Department of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong.
Opt Lett. 2011 Aug 15;36(16):3024-6. doi: 10.1364/OL.36.003024.
We demonstrate a nanosecond-pulse erbium-doped fiber laser that is passively mode locked by a hollow-core photonic crystal fiber filled with few-layered graphene oxide solution. Owing to the good solution processing capability of few-layered graphene oxide, which can be filled into the core of a hollow-core photonic crystal fiber through a selective hole filling process, a graphene saturable absorber can be successfully fabricated. The output pulses obtained have a center wavelength, pulse width, and repetition rate of 1561.2 nm, 4.85 ns, and 7.68 MHz, respectively. This method provides a simple and efficient approach to integrate the graphene into the optical fiber system.
我们展示了一种由充有少层氧化石墨烯溶液的空芯光子晶体光纤被动锁模的纳秒脉冲掺铒光纤激光器。由于少层氧化石墨烯具有良好的溶液加工能力，可以通过选择性孔填充工艺填充到空芯光子晶体光纤的芯部，因此可以成功制备石墨烯可饱和吸收体。所得到的输出脉冲的中心波长、脉冲宽度和重复率分别为 1561.2nm、4.85ns 和 7.68MHz。该方法为将石墨烯集成到光纤系统中提供了一种简单而有效的方法。
