结构紧凑的双波长连续波掺铒光纤器 -

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结构紧凑的双波长连续波掺铒光纤器

石俊凯^1,,
王国名^1,,
纪荣祎^1,,
周维虎^{1, 2,,}

1.
中国科学院光电研究院测量技术研究室, 北京 100094
2.
中国科学院大学, 北京 100049

基金项目:

中国科学院国际合作局对外合作重点项目181811KYSB20160029

中国科学院前沿科学重点研究计划QYZDY-SSW-JSC008

详细信息

作者简介:
石俊凯(1986-), 男, 天津宁河人, 博士, 助理研究员, 2009年、2015年于天津大学分别获得学士、博士学位, 主要从事光纤飞秒器及光梳测量方面的研究。E-mail:shijunkai@aoe.ac.cn
王国名(1986—)，男，辽宁庄河人，硕士，助理研究员，2011年、2014年于长春理工大学分别获得学士、硕士学位，主要从事测量方面的研究。E-mail:wangguoming@aoe.ac.cn
纪荣祎(1983—)，男，陕西渭南人，博士，副研究员，2006年于北京化工大学获得学士学位，2012年于北京理工大学获得博士学位，主要从事测量方面的研究。E-mail:jirongyi@aoe.ac.cn
周维虎(1962-), 男, 安徽无为人, 博士, 研究员, 博士生导师, 1983年、2000年于合肥工业大学分别获得学士、博士学位, 主要从事精密仪器与几何量计量方面的研究。E-mail:zhouweihu@aoe.ac.cn

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出版历程
- 收稿日期:2018-09-21
- 修回日期:2018-11-16
- 刊出日期:2019-08-01

Compact dual-wavelength continuous-wave Er-doped fiber laser

doi:10.3788/CO.20191204.0810

1.
Laboratory of Laser Measurement Technology, Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100094, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Funds:

the Key Project of Bureau of International Cooperation, Chinese Academy of Sciences181811KYSB20160029

the Key Research Project of Bureau of Frontier Sciences and Education, Chinese Academy of SciencesQYZDY-SSW-JSC008

More Information

Corresponding author:ZHOU Wei-hu, E-mail:zhouweihu@aoe.ac.cn

摘要

摘要:多波长掺铒光纤器在波分复用光学通信等领域具有广阔的应用前景，引起了大量关注。为了满足不同场合的应用需求，本文报道了一种结构紧凑、基于非线性放大光纤环镜的双波长连续运转掺铒光纤器。该器采用全保偏光纤结构。除了光纤外，腔内只含有波分复用器、2×2光纤耦合器和光纤反射镜3个器件。非线性放大光纤环镜在腔内引入强度相关损耗，当腔内损耗随着入射光强增加而增加时，可以有效抑制腔内模式竞争。当强度相关损耗的抑制作用和模式竞争达到平衡时，器即可实现稳定的多波长输出。在260 mW泵浦功率下，器运转在双波长振荡状态，输出波长分别为1 560.5 nm和1 563.2 nm，边模抑制比达到46.8 dB。随着泵浦功率的提高，器依次工作在单波长、双波长和三波长运转状态。该器结构简单，操作方便，具有很好的应用前景。
- 光纤器/
- 双波长运转/
- 强度相关损耗/
- 模式竞争/
- 非线性放大光纤环镜
Abstract:Multiwavelength erbium-doped fiber lasers can be applied to many fields, such as wavelength division multiplexing optical communication and others attracting considerable attention. To meet the requirements of different applications, we propose a compact dual-wavelength continuous-wave erbium-doped fiber laser based on nonlinear amplifying loop mirror. An all-polarization-maintaining fiber cavity is adopted in which there are only three intracavity devices besides fiber itself:a wavelength division multiplexer, a 2×2 fiber coupler and a fiber reflector. The intensity-dependent loss effect induced by the nonlinear amplifying loop mirror is used to equalize the intensity in the cavity. The input laser with higher power suffers a higher loss than the one with lower power. This feature can be used to suppress mode competition and achieve stable multiwavelength oscillation. With a pump power of 260 mW, dual-wavelength erbium-doped fiber laser can be achieved, with wavelengths of 1 560.5 nm and 1 563.2 nm, respectively. The side-mode suppression ratio is 46.8 dB. As pump power increases, the laser can operate in single-, dual-and triple-wavelength regions in proper order. As the multi-wavelength lasing oscillation is a balance between intensity-dependent loss and mode competition, the intensity change breaks the original balance state, resulting in the change in number and wavelength of lasing lines. This laser is simply structured and easy to operate. It can have applications in many fields.
- fiber lasers/
- dual-wavelength operation/
- intensity-dependent loss/
- mode competition/
- nonlinear amplifying loop mirror

HTML全文

图 1双波长掺铒光纤器实验装置图：LD，二极管；WDM，波分复用器；EDF，掺铒光纤；OC, 光学耦合器；HR，高反射器；OP，输出

Figure 1.Experimental setup of dual wavelength EDF laser: LD, laser diode; WDM, wavelength division multiplexer; EDF, Er-doped fiber; OC, optical coupler; HR, high reflector; OP, output

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图 2非线性光纤环镜原理示意图

Figure 2.Schematic diagram of a nonlinear optical loop mirror

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图 3透射率与相位差的关系曲线

Figure 3.Transmission as a function of the phase difference

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图 4 器输出光谱特性

Figure 4.Characteristics of output spectra

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图 5 器输出稳定性

Figure 5.Laser output stability

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图 6 器斜效率曲线

Figure 6.Output power as a function of pump power

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图 7不同泵浦功率下的输出光谱

Figure 7.Output spectra versus different pump powers

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