| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for making a depressed index cladding for the inner cladding of an optical fiber. <P>SOLUTION: The method involves making the depressed index cladding in two steps. The innermost portion of the inner cladding is produced using a soot method, thereby deriving the advantages of the soot method for the region of the cladding that carries the most optical power, and then the remaining portion of the inner cladding layer is formed using a rod-in-tube step. This method effectively marries the advantages and disadvantages of the both methods. <P>COPYRIGHT: (C)2012,JPO&INPIT |
