Highly nonlinear fibers
It was realized during the 1990s that the value of the nonlinear parameter y is too small for most optical fibers to be useful as a nonlinear medium for applications requiring short lengths. To solve this problem, several new kinds of fibers with have been developed, and they are collectively referred to as highly nonlinear fibers (HNLFs). This chapter deals with the properties of such fibers. The techniques used to measure the nonlinear parameter are described first in Section 11.1. Sections 11.2 to 11.5 then focus on four kinds of fibers that have been developed to enhance the nonlinear effects. In each case, dispersive properties of the fibers are also described because they play an important role ...
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