论文部分内容阅读
提出一种稳定的波长间隔可调谐的双波长单纵模环形光纤激光器.在复合环形谐振腔中,采用由数字微镜装置(DMD)滤波器和两个不同长度的次级环形谐振腔组成的多重滤波的方式来选择激光器的工作模式.其中,DMD滤波器可以从掺铒光纤的自发增益谱中任意选择两个波长并将它们耦合进光路中;次级环形谐振腔作为模式滤波器,可以保证激光器输出单纵模激射;利用非线性光子晶体光纤(HN-PCF)的四波混频(FWM)效应,使激光器输出均衡平稳的双波长激射.在室温条件下,不用移动实验装置中的任何器件,通过将位置不同的光栅映射在DMD滤波器上来实现双波长间隔可调谐,调谐范围为0.165 nm到1.08 nm,调谐步长为0.055 nm.
A stable dual-wavelength single-longitudinal mode fiber laser with tunable wavelength interval is proposed. In the composite circular resonator, a digital micromirror device (DMD) filter and two secondary ring resonators of different lengths are used Multiple filters to choose the mode of operation of the laser where the DMD filter can be arbitrarily selected from the spontaneous gain spectrum of the erbium-doped fiber two wavelengths and their coupling into the optical path; the secondary ring resonator as a mode filter, The laser output is single-mode lasing and the laser output is balanced and stable by the four-wave mixing (FWM) effect of nonlinear photonic crystal fiber (HN-PCF). Under the condition of room temperature, A dual wavelength-tunable, tunable range of 0.165 nm to 1.08 nm with a tuning step of 0.055 nm is achieved by mapping the different gratings onto the DMD filter.