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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：大直径无芯纤维作为易掺杂光纤激光腔的可饱和吸收器，基于多模干扰

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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：我们首次展示了基于大直径无芯纤维的Q开关铒掺杂光纤激光器（EDFL），而不是腔内的腔内调谐元件。作为无源Q切换器，采用单模光纤-Single模式光纤（SNCFS）结构依赖于与Mull模式干扰（MMI）效应相关的Kerr非线性。通过在两个单模纤维（SMF）之间的直径无芯纤维（NCF）中拼接10cm的125μmm，成功获得了具有3-dB带宽的C波段Q开关EDFL，使其成为简单，紧凑的和轻松处理调制设备。通过188mW的泵阈值实现稳定的Q开关脉冲。脉冲重复率范围为73.3至92.0 kHz，记录最小脉冲宽度为3.5μs，最大能量为50.9 nj。

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