光学学报, 2020, 40 (17): 1706002, 网络出版: 2020-08-25 复制并引用该论文  被引通知

图 & 表

图 1. 不同模式光斑分布。(a) LP₀₂模式;(b) LP₃₁模式

Fig. 1. Spot distributions of different modes. (a) LP₀₂ mode; (b) LP₃₁ mode

下载图片 查看原文

图 2. 准单模出射光斑及能量分布曲线图。(a)出射光斑;(b)能量分布曲线

Fig. 2. Quasi-single-mode emitting spot and energy distribution curve. (a) Emitting spot; (b) energy distribution curve

下载图片 查看原文

图 3. 光纤中基模的损耗曲线

Fig. 3. Loss curve of fundamental mode in fiber

下载图片 查看原文

图 4. 多模光纤MZI准单模实现系统结构示意图

Fig. 4. Diagram of quasi single mode realization system of multimode fiber MZI

下载图片 查看原文

图 5. 光线以不同入射角耦合进入光纤并经传输后的出射光斑。(a)入射角为0.81°;(b)入射角为1.43°;(c)入射角为2.02°

Fig. 5. Output light spots after light coupling into optical fiber and propagating with different incident angles. (a) Incident angle is 0.81°; (b) incident angle is 1.43°; (c) incident angle is 2.02°

下载图片 查看原文

图 6. 不同入射角时出射光斑能量分布和不同入射角时出射光斑半峰全宽范围内的能量占比。(a)不同入射角时出射光斑能量分布;(b)不同入射角时出射光斑半峰全宽范围内的能量占比

Fig. 6. Spot energy distribution of emitting light at different incident angles, and energy proportion in full width at half-maximum at different incident angles. (a) Spot energy distribution of emitting light at different incident angles; (b) energy proportion in full width at half-maximum at different incident angles

下载图片 查看原文

图 7. 扰模直径为6.6 cm时不同扰模圈数下的输出光斑图。(a) 0圈;(b) 1圈;(c) 2圈;(d) 3圈

Fig. 7. Output faculae at different number of disturbance mode circles when diameter of disturbance mode is 6.6 cm. (a) 0 circle; (b) 1 circle; (c) 2 circles; (d) 3 circles

下载图片 查看原文

图 8. 扰模直径为6.6 cm时不同扰模圈数下的归一化能量分布曲线图和归一化能量随扰模圈数的变化曲线。(a)不同扰模圈数下的归一化能量分布曲线图;(b)归一化能量随扰模圈数的变化曲线

Fig. 8. Normalized energy distribution curves under different number of disturbance mode circles when diameter of disturbance mode is 6.6 cm, and variation of normalized energy with number of disturbance mode circles. (a) Normalized energy distribution curves under different number of disturbance mode circles; (b) variation of normalized energy with number of disturbance mode circles

下载图片 查看原文

图 9. 扰模直径为4.8 cm时不同扰模圈数下的输出光斑图。(a) 1圈;(b) 2圈;(c) 3圈

Fig. 9. Output faculae under different number of disturbance mode circles when diameter of disturbance mode is 4.8 cm. (a) 1 circle; (b) 2 circles; (c) 3 circles

下载图片 查看原文

图 10. 扰模直径为4.8 cm时不同扰模圈数下的归一化能量分布曲线图和归一化能量随扰模圈数的变化曲线。(a)不同扰模圈数下的归一化能量分布曲线图;(b)归一化能量随扰模圈数的变化曲线

Fig. 10. Normalized energy distribution curves under different number of disturbance mode circles when diameter of disturbance mode is 4.8 cm, and variation of normalized energy with number of disturbance mode circles. (a) Normalized energy distribution curves under different number of disturbance mode circles; (b) variation of normalized energy with number of disturbance mode circles

下载图片 查看原文

图 11. 扰模直径为3.0 cm时不同扰模圈数下的输出光斑图。(a) 1圈;(b) 2圈;(c) 3圈

Fig. 11. Output faculae at different number of disturbance mode circles when diameter of disturbance mode is 3.0 cm. (a) 1 circle; (b) 2 circles; (c) 3 circles

下载图片 查看原文

图 12. 扰模直径为3.0 cm时不同扰模圈数下的归一化能量分布曲线图和归一化能量随扰模圈数的变化曲线。(a)不同扰模圈数下的归一化能量分布曲线图;(b)归一化能量随扰模圈数的变化曲线

