Open AccessModal noise impact in Radio over Fiber multimode fiber links
Author(s) -
Ivana Gasulla,
J. Capmany
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.000121
Subject(s) - optics , multi mode optical fiber , modal dispersion , relative intensity noise , noise (video) , fiber optic sensor , physics , optical fiber , materials science , graded index fiber , semiconductor laser theory , computer science , laser , artificial intelligence , image (mathematics)
A novel analysis is given on the statistics of modal noise for a graded-index multimode fiber (MMF) link excited by an analog intensity modulated laser diode. We present the speckle contrast as a function of the power spectrum of the modulated source and the transfer function of the MMF which behaves as an imperfect transversal microwave photonic filter. The theoretical results confirm that the modal noise is directly connected with the coherence properties of the optical source and show that the performance of high-frequency Radio Over Fiber (ROF) transmission through MMF links for short and middle reach distances is not substantially degraded by modal noise.