In an effort to realize a compact and integrated ultrafast fiber laser system, we propose a fiber component serving as a wavelength division multiplexer (WDM), output coupler (OC), and mode-locker by a magnetron-sputtering saturable absorber (SA) on a laboratory-tapered coupler. With the function-integrated coupler, an Er-doped mode-locked fiber laser with 112 MHz repetition rate, 286 fs pulse width, and 87 dB signal-to-noise ratio (SNR) is demonstrated. The noise feature of the mode-locked laser is also characterized. To the best of our knowledge, this is the first demonstration of a mode-locked fiber laser based on a WDM/OC/SA integrated device.

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基于功能集成光纤耦合器的锁模掺铒光纤激光器

为了实现紧凑和集成的超快光纤激光器系统，我们提出了一种光纤组件，用作波分复用器 (WDM)、输出耦合器 (OC) 和通过磁控溅射可饱和吸收器 (SA) 上的锁模器实验室锥形耦合器。使用功能集成耦合器，演示了具有 112 MHz 重复率、286 fs 脉冲宽度和 87 dB 信噪比 (SNR) 的掺铒锁模光纤激光器。锁模激光器的噪声特征也被表征。据我们所知，这是基于 WDM/OC/SA 集成设备的锁模光纤激光器的首次演示。