用虚像相位阵列（VIPA）和红外成像系统来实现高分辨率的布拉格光纤光栅（FBG）的波长解调，通过VIPA结合衍射光栅，使输出的光束按波长分布到二维平面上，实现波长与成像面上空间坐标的一一映射，然后使用红外成像系统来检测。整套装置没有可移动部件，具有很好的可重复性、稳定性和可靠性。通过实验对该方法进行了验证，具有较高的分辨率，系统的分辨率小于2 pm。

It is proposed and demonstrated that a method to realize the fiber Bragg grating (FBG) demodulation based on virtually-imaged phased array (VIPA) and infrared imaging system. Two-dimensional (2D) spectral imaging can be realized by using VIPA and diffraction grating. The wavelength of the gratings can be integrated by analyzing the imaging of the infrared camera. It has no moving parts. The reproducibility, stability and reliability of the system is perfect and its resolution is higher than the traditional charge-coupled device (CCD) method by using VIPA as dispersive device instead of volume diffraction grating. The resolution of the system is better than 2 pm.