Review of so far proposed fiber n/sub 2/ measurement schemes

Accurate determination of fiber nonlinearities is important issue in the design of all-optical transport networks. In this paper, the second-order refractive index (n/sub 2/) has been discussed and its measurement techniques overviewed. The brief description of each measured method is given. This paper focuses on the comparison of different interferometric and non-interferometric measurement schemes in terms of their simplicity and versatility of testing various types of fibers.