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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 23, Iss. 7 — Apr. 1, 1984
  • pp: 1110–1115

Modal noise and distortion caused by a longitudinal gap between two multimode fibers

Santanu Das, Colin G. Englefield, and Paul A. Goud  »View Author Affiliations


Applied Optics, Vol. 23, Issue 7, pp. 1110-1115 (1984)
http://dx.doi.org/10.1364/AO.23.001110


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Abstract

The modal noise and distortion caused by a longitudinal gap between two multimode parabolic-index fibers are discussed and quantified by means of modal analysis. It is found that, for coherent illumination and a given loss, the modal noise and distortion due to a gap are generally as severe as or worse than those due to an axial offset between two fibers. It is also shown that, when a partially coherent source is used, the transmission characteristics of a gap can be improved by increasing the operating wavelength. Experimental results have been obtained for modal distortion and are shown to be in close agreement with the theory.

© 1984 Optical Society of America

History
Original Manuscript: August 22, 1983
Published: April 1, 1984

Citation
Santanu Das, Colin G. Englefield, and Paul A. Goud, "Modal noise and distortion caused by a longitudinal gap between two multimode fibers," Appl. Opt. 23, 1110-1115 (1984)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-23-7-1110


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