Fig. 12. Normalized energy distribution curves under different number of disturbance mode circles when diameter of disturbance mode is 3.0 cm, and variation of normalized energy with number of disturbance mode circles. (a) Normalized energy distribution curves under different number of disturbance mode circles; (b) variation of normalized energy with number of disturbance mode circles

下载图片 查看原文

图 13. 扰模直径为2.2 cm时不同扰模圈数下的输出光斑图。(a) 1圈;(b) 2圈;(c) 3圈;(d) 4圈

Fig. 13. Output faculae at different number of disturbance mode circles when diameter of disturbance mode is 2.2 cm. (a) 1 circle; (b) 2 circles; (c) 3 circles; (d) 4 circles

下载图片 查看原文

图 14. 扰模直径为2.2 cm时不同扰模圈数下的归一化能量分布曲线图和归一化能量随扰模圈数的变化曲线。(a)不同扰模圈数下的归一化能量分布曲线图;(b)归一化能量随扰模圈数的变化曲线

Fig. 14. Normalized energy distribution curves under different number of disturbance mode circles when diameter of disturbance mode is 2.2 cm, and variation of normalized energy with number of disturbance mode circles. (a) Normalized energy distribution curves under different number of disturbance mode circles; (b) variation of normalized energy with number of disturbance mode circles

下载图片 查看原文

图 15. 不同扰模直径下扰模圈数为1时的能量曲线对比图和归一化输出能量。(a)能量曲线对比图; (b)归一化输出能量

Fig. 15. Comparison of energy curves and normalized output energy under different disturbance mode diameters when number of disturbance mode circle is 1. (a) Energy curve comparison; (b) normalized output energy

下载图片 查看原文

图 16. 不同扰模直径下扰模圈数为2时的能量曲线对比图和归一化输出能量。(a)能量曲线对比图; (b)归一化输出能量

Fig. 16. Comparison of energy curves and normalized output energy under different disturbance mode diameters when number of disturbance mode circles is 2, and normalized output energy. (a) Energy curve comparison; (b) normalized output energy

下载图片 查看原文

图 17. 不同扰模直径下扰模圈数为3时的能量曲线对比图和归一化输出能量。(a)能量曲线对比图; (b)归一化输出能量

Fig. 17. Comparison of energy curves and normalized output energy under different disturbance mode diameters when number of disturbance mode circles is 3, and normalized output energy. (a) Energy curve comparison; (b) normalized output energy

下载图片 查看原文

图 18. 不同扰模直径下半峰全宽范围内能量占比随扰模圈数的变化

Fig. 18. Energy proportion in full width at half-maximum under different disturbance mode diameters varies with number of disturbance mode circles

下载图片 查看原文

图 19. 多普勒激光雷达系统夜晚探测信噪比随高度的变化曲线

Fig. 19. Detection SNR of Doppler lidar system at night versus detection height

下载图片 查看原文

表 12×2阶跃折射率多模光纤耦合器(FG200UEA)参数

Table1. Parameters of 2×2 step refractive index multimode fiber coupler (FG200UEA)

Parameter Value Core diameter /μm 200 Cladding outer diameter /μm 220 NA 0.22 Wavelength /nm 400--900 Splitting ratio (650 nm) 50%/50%

查看原文

表 2多模光纤(紫外石英包层光纤)参数

Table2. Parameters of multimode fiber (ultraviolet quartz double-cladding fiber)

Parameter Multimode fiber Core diameter /μm 200 Cladding outer diameter /μm 220 NA 0.22 Wavelength /nm 190--1200 Transmittance at 632.8 nm /% ≥99.7

查看原文

汪丽, 陈阳, 索建平, 潘睿, 王东, 高飞, 华灯鑫. 多普勒激光雷达多模光纤Mach-Zehnder干涉仪鉴频系统准单模设计及实现[J]. 光学学报, 2020, 40(17): 1706002. 汪丽, 陈阳, 索建平, 潘睿, 王东, 高飞, 华灯鑫. Quasi Single Mode Design and Implementation of Doppler Lidar Frequency Discrimination System Based on Multimode Fiber Mach-Zehnder Interferometer[J]. Acta Optica Sinica, 2020, 40(17): 1706002.