。