高兼容性超低弯曲损耗单模光纤的制备与表征

Preparation and characterization of high-compatibility ultra-low bending loss single-mode optical fibers

介绍了一种新型非光子晶体结构弯曲不敏感单模光纤的设计与制备。采用数值计算方法分析了光纤的下陷型波导结构,通过PCVD(等离子体化学气相沉积法)工艺获得了1 310nm波长的模场直径为4.3μm、1 550nm波长的模场直径为5.4μm的光纤样品,与G.652D光纤的双点接续损耗低至0.15dB,满足普通跳线的接续要求。该样品在2.5mm弯曲半径条件下弯曲10圈,其1 550nm波长的弯曲损耗优化至0.01dB,可适用于任何苛刻的FTTx应用环境,并有替代铜缆成为消费电子中理想传输介质的潜力,同时还可用于各种光电器件中。

This letter introduces the design and preparation of a novel non-photonic crystal structured and bend-insensitive single- mode optical fiber. It numerically analyzes the trench waveguide structure of the fiber and obtains by using the PCVD process its sample with a MFD of 4. 3 μm at 1 310 nm and 5.4 μm at 1 550 nm, and a splicing loss with G. 652D fiber as low as 0.15 dB/2 joints, satisfying the splicing requirements of common jumpers. When this sample is wound 10 turns with a bend radius of 2.5 mm, its bending loss is optimized to 0.01 dB at 1 550 nm, satisfying any harsh FTTx application environment. Furthermore, it has the potential to replace copper cables as an ideal transmission medium in consumer electronics and to be ap- plied in various photoelectronic devices.