Abstract

We experimentally demonstrate an adaptive-optics-based approach that allows selective excitation of waveguide modes and their mixtures in a two-mode fiber (TMF). A phase-only spatial light modulator is used for wavefront control, using feedback signals provided by the correlation between the experimentally measured field distribution and the desired mode profiles. Experimental results show the optical field within the TMF can be shaped to be pure linearly polarized (LP) modes or their combinations. Analysis shows selective mode excitation can be achieved using only 5 × 5 independent phase blocks. With proper feedback signals, this method should enable one to precisely control the optical field within any multimode fiber or other types of waveguides in real time.

© 2014 Optical Society of America

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  1. P. J. Winzer, “Optical networking beyond WDM,” IEEE Photonics J. 4(2), 647–651 (2012).
    [CrossRef]
  2. R.-J. Essiambre, R. Ryf, N. K. Fontaine, S. Randel, “Breakthroughs in photonics 2012: Space-division multiplexing in multimode and multicore fibers for high-capacity optical communication,” IEEE Photonics J. 5(2), 0701307 (2013).
    [CrossRef]
  3. D. J. Richardson, J. M. Fini, L. E. Nelson, “Space-division multiplexing in optical fibres,” Nat. Photonics 7(5), 354–362 (2013).
    [CrossRef]
  4. P. P. Mitra, J. B. Stark, “Nonlinear limits to the information capacity of optical fibre communications,” Nature 411(6841), 1027–1030 (2001).
    [CrossRef] [PubMed]
  5. R.-J. Essiambre, G. Kramer, P. J. Winzer, G. J. Foschini, B. Goebel, “Capacity limits of optical fiber networks,” J. Lightwave Technol. 28(4), 662–701 (2010).
    [CrossRef]
  6. A. Li, A. Al Amin, X. Chen, and W. Shieh, “Reception of mode and polarization multiplexed 107-Gb/s COOFDM signal over a two-mode fiber,” in Proc. Optical Fiber Communication Conference (OFC/NFOEC’11) (2011), PDPB8.
  7. R. Ryf, N. K. Fontaine, and R.-J. Essiambre, “Spot-based mode coupler for mode-multiplexed transmission in few mode fiber,” in Proc. IEEE Summer Topical (2012), TuC3.2.
  8. H. Bulow, H. Al Hashimi, and B. Schmauss, “Spatial-mode multiplexers and MIMO processing,” in Proc. Opto-Electronics and Communication Conference (OECC 2012) (2012), 5E4–1.
  9. S. G. Leon-Saval, A. Argyros, J. Bland-Hawthorn, “Photonic lanterns: A study of light propagation in multimode to single-mode converters,” Opt. Express 18(8), 8430–8439 (2010).
    [CrossRef] [PubMed]
  10. N. K. Fontaine, R. Ryf, S. G. Leon-Saval, and J. Bland-Hawthorn, “Evaluation of photonic lanterns for lossless mode-multiplexing,” in Proc. European Conference on Optical Communication (ECOC’12) (2012), Th.2.D.6.
  11. R. Ryf, N. K. Fontaine, M. A. Mestre, S. Randel, X. Palou, C. Bolle, A. H. Gnauck, S. Chandrasekhar, X. Liu, B. Guan, R.-J. Essiambre, P. J. Winzer, S. Leon-Saval, J. Bland-Hawthorn, R. Delbue, P. Pupalaikis, A. Sureka, Y. Sun, L. Grüner-Nielsen, R. V. Jensen, and R. Lingle, “12 x 12 MIMO transmission over 130-km few-mode fiber,” in Proc. Frontiers in Optics Conference (FiO’12) (2012), FW6C.4.
  12. S. Berdagué, P. Facq, “Mode division multiplexing in optical fibers,” Appl. Opt. 21(11), 1950–1955 (1982).
    [CrossRef] [PubMed]
  13. N. Bai, E. Ip, Y.-K. Huang, E. Mateo, F. Yaman, M.-J. Li, S. Bickham, S. Ten, J. Liñares, C. Montero, V. Moreno, X. Prieto, V. Tse, K. Man Chung, A. P. T. Lau, H.-Y. Tam, C. Lu, Y. Luo, G.-D. Peng, G. Li, T. Wang, “Mode-division multiplexed transmission with inline few-mode fiber amplifier,” Opt. Express 20(3), 2668–2680 (2012).
    [CrossRef] [PubMed]
