Refractive Index Profiler

The nPA-400 refractive index profiler from Arden Photonics Ltd. incorporates a novel measurement technique to provide 2D refractive index profiles of optical fibers in a few seconds. 

The system is designed for use on production lines, in R&D laboratories, and in quality assurance environments. By providing accurate and repeatable refractive index data, the profiler makes it simple to quickly verify standard and specialty fiber designs by producing valuable information on the fiber design and the manufacturing process.

The nPA-400 uses a modified refracted nearfield technique to analyze the end-view grey scale intensity profile of a fiber to determine its full 2D refractive index distribution. By eliminating the need to rotate the fiber or scan the fiber end face, a very fast measurement time is made possible. The profiler can measure all types of standard and specialty fibers across diameters from 40 to 400 µm.