Measurement of Er3+-doped concentration in optical fiber by using fiber Bragg grating Fabry-Perot cavity ring-down spectrum

作者：Chen Haiyan^*; Chen Lilin; Chen Cong; Wang Meng; Li Qi; Huang Kaiqiang

来源：Chinese Optics Letters, 2014, 12(s1): S10603.

DOI：10.3788/COL201412.S10603

We propose and experimentally demonstrate a novel approach to measure the Er3+ concentration in Er3+ doped silica fiber by fiber Bragg grating Fabry-Perot (FBG-FP) cavity ring-down spectrum. The relationship between the cavity ring-down time and the Er3+-doped concentration is derived. The results demonstrate that the cavity ring-down time is a function of the temperature of FBG, and an Er3+-doped concentration of 0.3 x 10(25) m(-3) at the FBG operation temperature of 25 degrees C is obtained, which is consistent with the commercial Er3+-doped silica fiber parameter. The results obtained have theoretical guidance and develop a new method to measure the ion doped concentration in solid matter.

• 出版日期2014-4-30
• 单位长江大学