  14. D. Sperti, M. Salsi, C. Koebele, P. Tran, H. Mardoyan, S. Bigo, A. Boutin, P. Sillard, and G. Charlet, “Experimental investigation of modal crosstalk using LCOS-based spatial light modulator for mode conversion,” in Proc. European Conference on Optical Communications 2011 (ECOC 2011) (2011), Th.12.B.2.
  15. J. Carpenter, T. D. Wilkinson, “Graphics processing unit–accelerated holography by simulated annealing,” Opt. Eng. 49(9), 095801 (2010).
    [CrossRef]
  16. J. Carpenter, T. D. Wilkinson, “All-optical mode multiplexing using holography and multimode fiber couplers,” J. Lightwave Technol. 30(12), 1978–1984 (2012).
    [CrossRef]
  17. J. Carpenter, B. C. Thomsen, T. D. Wilkinson, “Degenerate mode-group division multiplexing,” J. Lightwave Technol. 30(24), 3946–3952 (2012).
    [CrossRef]
  18. J. von Hoyningen-Huene, R. Ryf, P. Winzer, “LCoS-based mode shaper for few-mode fiber,” Opt. Express 21(15), 18097–18110 (2013).
    [CrossRef] [PubMed]
  19. I. M. Vellekoop, A. P. Mosk, “Focusing coherent light through opaque strongly scattering media,” Opt. Lett. 32(16), 2309–2311 (2007).
    [CrossRef] [PubMed]
  20. I. M. Vellekoop, A. P. Mosk, “Phase control algorithms for focusing light through turbid media,” Opt. Commun. 281(11), 3071–3080 (2008).
    [CrossRef]
  21. S. M. Popoff, G. Lerosey, R. Carminati, M. Fink, A. C. Boccara, S. Gigan, “Measuring the transmission matrix in optics: an approach to the study and control of light propagation in disordered media,” Phys. Rev. Lett. 104(10), 100601 (2010).
    [CrossRef] [PubMed]
  22. M. Cui, “Parallel wavefront optimization method for focusing light through random scattering media,” Opt. Lett. 36(6), 870–872 (2011).
    [CrossRef] [PubMed]
  23. R. Di Leonardo, S. Bianchi, “Hologram transmission through multi-mode optical fibers,” Opt. Express 19(1), 247–254 (2011).
    [CrossRef] [PubMed]
  24. D. B. Conkey, A. M. Caravaca-Aguirre, R. Piestun, “High-speed scattering medium characterization with application to focusing light through turbid media,” Opt. Express 20(2), 1733–1740 (2012).
    [CrossRef] [PubMed]
  25. R. N. Mahalati, D. Askarov, J. P. Wilde, J. M. Kahn, “Adaptive control of input field to achieve desired output intensity profile in multimode fiber with random mode coupling,” Opt. Express 20(13), 14321–14337 (2012).
    [CrossRef] [PubMed]
  26. C. Stockbridge, Y. Lu, J. Moore, S. Hoffman, R. Paxman, K. Toussaint, T. Bifano, “Focusing through dynamic scattering media,” Opt. Express 20(14), 15086–15092 (2012).
    [CrossRef] [PubMed]
  27. A. M. Caravaca-Aguirre, E. Niv, D. B. Conkey, R. Piestun, “Real-time resilient focusing through a bending multimode fiber,” Opt. Express 21(10), 12881–12887 (2013).
    [CrossRef] [PubMed]
  28. I. M. Vellekoop, C. M. Aegerter, “Scattered light fluorescence microscopy: imaging through turbid layers,” Opt. Lett. 35(8), 1245–1247 (2010).
    [CrossRef] [PubMed]
  29. G. Ghielmetti, C. M. Aegerter, “Scattered light fluorescence microscopy in three dimensions,” Opt. Express 20(4), 3744–3752 (2012).
    [CrossRef] [PubMed]
  30. T. Čižmár, K. Dholakia, “Exploiting multimode waveguides for pure fiber-based imaging,” Nat. Commun. 3, 1027 (2012).
    [CrossRef]
  31. R. N. Mahalati, R. Y. Gu, J. M. Kahn, “Resolution limits for imaging through multi-mode fiber,” Opt. Express 21(2), 1656–1668 (2013).
    [CrossRef] [PubMed]
  32. T. Čižmár, K. Dholakia, “Shaping the light transmission through a multimode optical fibre: complex transformation analysis and applications in biophotonics,” Opt. Express 19(20), 18871–18884 (2011).
    [CrossRef] [PubMed]

