Low-frequency noise suppression of a fiber laser based on a round-trip EDFA power stabilizer

Low-frequency noise suppression of a fiber laser based on a round-trip EDFA power stabilizer
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基于往返EDFA功率稳定器的光纤激光器低频噪声抑制

DOI:
10.1088/1054-660x/23/3/035105
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发表时间:
2013-03
期刊:
影响因子:
1.2
通讯作者:
Fang, Z. J.
Fang, Z. J.
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Pan, Z. Q.;Zhou, J.;Yang, F.;Ye, Q.;Cai, H. W.;Qu, R. H.;Fang, Z. J.

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为了抑制窄线宽光纤激光器的低频相对强度噪声(RIN),设计了一种基于往返掺铒光纤放大器(EDFA)结构的功率稳定器。对该噪声抑制器进行了理论分析,并通过实验验证了其可行性。对于采用该器件的短腔单频光纤激光器,获得了约20dBRIN改善(在10 Hz时降至−120dBHzRIN1)。相应的频率噪声也降低了1.6倍。该方法是实现用于高相干探测应用的低频低RIN激光光源的有效解决方案。
We have designed a power stabilizer based on a round-trip erbium-doped fiber amplifier (EDFA) structure to suppress the low-frequency relative intensity noise (RIN) for a narrow linewidth fiber laser. The noise suppressor is analyzed theoretically and its feasibility is verified experimentally. For a short-cavity single-frequency fiber laser with this device, about 20 dB low-frequency RIN improvement is achieved (down to −120 dB Hz−1 at 10 Hz). The corresponding frequency noise is also reduced by a factor of 1.6. The proposed method is an effective solution to achieve a low-frequency low RIN laser source for highly coherent detection applications.
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