基于无芯光纤结合保偏光纤的可切换多波长光纤激光器
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摘要
提出了一种具有多波长可切换特性的掺铒光纤激光器,基于模场失配原理,利用无芯光纤结合保偏光纤构成一种光纤内马赫-曾德尔干涉仪(MZI)结构。通过调节MZI结构的曲率半径和偏振控制器,可得到稳定可切换的多波长掺铒光纤激光输出。输出多波长激光的最大波长间隔为40.184 nm,边模抑制比均大于50 dB。对输出激光的波长稳定性进行测试,在1 h内波长漂移量的最大值小于0.06 nm。研究结果表明,所提出的可切换多波长光纤激光器具有较大的输出波长范围和波长间隔、较高的边模抑制比及输出性能稳定等优点。
A switchable multi-wavelength erbium-doped fiber laser is proposed. Based on the mode field mismatch principle, an in-fiber Mach-Zehnder interferometer(MZI) is fabricated by the non-core fiber combing with the polarization maintaining fiber. A stable and switchable multi-wavelength fiber laser can be realized by adjusting the curvature radius of MZI and controlling the polarization controller. The maximum wavelength spacing of the output multi-wavelength fiber laser is about 40.184 nm, and the side mode suppression ratio is larger than 50 dB. In the test of output fiber laser stability, the maximum wavelength variation of output wavelength is less than 0.06 nm in 1 h. The research results show that the proposed switchable multi-wavelength fiber laser has the advantages of a wide switchable wavelength range and a wide wavelength spacing range, a high SMSR, a stable output, and so on.
A switchable multi-wavelength erbium-doped fiber laser is proposed. Based on the mode field mismatch principle, an in-fiber Mach-Zehnder interferometer(MZI) is fabricated by the non-core fiber combing with the polarization maintaining fiber. A stable and switchable multi-wavelength fiber laser can be realized by adjusting the curvature radius of MZI and controlling the polarization controller. The maximum wavelength spacing of the output multi-wavelength fiber laser is about 40.184 nm, and the side mode suppression ratio is larger than 50 dB. In the test of output fiber laser stability, the maximum wavelength variation of output wavelength is less than 0.06 nm in 1 h. The research results show that the proposed switchable multi-wavelength fiber laser has the advantages of a wide switchable wavelength range and a wide wavelength spacing range, a high SMSR, a stable output, and so on.
引文
[1] Liu X S, Zhan L, Luo S Y, et al. Individually switchable and widely tunable multiwavelength erbium-doped fiber laser based on cascaded mismatching long-period fiber gratings[J]. Journal of Lightwave Technology, 2011, 29(21): 3319-3326.
[2] Cheng J Q, Zhang L L, Ma Z J, et al. Tunable and switchable dual-wavelength Er-doped fiber ring laser using ASEs[J]. Optics Communications, 2014, 324: 202-204.
[3] Cao Z G, Zhang Z, Shui T, et al. Switchable dual-wavelength erbium-doped fiber ring laser with tunable wavelength spacing based on a compact fiber filter[J]. Optics & Laser Technology, 2014, 56: 137-141.
[4] Ding Z M, Wang Z K, Zhao C L, et al. Tunable erbium-doped fiber laser based on optical fiber Sagnac interference loop with angle shift spliced polarization maintaining fibers[J]. Optical Fiber Technology, 2018, 42: 1-5.
[5] Bianchetti M, Sierra-Hernandez J M, Mata-Chavez R I, et al. Switchable multi-wavelength laser based on a core-offset Mach-Zehnder interferometer with non-zero dispersion-shifted fiber[J]. Optics & Laser Technology, 2018, 104: 49-55.
[6] Gutierrez-Gutierrez J, Rojas-Laguna R, Estudillo-Ayala J M, et al. Switchable and multi-wavelength linear fiber laser based on Fabry-Perot and Mach-Zehnder interferometers[J]. Optics Communications, 2016, 374: 39-44.
[7] Hao Y P, Zhang S M, Wang X Z, et al. Tunable erbium-doped fiber laser based on multi-mode fiber filter[J]. Acta Optica Sinica, 2011, 31(8): 0814006. 郝艳萍, 张书敏, 王新占, 等. 基于多模光纤滤波器的可调谐掺铒光纤激光器[J]. 光学学报, 2011, 31(8): 0814006.
[8] Qi Y H, Kang Z X, Sun J, et al. Wavelength-switchable fiber laser based on few-mode fiber filter with core-offset structure[J]. Optics & Laser Technology, 2016, 81: 26-32.
[9] Sierra-Hernandez J M, Rojas-Laguna R, Vargas-Rodriguez E, et al. A tunable multi-wavelength erbium doped fiber laser based on a Mach-Zehnder interferometer and photonic crystal fiber[J]. Laser Physics, 2013, 23: 125103.
[10] Zhao X L, Zhang Y M, Yang R T, et al. High-temperature fiber laser sensing combining with low-reflectivity regenerated fiber Bragg grating and saturable absorber[J]. Laser & Optoelectronics Progress, 2018, 55(06): 060605. 赵小丽, 张钰民, 杨润涛, 等. 基于再生低反射率光纤光栅和饱和吸收体的高温光纤激光传感研究[J]. 激光与光电子学进展, 2018, 55(06): 060605.