2013 (5)

R.-J. Essiambre, R. Ryf, N. K. Fontaine, S. Randel, “Breakthroughs in photonics 2012: Space-division multiplexing in multimode and multicore fibers for high-capacity optical communication,” IEEE Photonics J. 5(2), 0701307 (2013).
[CrossRef]

D. J. Richardson, J. M. Fini, L. E. Nelson, “Space-division multiplexing in optical fibres,” Nat. Photonics 7(5), 354–362 (2013).
[CrossRef]

R. N. Mahalati, R. Y. Gu, J. M. Kahn, “Resolution limits for imaging through multi-mode fiber,” Opt. Express 21(2), 1656–1668 (2013).
[CrossRef] [PubMed]

A. M. Caravaca-Aguirre, E. Niv, D. B. Conkey, R. Piestun, “Real-time resilient focusing through a bending multimode fiber,” Opt. Express 21(10), 12881–12887 (2013).
[CrossRef] [PubMed]

J. von Hoyningen-Huene, R. Ryf, P. Winzer, “LCoS-based mode shaper for few-mode fiber,” Opt. Express 21(15), 18097–18110 (2013).
[CrossRef] [PubMed]

2012 (9)

P. J. Winzer, “Optical networking beyond WDM,” IEEE Photonics J. 4(2), 647–651 (2012).
[CrossRef]

T. Čižmár, K. Dholakia, “Exploiting multimode waveguides for pure fiber-based imaging,” Nat. Commun. 3, 1027 (2012).
[CrossRef]

D. B. Conkey, A. M. Caravaca-Aguirre, R. Piestun, “High-speed scattering medium characterization with application to focusing light through turbid media,” Opt. Express 20(2), 1733–1740 (2012).
[CrossRef] [PubMed]

N. Bai, E. Ip, Y.-K. Huang, E. Mateo, F. Yaman, M.-J. Li, S. Bickham, S. Ten, J. Liñares, C. Montero, V. Moreno, X. Prieto, V. Tse, K. Man Chung, A. P. T. Lau, H.-Y. Tam, C. Lu, Y. Luo, G.-D. Peng, G. Li, T. Wang, “Mode-division multiplexed transmission with inline few-mode fiber amplifier,” Opt. Express 20(3), 2668–2680 (2012).
[CrossRef] [PubMed]

G. Ghielmetti, C. M. Aegerter, “Scattered light fluorescence microscopy in three dimensions,” Opt. Express 20(4), 3744–3752 (2012).
[CrossRef] [PubMed]

R. N. Mahalati, D. Askarov, J. P. Wilde, J. M. Kahn, “Adaptive control of input field to achieve desired output intensity profile in multimode fiber with random mode coupling,” Opt. Express 20(13), 14321–14337 (2012).
[CrossRef] [PubMed]

