倒锥透镜型塑料光纤连接器光学特性研究

Characteristics of the Upside-down Tapered Lens Polymer Fiber Connector

提出一种基于倒锥透镜光纤端的新型塑料光纤连接器.为了增大光纤的数值孔径,降低光纤端面对于对准准确度的要求,连接器的光纤连接端面制成倒锥透镜形状.利用截断法对该类型连接器的光学特性进行了测试.1m长光纤跳线总损耗有75.7%集中在5.4dB～6.0dB之间,连接损耗70.7%集中在2.1dB～2.7dB之间,同一组跳线插拔200次连接损耗有95%集中分布在2.2dB～2.58dB.实验结果表明:倒锥透镜型塑料光纤连接器可以满足“光纤入户”对连接器性能的要求.

A new type of polymer optical fiber connector based on the upside-down tapered lens （UDTL） technique was proposed. To increase the numerical aperture of polymer fiber and reduce the requirement of fiber ends to registration precision, the fiber end of the connector was created into an upside-down taper lens. The optical characteristics of the connector have been tested. Over 75 percent of coupling efficiency between the light source and the UDTL fiber end is in the range of 5.4 dB to 6.0 dB. More than 70 percent of connecting losses are in the 2.1 dB-2.7 dB range. The insertion losses are in the range from 2.2 dB to2.58 dB as the same suite of optical fiber jumper was inserted and drawn 200 times. The measured dates show that the performance of UDTL polymer fiber connector can meet the demand of fiber to the home.