The length of an erbium-doped fiber laser is optimized to develop a dual-wavelength nonlinear polarization rotation mode-locked erbium-doped fiber laser. The mode-locked laser can emit two stable wavelengths of 1530 nm and 1558 nm with a fiber length of 570 cm. With the absorbed pump power of 150 mW, the maximum average output power of 19.2 mW with the repetition frequency of 11.95 MHz and pulse width of 389 fs is obtained.

中文翻译：

---

基于掺铒光纤长度优化的双波长锁模激光器

对掺铒光纤激光器的长度进行优化，研制出双波长非线性偏振旋转锁模掺铒光纤激光器。锁模激光器可以发射1530 nm和1558 nm两种稳定波长，光纤长度为570 cm。吸收泵浦功率为150 mW，在重复频率为11.95 MHz，脉冲宽度为389 fs的情况下，最大平均输出功率为19.2 mW。