C. Stockbridge, Y. Lu, J. Moore, S. Hoffman, R. Paxman, K. Toussaint, T. Bifano, “Focusing through dynamic scattering media,” Opt. Express 20(14), 15086–15092 (2012).
[CrossRef] [PubMed]

J. Carpenter, T. D. Wilkinson, “All-optical mode multiplexing using holography and multimode fiber couplers,” J. Lightwave Technol. 30(12), 1978–1984 (2012).
[CrossRef]

J. Carpenter, B. C. Thomsen, T. D. Wilkinson, “Degenerate mode-group division multiplexing,” J. Lightwave Technol. 30(24), 3946–3952 (2012).
[CrossRef]

2011 (3)

2010 (5)

R.-J. Essiambre, G. Kramer, P. J. Winzer, G. J. Foschini, B. Goebel, “Capacity limits of optical fiber networks,” J. Lightwave Technol. 28(4), 662–701 (2010).
[CrossRef]

S. G. Leon-Saval, A. Argyros, J. Bland-Hawthorn, “Photonic lanterns: A study of light propagation in multimode to single-mode converters,” Opt. Express 18(8), 8430–8439 (2010).
[CrossRef] [PubMed]

I. M. Vellekoop, C. M. Aegerter, “Scattered light fluorescence microscopy: imaging through turbid layers,” Opt. Lett. 35(8), 1245–1247 (2010).
[CrossRef] [PubMed]

S. M. Popoff, G. Lerosey, R. Carminati, M. Fink, A. C. Boccara, S. Gigan, “Measuring the transmission matrix in optics: an approach to the study and control of light propagation in disordered media,” Phys. Rev. Lett. 104(10), 100601 (2010).
[CrossRef] [PubMed]

J. Carpenter, T. D. Wilkinson, “Graphics processing unit–accelerated holography by simulated annealing,” Opt. Eng. 49(9), 095801 (2010).
[CrossRef]

2008 (1)

I. M. Vellekoop, A. P. Mosk, “Phase control algorithms for focusing light through turbid media,” Opt. Commun. 281(11), 3071–3080 (2008).
[CrossRef]

2007 (1)

2001 (1)

P. P. Mitra, J. B. Stark, “Nonlinear limits to the information capacity of optical fibre communications,” Nature 411(6841), 1027–1030 (2001).
[CrossRef] [PubMed]

1982 (1)

Aegerter, C. M.

Argyros, A.

Askarov, D.

Bai, N.

Berdagué, S.

Bianchi, S.

Bickham, S.

Bifano, T.

Bland-Hawthorn, J.

Boccara, A. C.

S. M. Popoff, G. Lerosey, R. Carminati, M. Fink, A. C. Boccara, S. Gigan, “Measuring the transmission matrix in optics: an approach to the study and control of light propagation in disordered media,” Phys. Rev. Lett. 104(10), 100601 (2010).
[CrossRef] [PubMed]

Caravaca-Aguirre, A. M.

Carminati, R.

S. M. Popoff, G. Lerosey, R. Carminati, M. Fink, A. C. Boccara, S. Gigan, “Measuring the transmission matrix in optics: an approach to the study and control of light propagation in disordered media,” Phys. Rev. Lett. 104(10), 100601 (2010).
[CrossRef] [PubMed]

Carpenter, J.

Cižmár, T.

Conkey, D. B.

Cui, M.

Dholakia, K.

Di Leonardo, R.

Essiambre, R.-J.

R.-J. Essiambre, R. Ryf, N. K. Fontaine, S. Randel, “Breakthroughs in photonics 2012: Space-division multiplexing in multimode and multicore fibers for high-capacity optical communication,” IEEE Photonics J. 5(2), 0701307 (2013).
[CrossRef]

R.-J. Essiambre, G. Kramer, P. J. Winzer, G. J. Foschini, B. Goebel, “Capacity limits of optical fiber networks,” J. Lightwave Technol. 28(4), 662–701 (2010).
[CrossRef]

Facq, P.

Fini, J. M.

