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首页> 外文期刊>Optical fiber technology >Large diameter coreless fiber as a saturable absorber for erbium doped fiber laser cavity based on multimode interference
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Large diameter coreless fiber as a saturable absorber for erbium doped fiber laser cavity based on multimode interference

机译：基于多模干涉的大直径无芯光纤作为掺do光纤激光腔的可饱和吸收体

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摘要

We demonstrated a Q-switched erbium-doped fiber laser (EDFL) based on large diameter coreless fiber without intra-cavity tuning element for the first time. A single mode fiber -coreless fiber -single mode fiber (SNCFS) structure was employed as a passive Q-switcher relies on Kerr nonlinearity associated with mull-mode interference (MMI) effect. By splicing 10 cm of 125 mu m in diameter coreless fiber (NCF) between two single mode fibers (SMFs), C-band Q-switched EDFL with 3-dB bandwidth of 0.138 nm was successfully obtained, making it a simple, compact and easily handling modulation device. A stable Q-switched pulses were achieved with a pump threshold of 188 mW. Pulse repetition rate ranges from 73.3 to 92.0 kHz, minimum pulse width of 3.5 mu s and maximum energy of 50.9 nJ were recorded.
机译：我们首次展示了一种基于大直径无芯光纤，无腔内调谐元件的调Q掺光纤激光器（EDFL）。单模光纤-无芯光纤-单模光纤（SNCFS）结构被用作无源Q切换器，它依赖于与模态干扰（MMI）效应相关的Kerr非线性。通过在两个单模光纤（SMF）之间拼接10 cm直径为125μm的无芯光纤（NCF），成功获得了3 dB带宽为0.138 nm的C波段调Q EDFL，使其变得简单，紧凑，易于处理的调制装置。在188 mW的泵浦阈值下实现了稳定的Q开关脉冲。记录的脉冲重复频率为73.3至92.0 kHz，最小脉冲宽度为3.5 s s，最大能量为50.9 nJ。

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