CAJ | 학술논문

超荧光光纤光源(SFS)具有高稳定性，是光纤传感器(FOSs)中一种理想的光源。SFS光源的相对强度噪声(RIN)是影响FOSs性能的一个重要的因素。由于使用模拟抑制电路的噪声抑制系统无法很好的抑制RIN ，文中提出了使用强度调制器的数字RIN抑制系统。为了验证此想法，建立了半实物仿真模型，该模型可以在中心频率处抑制RIN达到20 dB。该数字系统相对原有模拟系统，性能有了很大的提高，因此对FOSs性能的提高有很大的贡献。
초형광광섬광원(SFS)구유고은정성，시광섬전감기(FOSs)중일충이상적광원。SFS광원적상대강도조성(RIN)시영향FOSs성능적일개중요적인소。유우사용모의억제전로적조성억제계통무법흔호적억제RIN ，문중제출료사용강도조제기적수자RIN억제계통。위료험증차상법，건립료반실물방진모형，해모형가이재중심빈솔처억제RIN체도20 dB。해수자계통상대원유모의계통，성능유료흔대적제고，인차대FOSs성능적제고유흔대적공헌。
The superfluorescent fiber source (SFS) is an ideal source for fiber optic sensors (FOSs), because of the high stability. Relative intensity noise (RIN) of a SFS is proven to be an most important factor limiting the performance of FOSs. As the RIN cannot be suppressed effectively using an analog circuit, in this paper, a digital RIN suppressing system executed with intensity modulator was presented. To demonstrate this method, a semi-physical simulation was propose in which the RIN was reduced by 20 dB at the center frequency. This method is more effective than the former analog one by simulation. This digital RIN suppressing system is of great value to improve the performances of FOSs.