Abstract
It is well known that, in certain necessary conditions, a changing speckle pattern exists at the output plane of a multimode optical fiber which can cause signal power fluctuations known as modal noise. The necessary conditions are generally stated as: (1) a sufficiently narrow source spectrum and a sufficiently short fiber length so that the coherence length of the source is greater than the fiber's modal dispersion; (2) either fiber movement or source frequency shift; and (3) spatial filtration at a fiber output plane (such as at a misaligned connector).
© 1981 Optical Society of America
PDF ArticleMore Like This
R. E. Epworth and M. J. Pettitt
TUF2 Optical Fiber Communication Conference (OFC) 1981
R. H. Stolen, R. E. Wagner, and W. Pleibel
WG5 Optical Fiber Communication Conference (OFC) 1981
Sze-Keung Kwong, Kazuo Kyuma, and Amnon Yariv
FW6 OSA Annual Meeting (FIO) 1986