Author Affiliations
Abstract
1 Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
2 College of Optoelectronics Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
3 R and D Center of Yangtze Optical Fiber and Cable Co., Ltd., Wuhan 430073, China
The highly Ge-doped photosensitive fiber (PSF) has been widely used in the fabrication of fiber Bragg gratings (FBGs). Its birefringence and cladding mode coupling characteristics greatly influence FBG's transmission feature in communication application areas. In this work, a new concept of the PSF is introduced which, along with an optimized birefringence design, a precisely controlled fabrication process, and a cladding mode depressed design, results in a written FBG with -25-dB clad mode-depressed ratio and a polarization mode dispersion value less than 0.045 ps.
光纤布拉格光栅 光敏光纤 双折射 偏振模色散 060.2280 Fiber design and fabrication 060.3738 Fiber Bragg gratings, photosensitivity 060.3735 Fiber Bragg gratings Chinese Optics Letters
2010, 8(1): 4
1 华中科技大学 光电子科学与工程学院,湖北 武汉 430074
2 长飞光纤光缆有限公司, 湖北 武汉 430073
研究了在高速拉丝条件下涂覆模具的设计对光纤涂层同心度的影响。高速拉丝过程中,模具中涂料的压力梯度决定了对中作用力和光纤涂层同心度的大小。通过计算证明,涂料在圆锥形模具中流动时,能够在模具内产生一定的压力梯度。内层涂覆时,涂料流动所产生的压力梯度远大于外层涂覆。涂覆模具的孔径、锥度和长度对涂料压力梯度的大小有重要影响。锥度和长度的增加能够提高涂料压力梯度,而模具孔径的增加则对压力梯度有降低作用。通过模具的优化设计,可使1800 m/min速度下所拉光纤的内外涂层同心度平均值分别达到1 μm和2 μm。
光学制造 涂层同心度 压力梯度 模具设计 激光与光电子学进展
2010, 47(2): 022203
1 Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
2 College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
3 Research and Development Center, Yangtze Optical Fibre and Cable Co., Ltd., Wuhan 430074, China
Frontiers of Optoelectronics
2009, 2(3): 339
College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Frontiers of Optoelectronics
2009, 2(2): 178
