Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, Missouri 65409, USA.
Opt Lett. 2012 Feb 15;37(4):494-6. doi: 10.1364/OL.37.000494.
This paper proposes an actively mode-locked fiber ring laser for sensing applications. Mode-locking of the laser is achieved by driving an electro-optic amplitude modulator at an RF corresponding to the fundamental beat frequency between the longitudinal modes. The change of the cavity length produces a frequency comb around the beat frequencies. The frequency separation of the comb is found to be linearly proportional to the cavity length change. The sensing mechanism of the device is shown. Temperature measurement is demonstrated using the proposed actively mode-locked fiber ring laser.
本文提出了一种用于传感应用的主动锁模光纤环形激光器。通过在与纵模基频之间的基本拍频对应的射频(rf)下驱动电光振幅调制器，实现了激光的锁模。腔长的变化产生了围绕拍频的梳状频谱。发现梳状频谱的频率间隔与腔长变化呈线性比例关系。展示了该器件的传感机制。利用所提出的主动锁模光纤环形激光器进行了温度测量。
