Online optical fiber light field measurement system and method

The invention relates to the technical field of optical fibers and lasers, and particularly discloses an online optical fiber light field measurement system and method.According to the linear optical fiber light field measurement system, an optical nanoparticle array is manufactured on an optical fiber cladding, fiber core light field distribution is obtained through direct detection by means of the microstructure and photosensitivity of optical nanoparticles, and the optical fiber core light field measurement accuracy is improved. Compared with a traditional mode that field distribution in the optical fiber is indirectly judged through laser output light field distribution, the method has the advantages that the optical fiber light field can be obtained more rapidly and accurately, and the method has important application value for further power improvement of an optical fiber laser. 本发明涉及光纤及激光技术领域，具体公开了一种在线式光纤光场测量系统及方法，线式光纤光场测量系统通过在光纤包层上制作光学纳米粒子阵列，利用光学纳米粒子的微结构和光敏性，直接探测得到纤芯光场分布，实现了光纤光场的在线测量，相比于传统的通过激光输出光场分布来