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

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2006 (2)

C. P. Tsekrekos, A. Martinez, F. M. Huijskens, and A. M. J. Koonen, IEEE Photon. Technol. Lett. 18, 2359 (2006).
[CrossRef]

C. P. Tsekrekos, M. de Boer, A. Martinez, F. M. J. Willems, and A. M. J. Koonen, IEEE Photon. Technol. Lett. 18, 2484 (2006).
[CrossRef]

2005 (2)

2000 (1)

H. R. Stuart, Science 289, 281 (2000).
[CrossRef] [PubMed]

1991 (1)

1982 (1)

1981 (1)

U. Levy, H. Kobrinsky, and A. A. Friesem, IEEE J. Quantum Electron. QE-17, 2215 (1981).
[CrossRef]

Anderson, D. Z.

Berdagué, S.

Bergervoet, J. R. M.

G. W. de Jong, J. R. M. Bergervoet, J. H. A. Brekelmans, and J. F. P. van Mil, in Proceedings of IEEE International Solid-State Circuits Conference (IEEE, 2002), Vol. 1, p. 362.

Brekelmans, J. H. A.

G. W. de Jong, J. R. M. Bergervoet, J. H. A. Brekelmans, and J. F. P. van Mil, in Proceedings of IEEE International Solid-State Circuits Conference (IEEE, 2002), Vol. 1, p. 362.

Ciarlet, P. G.

P. G. Ciarlet, Introduction to Numerical Linear Algebra and Optimisation (Cambridge U. Press, 1989).

de Boer, M.

C. P. Tsekrekos, M. de Boer, A. Martinez, F. M. J. Willems, and A. M. J. Koonen, IEEE Photon. Technol. Lett. 18, 2484 (2006).
[CrossRef]

de Jong, G. W.

G. W. de Jong, J. R. M. Bergervoet, J. H. A. Brekelmans, and J. F. P. van Mil, in Proceedings of IEEE International Solid-State Circuits Conference (IEEE, 2002), Vol. 1, p. 362.

Facq, P.

Friesem, A. A.

U. Levy, H. Kobrinsky, and A. A. Friesem, IEEE J. Quantum Electron. QE-17, 2215 (1981).
[CrossRef]

Horowitz, M. A.

Hsu, R. C. J.

Huijskens, F. M.

C. P. Tsekrekos, A. Martinez, F. M. Huijskens, and A. M. J. Koonen, IEEE Photon. Technol. Lett. 18, 2359 (2006).
[CrossRef]

Jalali, B.

Kahn, J. M.

Kobrinsky, H.

U. Levy, H. Kobrinsky, and A. A. Friesem, IEEE J. Quantum Electron. QE-17, 2215 (1981).
[CrossRef]

Koonen, A. M. J.

C. P. Tsekrekos, A. Martinez, F. M. Huijskens, and A. M. J. Koonen, IEEE Photon. Technol. Lett. 18, 2359 (2006).
[CrossRef]

C. P. Tsekrekos, M. de Boer, A. Martinez, F. M. J. Willems, and A. M. J. Koonen, IEEE Photon. Technol. Lett. 18, 2484 (2006).
[CrossRef]

Levy, U.

U. Levy, H. Kobrinsky, and A. A. Friesem, IEEE J. Quantum Electron. QE-17, 2215 (1981).
[CrossRef]

Martinez, A.

C. P. Tsekrekos, M. de Boer, A. Martinez, F. M. J. Willems, and A. M. J. Koonen, IEEE Photon. Technol. Lett. 18, 2484 (2006).
[CrossRef]

C. P. Tsekrekos, A. Martinez, F. M. Huijskens, and A. M. J. Koonen, IEEE Photon. Technol. Lett. 18, 2359 (2006).
[CrossRef]

Saffman, M.

Sayed, A. H.

Shah, A. R.

Shen, X.

Stuart, H. R.

H. R. Stuart, Science 289, 281 (2000).
[CrossRef] [PubMed]

Tarighat, A.

Tsekrekos, C. P.

C. P. Tsekrekos, A. Martinez, F. M. Huijskens, and A. M. J. Koonen, IEEE Photon. Technol. Lett. 18, 2359 (2006).
[CrossRef]

C. P. Tsekrekos, M. de Boer, A. Martinez, F. M. J. Willems, and A. M. J. Koonen, IEEE Photon. Technol. Lett. 18, 2484 (2006).
[CrossRef]

van Mil, J. F. P.

G. W. de Jong, J. R. M. Bergervoet, J. H. A. Brekelmans, and J. F. P. van Mil, in Proceedings of IEEE International Solid-State Circuits Conference (IEEE, 2002), Vol. 1, p. 362.

Willems, F. M. J.

C. P. Tsekrekos, M. de Boer, A. Martinez, F. M. J. Willems, and A. M. J. Koonen, IEEE Photon. Technol. Lett. 18, 2484 (2006).
[CrossRef]

Appl. Opt. (1)

IEEE J. Quantum Electron. (1)

U. Levy, H. Kobrinsky, and A. A. Friesem, IEEE J. Quantum Electron. QE-17, 2215 (1981).
[CrossRef]

IEEE Photon. Technol. Lett. (2)

C. P. Tsekrekos, A. Martinez, F. M. Huijskens, and A. M. J. Koonen, IEEE Photon. Technol. Lett. 18, 2359 (2006).
[CrossRef]

C. P. Tsekrekos, M. de Boer, A. Martinez, F. M. J. Willems, and A. M. J. Koonen, IEEE Photon. Technol. Lett. 18, 2484 (2006).
[CrossRef]

J. Lightwave Technol. (1)

Opt. Lett. (2)

Science (1)

H. R. Stuart, Science 289, 281 (2000).
[CrossRef] [PubMed]

Other (2)

P. G. Ciarlet, Introduction to Numerical Linear Algebra and Optimisation (Cambridge U. Press, 1989).

G. W. de Jong, J. R. M. Bergervoet, J. H. A. Brekelmans, and J. F. P. van Mil, in Proceedings of IEEE International Solid-State Circuits Conference (IEEE, 2002), Vol. 1, p. 362.

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Figures (4)

Fig. 1
Fig. 1

(a) Geometry of a three-segment detector for a 3 × 3 MGDM link.[7] (b) Two propagating rays in a GI-MMF. (c) Three input beams with different radial offset at the GI-MMF input. (d) A lens projects light at the GI-MMF output onto a multisegment detector.

Fig. 2
Fig. 2

Experimental setup for the investigation of a 2 × 2 MGDM link with MSSF. (a) Transmitting side. (b) Observation of the NFP at the output of a GI-MMF. (c) Receiving side.

Fig. 3
Fig. 3

Observed NFP at the output of a GI-MMF, using different microscope objectives, when light propagates in LOMs and HOMs.

Fig. 4
Fig. 4

Measured H ( t ) of a 2 × 2 MSSF-MGDM link, over a 25 h period, using (a) a 10 m long 185 250 μ m and (b) a 2 km long 148 200 μ m GI-MMF. The temperature changes during this period are shown as well. The geometry at the receiving side of the link is also illustrated, where gray indicates the core of the GI-MMF and black the PDIC photodiodes (PDs).

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