Abstract

We present a novel optical transmission system to experimentally demonstrate the possibility of mode division multiplexing. Its key components are mode multiplexer and demultiplexer based on a programmable liquid crystal on silicon panel, a prototype few-mode fiber, and a 4x4 multiple input multiple output algorithm processing the information of two polarization diversity coherent receivers. Using this system, we transmit two 100Gb/s PDM-QPSK data streams modulated on two different modes of the prototype few-mode fiber. After 40km, we obtain Q2-factors about 1dB above the limit for forward error correction.

©2011 Optical Society of America

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References

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  2. A. Li, A. Al Amin, X. Chen and W. Shieh, “Reception of Mode and Polarization Multiplexed 107-Gb/s CO-OFDM Signal over a Two Mode Fiber,” OFC 2011, Paper PDPB8 (2011).
  3. M. Salsi, C. Koebele, D. Sperti, P. Tran, P. Brindel, H. Mardoyan, S. Bigo, A. Boutin, F. Verluise, P. Sillard, M. Astruc, L. Provost, F. Cerou, G. Charlet, “Transmission at 2x100Gb/s, over Two Modes of 40km-long Prototype Few-Mode Fiber, using LCOS based Mode Multiplexer and Demultiplexer,” OFC 2011, Paper PDPB9 (2011).
  4. R. Ryf, S. Randel, A. H. Gnauck, C. Bolle, R.-J. Essiambre, P. J. Winzer, D. W. Peckham, A. McCurdy, and R. Lingle, Jr., “Space-division multiplexing over 10 km of three-mode fiber using coherent 6×6 MIMO processing,” OFC 2011, Paper PDPB10 (2011).
  5. N. Hanzawa, K. Saitoh, T. Sakamoto, T. Matsui, S. Tomita, and M. Koshiba, “Demonstration of mode-division multiplexing transmission over 10 km two-mode fiber with mode coupler,” OFC 2011, Paper OWA4 (2011).
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J.-F. Cardoso and B. H. Laheld, “Equivariant adaptive source separation,” Trans. Signal Processing 44(12), 3017–3030 (1996).
[Crossref]

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Bai, N.

Bosco, G.

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[Crossref]

Carena, A.

Curri, V.

Forghieri, F.

Huang, M. F.

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J.-F. Cardoso and B. H. Laheld, “Equivariant adaptive source separation,” Trans. Signal Processing 44(12), 3017–3030 (1996).
[Crossref]

Li, G.

Olshansky, R.

Poggiolini, P.

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Appl. Opt. (1)

J. Lightwave Technol. (1)

Opt. Express (1)

Trans. Signal Processing (1)

J.-F. Cardoso and B. H. Laheld, “Equivariant adaptive source separation,” Trans. Signal Processing 44(12), 3017–3030 (1996).
[Crossref]

Other (9)

A. Li, A. Al Amin, X. Chen and W. Shieh, “Reception of Mode and Polarization Multiplexed 107-Gb/s CO-OFDM Signal over a Two Mode Fiber,” OFC 2011, Paper PDPB8 (2011).

M. Salsi, C. Koebele, D. Sperti, P. Tran, P. Brindel, H. Mardoyan, S. Bigo, A. Boutin, F. Verluise, P. Sillard, M. Astruc, L. Provost, F. Cerou, G. Charlet, “Transmission at 2x100Gb/s, over Two Modes of 40km-long Prototype Few-Mode Fiber, using LCOS based Mode Multiplexer and Demultiplexer,” OFC 2011, Paper PDPB9 (2011).

R. Ryf, S. Randel, A. H. Gnauck, C. Bolle, R.-J. Essiambre, P. J. Winzer, D. W. Peckham, A. McCurdy, and R. Lingle, Jr., “Space-division multiplexing over 10 km of three-mode fiber using coherent 6×6 MIMO processing,” OFC 2011, Paper PDPB10 (2011).

N. Hanzawa, K. Saitoh, T. Sakamoto, T. Matsui, S. Tomita, and M. Koshiba, “Demonstration of mode-division multiplexing transmission over 10 km two-mode fiber with mode coupler,” OFC 2011, Paper OWA4 (2011).

C. Koebele, M. Salsi, G. Charlet, S. Bigo, “Nonlinear Effects in Long-Haul Transmission over Bimodal Optical Fibre,” ECOC 2010, Paper Mo.2.C.6 (2010).

G. Stepniak, L. Maksymiuk, and J. Siuzdak, “Increasing Multimode Fiber transmission Capacity by Mode Selective Spatial Light Phase Modulation,” ECOC 2010, Paper P6.03 (2010)

D. Sperti, M. Salsi, C. Koebele, P. Tran, H. Mardoyan, S. Bigo, A. Boutin, P. Sillard, G. Charlet. “Experimental Investigation of Modal Crosstalk using LCOS-based Spatial Light Modulator for Mode Conversion,” ECOC 2011, Paper Th.12.B.2 (2011).

C. Koebele, M. Salsi, D. Sperti, P. Tran, P. Brindel, H. Mardoyan, S. Bigo, A. Boutin, P. Sillard, F. Cerou, G. Charlet, “Two-Mode Transmission with Digital Inter-Modal Cross-Talk Mitigation,” ECOC 2011, Paper Tu.5.B.4 (2011).

P. Sillard, M. Bigot-Astruc, D. Boivin, H. Maerten, L. Provost, “Few-Mode Fiber for Uncoupled Mode-Division Multiplexing Transmissions,” ECOC 2011, Paper Tu.5.LeCervin.7 (2011).

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Figures (9)

Fig. 1
Fig. 1 Experimental set-up

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Fig. 2
Fig. 2 Scheme of 4f correlator

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Fig. 3
Fig. 3 Scheme of mode multiplexer and demultiplexer

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Fig. 4
Fig. 4 Photo of the box containing the mode multiplexer and demultiplexer

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Fig. 5
Fig. 5 Fiber characteristics (a) Selected step-index profile. (b) Normalized propagation constant, B, as a function of normalized frequency, V.

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Fig. 6
Fig. 6 Digital signal processing (a) Equalizer structure. (b) Performance for varying FIR-filter length

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Fig. 7
Fig. 7 Q2-factor versus received power for LP01 mode (back-to-back and 20km FMF transmission) and LP11a+b modes (20km and 40km FMF transmission).

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Fig. 8
Fig. 8 (a) Details of Q2-factor of the 4 mode/polarization tributaries of LP11 after 40km. (b) Schematic representation of the 4 mode/polarization tributaries of LP11.

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Fig. 9
Fig. 9 Transmission of 2 modes (LP11b and LP01) after 40km with varying LP01 power.

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