Observation of Wavelength Tuning in a Mode-Locked Figure-9 Fiber Laser
Observation of Wavelength Tuning in a Mode-Locked Figure-9 Fiber Laser
复制标题
锁模 9 字光纤激光器中波长调谐的观察
DOI：
10.3390/photonics10020184
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发表时间：
2023-02
期刊：
影响因子：
2.4
通讯作者：
朱启华
中科院分区：
文献类型：
--
作者：
张涵;夏汉定;范孟秋;郑钧文;李剑彬;田小程;周丹丹;黄智蒙;张帆;张锐;彭志涛;朱启华
我们基于图9的配置，展示了一个全PM ER掺杂的孤子模式锁定的纤维振荡器，具有紧凑的可调节反射型非重点相位移位器。建立了基于琼斯矩阵的分析模型，以模拟
We demonstrate an all-PM Er-doped soliton mode-locked fiber oscillator based on the figure-9 configuration with a compact adjustable reflection-type non-reciprocal phase shifter. An analytical model based on the Jones matrix is established to simulate the wavelength tuning phenomenon. Experimentally, it is observed that the increase in pump power results in a significant redshift in the spectrum of output pulses. When the angle of the half-wave plate is rotated in one direction, the output spectrum is redshifted and then blueshifted successively. Good qualitative agreement is presented between the simulations and the experimental results. It is shown that the increase in pump power changes the nonlinear phase shift, which causes the redshift of the transmittance curves at the laser output port. In contrast, the rotation of wave plates not only changes the nonlinear phase shift difference, but also causes variations in linear phase bias and modulation depth. The changes in these parameters lead to the redshift and blueshift of the transmission curves, which enables wavelength tuning.
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