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1. 北京信息科技大学 光电信息与仪器北京市工程研究中心 北京,100016
2. 合肥工业大学 仪器科学与光电工程学院,安徽 合肥,230009
3. 现代测控技术教育部重点实验室 北京,100192
4. 北京信息科技大学 光电测试技术北京市重点实验室 北京,100192
纸质出版日期:2019-3-5,
网络出版日期:2018-9-17,
收稿日期:2018-5-21,
修回日期:2018-9-7,
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赵小丽, 张钰民, 庄炜等. 级联光栅结合Sagnac环的可调谐光纤激光器[J]. 发光学报, 2019,40(3): 357-365
ZHAO Xiao-li, ZHANG Yu-min, ZHUANG Wei etc. Tunable Fiber Laser Based on Cascaded Grating Combing with Sagnac Loop[J]. Chinese Journal of Luminescence, 2019,40(3): 357-365
赵小丽, 张钰民, 庄炜等. 级联光栅结合Sagnac环的可调谐光纤激光器[J]. 发光学报, 2019,40(3): 357-365 DOI: 10.3788/fgxb20194003.0357.
ZHAO Xiao-li, ZHANG Yu-min, ZHUANG Wei etc. Tunable Fiber Laser Based on Cascaded Grating Combing with Sagnac Loop[J]. Chinese Journal of Luminescence, 2019,40(3): 357-365 DOI: 10.3788/fgxb20194003.0357.
提出并验证了一种单-双波长可调谐掺铒光纤激光器。利用级联光纤布拉格光栅(Cascaded Fiber Bragg gratings,Cascaded FBGs)结合Sagnac环结构所产生的复合滤波效应,实现较高精细度滤波,并通过调节环内偏振控制器(Polarization Controller,PC),引入双折射效应,得到波长可调谐的光纤激光器。基于耦合模理论并使用传输矩阵法对该结构的传输特性进行了分析,在此基础上搭建实验系统,验证了理论分析的正确性。实验结果表明:通过调节PC,激光器输出激光的波长范围约为1 555.644~1 556.112 nm,双波长间隔的可调范围约为0.108~0.452 nm,单-双波长的边模抑制比(SMSR)均高于40 dB;在稳定性测试中,输出单-双波长激光的波长最大漂移量小于0.008 nm。该方法具有结构简单、调谐方便、易于实现且精细度较高的优点,可应用于密集波分复用及全光通信系统等领域。
A tunable single-dual wavelength erbium-doped fiber laser is proposed and demonstrated. The finer filtering is generated by compound filtering effect which is produced by cascaded fiber Bragg gratings(Cascaded FBGs) combined with Sagnac loop
the birefringence effect is introduced by adjusting polarization controller(PC) in Sagnac loop
and then the tunable fiber laser is obtained. Based on the coupled mode theory and transmission matrix
the characteristics of the structure are analyzed
experimental system is established
and the correctness of theoretical analysis is verified. The experimental results show that
by adjusting PC
the adjustable laser range is about 1 555.644~1 556.112 nm
the wavelength spacing of dual-wavelength is about 0.108~0.452 nm
the side mode suppression ratio (SMSR) of single-and dual-wavelength is more than 40 dB. In the stability test
the maximum wavelength drift of single-and dual-wavelength fiber laser is less than 0.008 nm. The proposed method has the advantages of simple structure
convenient tuning
easy implementation and high fineness
which can be applied in fields such as dense wavelength division multiplexing(DWDM) and all-optical communication systems.
级联光栅Sagnac环双折射效应波长可调谐光纤激光器
cascaded FBGsSagnac loopbirefringence effecttunable wavelengtherbium-doped fiber laser
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