光纤到户对光纤在小弯曲半径条件下的衰减特性提出了更高的要求。微结构光纤可以实现极小弯曲半径的低衰减光信号传输,是小弯曲半径单模光纤技术解决方案的有力竞争者。设计了一种新的微结构光纤,并研制出光纤样品。这种结构的光纤具有非常优良的弯曲特性。其最小弯曲半径可达2 mm,1 550 nm附加损耗小于0.1 dB,并且具有优良的偏振模色散特性,熔接损耗也非常小,其与G.652D单模光纤的熔接损耗为0.12 dB。这些特性使其在光纤到户的复杂应用环境中具有明显的应用优势。

In this paper, we describe and provide a novel micro-structured optical fiber for FTTH, which has 12 holes in its cladding. The fiber has very good bending properties. The bending losses of the novel micro-structured fibers at the conditions of 2 mm bending-radius are less than 0.1 dB at 1 550 nm wavelength. The typical PMD of the novel microstructure fiber is very good. The splice loss between the novel microstructure fibers with G.652D fibers is 0.12 dB. This novel micro-structured optical fiber technology is a strong contender to achieve low-loss bending-insensitive solutions compared to conventional communication fibers.