Analysis and simulation of a fiber bundle method for creating a partially spatially coherent beam

作者：Xiao Xifeng; Voelz David^*

来源：Applied Optics, 2013, 52(23): 5794-5802.

DOI：10.1364/AO.52.005794

A fiber bundle arrangement containing a distribution of fiber lengths has been proposed in the literature to produce a partially spatially coherent beam. Light input to the bundle with limited temporal coherence is translated into limited spatial coherence. Expressions are developed for the bundle pupil autocorrelation function and far-field irradiance pattern. A numerical simulation approach is implemented and results are compared with a speckle-free result. The fiber bundle approach tends to create an irradiance pattern whose average shape matches the pattern produced by a single fiber. A %26quot;smoothed%26quot; far-field pattern is obtained if the fiber length difference is much greater than the source temporal coherence length.

• 出版日期2013-8-10