[11] Cai L, Zhao Y, Li X G. A fiber ring cavity laser sensor for refractive index and temperature measurement with core-offset modal interferometer as tunable filter[J]. Sensors and Actuators B: Chemical, 2017, 242: 673-678.
[12] Liu J X, Wang M G, Liang X, et al. Erbium-doped fiber ring laser based on few-mode-singlemode-few-mode fiber structure for refractive index measurement[J]. Optics & Laser Technology, 2017, 93: 74-78.
[13] Wu Y, Pei L, Jin W X, et al. Highly sensitive curvature sensor based on asymmetrical twin core fiber and multimode fiber[J]. Optics & Laser Technology, 2017, 92: 74-79.
[14] Feng S C, Xu O, Lu S H, et al. Switchable multi-wavelength erbium-doped fiber lasers based on a Mach-Zehnder interferometer using a twin-core fiber[J]. Chinese Physics Letters, 2009, 26(6): 064208.
[15] Nagano K, Kawakami S, Nishida S. Change of the refractive index in an optical fiber due to external forces[J]. Applied Optics, 1978, 17(13): 2080-2085.
[16] Schermer R T. Mode scalability in bent optical fibers[J]. Optics Express, 2007, 15(24): 15674-15701.
[2] Cheng J Q, Zhang L L, Ma Z J, et al. Tunable and switchable dual-wavelength Er-doped fiber ring laser using ASEs[J]. Optics Communications, 2014, 324: 202-204.
[3] Cao Z G, Zhang Z, Shui T, et al. Switchable dual-wavelength erbium-doped fiber ring laser with tunable wavelength spacing based on a compact fiber filter[J]. Optics & Laser Technology, 2014, 56: 137-141.
[4] Ding Z M, Wang Z K, Zhao C L, et al. Tunable erbium-doped fiber laser based on optical fiber Sagnac interference loop with angle shift spliced polarization maintaining fibers[J]. Optical Fiber Technology, 2018, 42: 1-5.
[5] Bianchetti M, Sierra-Hernandez J M, Mata-Chavez R I, et al. Switchable multi-wavelength laser based on a core-offset Mach-Zehnder interferometer with non-zero dispersion-shifted fiber[J]. Optics & Laser Technology, 2018, 104: 49-55.
[6] Gutierrez-Gutierrez J, Rojas-Laguna R, Estudillo-Ayala J M, et al. Switchable and multi-wavelength linear fiber laser based on Fabry-Perot and Mach-Zehnder interferometers[J]. Optics Communications, 2016, 374: 39-44.
[7] Hao Y P, Zhang S M, Wang X Z, et al. Tunable erbium-doped fiber laser based on multi-mode fiber filter[J]. Acta Optica Sinica, 2011, 31(8): 0814006. 郝艳萍, 张书敏, 王新占, 等. 基于多模光纤滤波器的可调谐掺铒光纤激光器[J]. 光学学报, 2011, 31(8): 0814006.
[8] Qi Y H, Kang Z X, Sun J, et al. Wavelength-switchable fiber laser based on few-mode fiber filter with core-offset structure[J]. Optics & Laser Technology, 2016, 81: 26-32.
[9] Sierra-Hernandez J M, Rojas-Laguna R, Vargas-Rodriguez E, et al. A tunable multi-wavelength erbium doped fiber laser based on a Mach-Zehnder interferometer and photonic crystal fiber[J]. Laser Physics, 2013, 23: 125103.
[10] Zhao X L, Zhang Y M, Yang R T, et al. High-temperature fiber laser sensing combining with low-reflectivity regenerated fiber Bragg grating and saturable absorber[J]. Laser & Optoelectronics Progress, 2018, 55(06): 060605. 赵小丽, 张钰民, 杨润涛, 等. 基于再生低反射率光纤光栅和饱和吸收体的高温光纤激光传感研究[J]. 激光与光电子学进展, 2018, 55(06): 060605.
[11] Cai L, Zhao Y, Li X G. A fiber ring cavity laser sensor for refractive index and temperature measurement with core-offset modal interferometer as tunable filter[J]. Sensors and Actuators B: Chemical, 2017, 242: 673-678.
[12] Liu J X, Wang M G, Liang X, et al. Erbium-doped fiber ring laser based on few-mode-singlemode-few-mode fiber structure for refractive index measurement[J]. Optics & Laser Technology, 2017, 93: 74-78.
[13] Wu Y, Pei L, Jin W X, et al. Highly sensitive curvature sensor based on asymmetrical twin core fiber and multimode fiber[J]. Optics & Laser Technology, 2017, 92: 74-79.
[14] Feng S C, Xu O, Lu S H, et al. Switchable multi-wavelength erbium-doped fiber lasers based on a Mach-Zehnder interferometer using a twin-core fiber[J]. Chinese Physics Letters, 2009, 26(6): 064208.
[15] Nagano K, Kawakami S, Nishida S. Change of the refractive index in an optical fiber due to external forces[J]. Applied Optics, 1978, 17(13): 2080-2085.
[16] Schermer R T. Mode scalability in bent optical fibers[J]. Optics Express, 2007, 15(24): 15674-15701.
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