A multi-wavelength single-longitudinal-mode optical fiber laser using fiber Bragg grating (FBG) as wavelength selector and FBG based Fabry-Perot filters as frequency selector is studied. The optical fiber laser includes several fiber laser resonators and there is a length of erbium-doped fiber used as gain medium in each resonator. Each of the laser resonators uses a FBG as wavelength selector and there are two FBG based Fabry-Perot filters used as frequency selectors in each resonator and thus each resonator can emit single longitudinal mode laser. Experiments show that the fiber laser can emit multiple wavelengths simultaneously, and each wavelength is single longitudinal mode. The stability of each wavelength can reach 10⁻⁶.

研究了一种以光纤布拉格光栅(FBG)为波长选择器，以FBG法布里-珀罗滤波器为频率选择器的多波长单纵模光纤激光器。光纤激光器包括多个光纤激光器谐振腔，每个谐振腔中都有一段掺铒光纤作为增益介质。每个激光谐振腔使用一个 FBG 作为波长选择器，并且有两个基于 FBG 的法布里-珀罗滤波器用作每个谐振腔中的频率选择器，因此每个谐振腔可以发射单纵模激光。实验表明，光纤激光器可以同时发射多个波长，每个波长为单纵模。每个波长的稳定性可达10 ^-6。