D. J. Richardson, J. M. Fini, L. E. Nelson, “Space-division multiplexing in optical fibres,” Nat. Photonics 7(5), 354–362 (2013).
[CrossRef]

Fink, M.

S. M. Popoff, G. Lerosey, R. Carminati, M. Fink, A. C. Boccara, S. Gigan, “Measuring the transmission matrix in optics: an approach to the study and control of light propagation in disordered media,” Phys. Rev. Lett. 104(10), 100601 (2010).
[CrossRef] [PubMed]

Fontaine, N. K.

R.-J. Essiambre, R. Ryf, N. K. Fontaine, S. Randel, “Breakthroughs in photonics 2012: Space-division multiplexing in multimode and multicore fibers for high-capacity optical communication,” IEEE Photonics J. 5(2), 0701307 (2013).
[CrossRef]

Foschini, G. J.

Ghielmetti, G.

Gigan, S.

S. M. Popoff, G. Lerosey, R. Carminati, M. Fink, A. C. Boccara, S. Gigan, “Measuring the transmission matrix in optics: an approach to the study and control of light propagation in disordered media,” Phys. Rev. Lett. 104(10), 100601 (2010).
[CrossRef] [PubMed]

Goebel, B.

Gu, R. Y.

Hoffman, S.

Huang, Y.-K.

Ip, E.

Kahn, J. M.

Kramer, G.

Lau, A. P. T.

Leon-Saval, S. G.

Lerosey, G.

S. M. Popoff, G. Lerosey, R. Carminati, M. Fink, A. C. Boccara, S. Gigan, “Measuring the transmission matrix in optics: an approach to the study and control of light propagation in disordered media,” Phys. Rev. Lett. 104(10), 100601 (2010).
[CrossRef] [PubMed]

Li, G.

Li, M.-J.

Liñares, J.

Lu, C.

Lu, Y.

Luo, Y.

Mahalati, R. N.

Man Chung, K.

Mateo, E.

Mitra, P. P.

P. P. Mitra, J. B. Stark, “Nonlinear limits to the information capacity of optical fibre communications,” Nature 411(6841), 1027–1030 (2001).
[CrossRef] [PubMed]

Montero, C.

Moore, J.

Moreno, V.

Mosk, A. P.

I. M. Vellekoop, A. P. Mosk, “Phase control algorithms for focusing light through turbid media,” Opt. Commun. 281(11), 3071–3080 (2008).
[CrossRef]

I. M. Vellekoop, A. P. Mosk, “Focusing coherent light through opaque strongly scattering media,” Opt. Lett. 32(16), 2309–2311 (2007).
[CrossRef] [PubMed]

Nelson, L. E.

D. J. Richardson, J. M. Fini, L. E. Nelson, “Space-division multiplexing in optical fibres,” Nat. Photonics 7(5), 354–362 (2013).
[CrossRef]

Niv, E.

Paxman, R.

Peng, G.-D.

Piestun, R.

Popoff, S. M.

S. M. Popoff, G. Lerosey, R. Carminati, M. Fink, A. C. Boccara, S. Gigan, “Measuring the transmission matrix in optics: an approach to the study and control of light propagation in disordered media,” Phys. Rev. Lett. 104(10), 100601 (2010).
[CrossRef] [PubMed]

Prieto, X.

Randel, S.

R.-J. Essiambre, R. Ryf, N. K. Fontaine, S. Randel, “Breakthroughs in photonics 2012: Space-division multiplexing in multimode and multicore fibers for high-capacity optical communication,” IEEE Photonics J. 5(2), 0701307 (2013).
[CrossRef]

Richardson, D. J.

D. J. Richardson, J. M. Fini, L. E. Nelson, “Space-division multiplexing in optical fibres,” Nat. Photonics 7(5), 354–362 (2013).
[CrossRef]

Ryf, R.

