Mode-selective spatial filtering for increased robustness in a mode group diversity multiplexing link
Optics Letters, Vol. 32, Issue 9, pp. 1041-1043 (2007)
http://dx.doi.org/10.1364/OL.32.001041
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Abstract
We propose a very simple optical method to reduce the cross talk among the channels of a mode group diversity multiplexing (MGDM) link. MGDM is an intensity modulation, direct detection, multiple-input, multiple-output technique that creates independent communication channels over a multimode fiber (MMF). The cross talk among the channels is mitigated electronically. However, by properly employing a lens between the output of a graded-index MMF and the detectors, we achieve mode-selective spatial filtering (MSSF) and optically reduce the cross talk. The robustness of the link is then increased when compared with an implementation without MSSF. This allows for a larger number of channels.
© 2007 Optical Society of America
OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(060.4230) Fiber optics and optical communications : Multiplexing
(070.6110) Fourier optics and signal processing : Spatial filtering
ToC Category:
Fiber Optics and Optical Communications
History
Original Manuscript: December 18, 2006
Revised Manuscript: February 5, 2007
Manuscript Accepted: February 6, 2007
Published: April 3, 2007
Citation
C. P. Tsekrekos and A. M. J. Koonen, "Mode-selective spatial filtering for increased robustness in a mode group diversity multiplexing link," Opt. Lett. 32, 1041-1043 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-9-1041
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