| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an optical fiber array for converting a mode field diameter, an optical fiber array which is used for connecting between multiple SMFs of a different mode field diameter or between a multiple SMF and a PLC and which has less connection loss, and also to provide its manufacturing method. <P>SOLUTION: In an optical fiber array which is structured by arranging in parallel a plurality of cores having a high refractive index and by covering the circumference all together with a clad having a low refractive index, the cores are provided with a refractive index distribution of a graded index type. This optical fiber array is made by drilling a plurality of holes in quartz glass, drawing lines after inserting a core rod in these holes, and cutting off at prescribed intervals. According to the invention, it can provide the optical fiber array for converting a mode field diameter as well as the manufacturing method, eliminating a complex conventional process and enabling a nearly constant stable connection loss to be realized for each optical fiber of a multiple optical fiber. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