R.-J. Essiambre, R. Ryf, N. K. Fontaine, S. Randel, “Breakthroughs in photonics 2012: Space-division multiplexing in multimode and multicore fibers for high-capacity optical communication,” IEEE Photonics J. 5(2), 0701307 (2013).
[CrossRef]

J. von Hoyningen-Huene, R. Ryf, P. Winzer, “LCoS-based mode shaper for few-mode fiber,” Opt. Express 21(15), 18097–18110 (2013).
[CrossRef] [PubMed]

Stark, J. B.

P. P. Mitra, J. B. Stark, “Nonlinear limits to the information capacity of optical fibre communications,” Nature 411(6841), 1027–1030 (2001).
[CrossRef] [PubMed]

Stockbridge, C.

Tam, H.-Y.

Ten, S.

Thomsen, B. C.

Toussaint, K.

Tse, V.

Vellekoop, I. M.

von Hoyningen-Huene, J.

Wang, T.

Wilde, J. P.

Wilkinson, T. D.

Winzer, P.

Winzer, P. J.

Yaman, F.

Appl. Opt. (1)

IEEE Photonics J. (2)

P. J. Winzer, “Optical networking beyond WDM,” IEEE Photonics J. 4(2), 647–651 (2012).
[CrossRef]

R.-J. Essiambre, R. Ryf, N. K. Fontaine, S. Randel, “Breakthroughs in photonics 2012: Space-division multiplexing in multimode and multicore fibers for high-capacity optical communication,” IEEE Photonics J. 5(2), 0701307 (2013).
[CrossRef]

J. Lightwave Technol. (3)

Nat. Commun. (1)

T. Čižmár, K. Dholakia, “Exploiting multimode waveguides for pure fiber-based imaging,” Nat. Commun. 3, 1027 (2012).
[CrossRef]

Nat. Photonics (1)

D. J. Richardson, J. M. Fini, L. E. Nelson, “Space-division multiplexing in optical fibres,” Nat. Photonics 7(5), 354–362 (2013).
[CrossRef]

Nature (1)

P. P. Mitra, J. B. Stark, “Nonlinear limits to the information capacity of optical fibre communications,” Nature 411(6841), 1027–1030 (2001).
[CrossRef] [PubMed]

Opt. Commun. (1)

I. M. Vellekoop, A. P. Mosk, “Phase control algorithms for focusing light through turbid media,” Opt. Commun. 281(11), 3071–3080 (2008).
[CrossRef]

Opt. Eng. (1)

J. Carpenter, T. D. Wilkinson, “Graphics processing unit–accelerated holography by simulated annealing,” Opt. Eng. 49(9), 095801 (2010).
[CrossRef]

Opt. Express (11)

S. G. Leon-Saval, A. Argyros, J. Bland-Hawthorn, “Photonic lanterns: A study of light propagation in multimode to single-mode converters,” Opt. Express 18(8), 8430–8439 (2010).
[CrossRef] [PubMed]

R. N. Mahalati, R. Y. Gu, J. M. Kahn, “Resolution limits for imaging through multi-mode fiber,” Opt. Express 21(2), 1656–1668 (2013).
[CrossRef] [PubMed]

A. M. Caravaca-Aguirre, E. Niv, D. B. Conkey, R. Piestun, “Real-time resilient focusing through a bending multimode fiber,” Opt. Express 21(10), 12881–12887 (2013).
[CrossRef] [PubMed]

J. von Hoyningen-Huene, R. Ryf, P. Winzer, “LCoS-based mode shaper for few-mode fiber,” Opt. Express 21(15), 18097–18110 (2013).
[CrossRef] [PubMed]

T. Čižmár, K. Dholakia, “Shaping the light transmission through a multimode optical fibre: complex transformation analysis and applications in biophotonics,” Opt. Express 19(20), 18871–18884 (2011).
[CrossRef] [PubMed]

D. B. Conkey, A. M. Caravaca-Aguirre, R. Piestun, “High-speed scattering medium characterization with application to focusing light through turbid media,” Opt. Express 20(2), 1733–1740 (2012).
[CrossRef] [PubMed]

