2 December 1988 Spatial Coherence Properties Of Light From Optical Fibers
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The mutual intensity of the optical field in the Fraunhofer diffraction region from the end of an optical fiber is analyzed theoretically by using a fiber-end source model. Tn this source model, the optical field at the end of the fiber is expressed as a sum of independent plane waves with random directions and phases since the guided modes propagating through an optical fiber may be regarded as a stochastic process. It is found that the spatial coherence property of the optical field in the diffraction region is not homogeneous but quasihomogeneous in a statistical sense. This property is discussed in connection with the V number of the fiber and in comparison with that of the optical field, obeying the van Cittert-Zernike theorem, produced by the incoherent source.
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Nobukatsu Takai, Nobukatsu Takai, Hiroyuki Yoshimura, Hiroyuki Yoshimura, Toshimitsu Asakura, Toshimitsu Asakura, } "Spatial Coherence Properties Of Light From Optical Fibers", Proc. SPIE 0976, Statistical Optics, (2 December 1988); doi: 10.1117/12.948538; https://doi.org/10.1117/12.948538

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