分析了两类光纤锥(熔拉锥和腐蚀锥)的模场传输特性，引入了特征转换点．为降低模式耦合损失和增强聚焦效果，光纤锥微透镜制作的最佳位置：熔拉锥在靠近特征转换点处，腐蚀锥在锥端至特征转换点之间，并讨论光纤微透镜对高斯光束的聚焦．
Transmission properties of the pulled and the etched fiber tapers have been analyzed with local couple mode theory. To decrease the mode coupling loss and increase the focusing effect, the characteristic transition points are introduced.For taper pulled fiber, the optimal fabrication position of fiber microlens is near the characteristic transition point, while for the taper etched fiber, the optimal fabrication position is between the taper tip and the characteristic transition point.The focusing property of Gaussial beam through fiber microlens for trapping of particles is also discussed.
参考文献
| [1] | Keil R , Klement E et al. Experimental investigation of the beam spot size radius in single-mode fiber tapers. Electron. Lett., 1984, 20:621～622 |
| [2] | Ghafoori-shiraz H, Asano T. Microlens for coupling a semiconductor laser to a single-mode fiber.Opt. Lett., 1986, 11:537～539 |
| [3] | Chung Y C, Meisenfeld J M et al. Intermodulation distortion in a multiple-quantum-well semiconductor optical amplifier. IEEE Photon. Tech. Lett., 1991, 3:130～132 |
| [4] | Barnard C W, Lit J W. Single-mode fiber microlens with controllable spot size. Appl. Opt., 1991,30:1958～1962 |
| [5] | Snyer A W, Love J D. Optical Waveguide Theory. New York: Chapman & Hall, 1983. chap.19 |
| [6] | Taguchi K, Ueno H et al. Optical trapping of dielectric particle and biological cell using optical fibre. Electron. Lett., 1997, 33:413～414 |
| [7] | Wright W H, Sonek G J et al. Laser trapping in cell biology. IEEE J. Quantum Electron., 1990,26:2148～2157 |
| [8] | Liu Kai, Ming Hai, Lu YongHua. Numerical simulation of fiber probe patterns of SNOM using FDTD method. The Second Asia-pacific Workshop on Near-field Optics. Beijing: Peking University, 1999. Oct., 20～23 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%