激光与光电子学进展, 2020, 57 (19): 190605, 网络出版: 2020-09-27 复制并引用该论文  本文已被引 1 次  被引通知

图 & 表

图 1. 制备MT-LPFG的实验系统示意图和基于周期性拉锥SMF制备的MT-LPFG的显微镜图。(a)制备MT-LPFG的实验系统示意图;(b)基于周期性拉锥SMF制备的MT-LPFG的显微镜图

Fig. 1. Experimental system diagram for fabricating MT-LPFG, and micrograph of MT-LPFG based on periodically tapered SMF. (a) Experimental system diagram for fabricating MT-LPFG; (b) micrograph of MT-LPFG based on periodically tapered SMF

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图 2. 周期为400 μm 的MT-LPFG的透射谱

Fig. 2. Transmission spectrum of MT-LPFG with grating period of 400 μm

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图 3. 双级联MT-LPFGs (周期为397 μm和400 μm)和周期为400 μm的MT-LPFG的透射谱

Fig. 3. Transmission spectra of two cascaded MT-LPFGs with periods of 397 μm and 400 μm and MT-LPFG with period of 400 μm

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图 4. 不同周期MT-LPFGs的透射谱

Fig. 4. Transmission spectra of MT-LPFGs with different periods

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图 5. 三级联MT-LPFGs和周期为400 μm的MT-LPFG的透射谱

Fig. 5. Transmission spectra of 3 cascaded MT-LPFGs and MT-LPFG with period of 400 μm

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图 6. 测量三级联MT-LPFGs弯曲特性的实验装置

Fig. 6. Experimental setup for measuring bending characteristics of three cascaded MT-LPFGs

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图 7. 在MT-LPFG2曲率大于1.16 m^-1时波长移动与曲率的线性关系,以及曲率对三级联MT-LPFGs透射谱的影响。(a)在MT-LPFG2曲率大于1.16 m^-1时波长移动与曲率的线性关系;(b)曲率对三级联MT-LPFGs透射谱的影响

Fig. 7. Linear relationship between wavelength shift and curvature when curvature of MT-LPFG2 is larger than 1.16 m^-1, and influence of curvature on transmission spectra of 3 cascaded MT-LPFGs. (a) Linear relationship between wavelength shift and curvature when curvature of MT-LPFG2 is larger than 1.16 m^-1; (b) influence of curvature on transmission spectra of 3 cascaded MT-LPFGs

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表 1周期为400 μm 的MT-LPFG的制作参数

Table1. Fabrication parameters for MT-LPFG with period of 400 μm

Description Value CO2 laser power /W 6 Heating time /ms 800 Translation speed /(μm·ms) 0.100 Translation time of left motor /ms 4000 Translation time of right motor /ms 3850 Grating period /μm 400 Grating period number 120 Grating length /mm 48

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严学文, 任立勇, 杨利, 冉东升, 韩冬冬, 王勇凯, 梁磊, 许程访, 刘继红, 董军, 任凯利. 基于高精度微锥型长周期光纤光栅的宽带滤波器[J]. 激光与光电子学进展, 2020, 57(19): 190605. Xuewen Yan, Liyong Ren, Li Yang, Dongsheng Ran, Dongdong Han, Yongkai Wang, Lei Liang, Chengfang Xu, Jihong Liu, Jun Dong, Kaili Ren. Broadband Filter Based on High-Precision Microtapered Long-Period Fiber Gratings[J]. Laser & Optoelectronics Progress, 2020, 57(19): 190605.