N. Bai, E. Ip, Y.-K. Huang, E. Mateo, F. Yaman, M.-J. Li, S. Bickham, S. Ten, J. Liñares, C. Montero, V. Moreno, X. Prieto, V. Tse, K. Man Chung, A. P. T. Lau, H.-Y. Tam, C. Lu, Y. Luo, G.-D. Peng, G. Li, T. Wang, “Mode-division multiplexed transmission with inline few-mode fiber amplifier,” Opt. Express 20(3), 2668–2680 (2012).
[CrossRef] [PubMed]

G. Ghielmetti, C. M. Aegerter, “Scattered light fluorescence microscopy in three dimensions,” Opt. Express 20(4), 3744–3752 (2012).
[CrossRef] [PubMed]

R. N. Mahalati, D. Askarov, J. P. Wilde, J. M. Kahn, “Adaptive control of input field to achieve desired output intensity profile in multimode fiber with random mode coupling,” Opt. Express 20(13), 14321–14337 (2012).
[CrossRef] [PubMed]

C. Stockbridge, Y. Lu, J. Moore, S. Hoffman, R. Paxman, K. Toussaint, T. Bifano, “Focusing through dynamic scattering media,” Opt. Express 20(14), 15086–15092 (2012).
[CrossRef] [PubMed]

R. Di Leonardo, S. Bianchi, “Hologram transmission through multi-mode optical fibers,” Opt. Express 19(1), 247–254 (2011).
[CrossRef] [PubMed]

Opt. Lett. (3)

Phys. Rev. Lett. (1)

S. M. Popoff, G. Lerosey, R. Carminati, M. Fink, A. C. Boccara, S. Gigan, “Measuring the transmission matrix in optics: an approach to the study and control of light propagation in disordered media,” Phys. Rev. Lett. 104(10), 100601 (2010).
[CrossRef] [PubMed]

Other (6)

A. Li, A. Al Amin, X. Chen, and W. Shieh, “Reception of mode and polarization multiplexed 107-Gb/s COOFDM signal over a two-mode fiber,” in Proc. Optical Fiber Communication Conference (OFC/NFOEC’11) (2011), PDPB8.

R. Ryf, N. K. Fontaine, and R.-J. Essiambre, “Spot-based mode coupler for mode-multiplexed transmission in few mode fiber,” in Proc. IEEE Summer Topical (2012), TuC3.2.

H. Bulow, H. Al Hashimi, and B. Schmauss, “Spatial-mode multiplexers and MIMO processing,” in Proc. Opto-Electronics and Communication Conference (OECC 2012) (2012), 5E4–1.

N. K. Fontaine, R. Ryf, S. G. Leon-Saval, and J. Bland-Hawthorn, “Evaluation of photonic lanterns for lossless mode-multiplexing,” in Proc. European Conference on Optical Communication (ECOC’12) (2012), Th.2.D.6.

R. Ryf, N. K. Fontaine, M. A. Mestre, S. Randel, X. Palou, C. Bolle, A. H. Gnauck, S. Chandrasekhar, X. Liu, B. Guan, R.-J. Essiambre, P. J. Winzer, S. Leon-Saval, J. Bland-Hawthorn, R. Delbue, P. Pupalaikis, A. Sureka, Y. Sun, L. Grüner-Nielsen, R. V. Jensen, and R. Lingle, “12 x 12 MIMO transmission over 130-km few-mode fiber,” in Proc. Frontiers in Optics Conference (FiO’12) (2012), FW6C.4.

D. Sperti, M. Salsi, C. Koebele, P. Tran, H. Mardoyan, S. Bigo, A. Boutin, P. Sillard, and G. Charlet, “Experimental investigation of modal crosstalk using LCOS-based spatial light modulator for mode conversion,” in Proc. European Conference on Optical Communications 2011 (ECOC 2011) (2011), Th.12.B.2.

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