Abstract

We designed an optical add/drop multiplexer for orbital-angular-momentum (OAM)-multiplexed data links by taking advantage of the ring-shaped intensity profile of OAM beams. We demonstrated adding/dropping a single OAM beam from three multiplexed OAM beams using liquid-crystal-on-silicon-based diffraction optical elements. For multiplexed OAM beams carrying 100Gbit/s quadrature phase-shift-keying data, a power penalty of <2dB is observed to achieve a bit-error rate of 2.0×103 for each channel of the add/drop multiplexer.

© 2013 Optical Society of America

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2013 (5)

P. Boffi, P. Martelli, A. Gatto, and M. Martinelli, J. Opt. 15, 075403 (2013).
[CrossRef]

N. Bozinovic, Y. Yue, Y. Ren, M. Tur, P. Kristensen, H. Huang, A. Willner, and S. Ramachandran, Science 340, 1545 (2013).
[CrossRef]

D. J. Richardson, J. M. Fini, and L. E. Nelson, Nat. Photonics 7, 354 (2013).
[CrossRef]

D. A. B. Miller, Opt. Express 21, 20220 (2013).
[CrossRef]

X. Chen, A. Li, J. Ye, A. Al Amin, and W. Shieh, J. Lightwave Technol. 31, 641 (2013).
[CrossRef]

2012 (1)

J. Wang, J. Y. Yang, I. M. Fazal, N. Ahmed, Y. Yan, H. Huang, Y. Ren, Y. Yue, S. Dolinar, M. Tur, and A. E. Willner, Nat. Photonics 6, 488 (2012).
[CrossRef]

2008 (1)

J. Homa and K. Bala, IEEE Commun. Mag. 46, 150 (2008).
[CrossRef]

2006 (1)

2005 (1)

2004 (1)

Abedin, K. S.

M. D. Feuer, L. Nelson, K. S. Abedin, X. Zhou, T. F. Taunay, J. F. Fini, B. Zhu, R. Isaac, R. Harel, G. Cohen, and D. M. Marom, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper PDP5B.8.

Ahmed, N.

J. Wang, J. Y. Yang, I. M. Fazal, N. Ahmed, Y. Yan, H. Huang, Y. Ren, Y. Yue, S. Dolinar, M. Tur, and A. E. Willner, Nat. Photonics 6, 488 (2012).
[CrossRef]

H. Huang, G. Xie, Y. Yan, N. Ahmed, Y. Ren, Y. Yue, D. Rogawski, M. Tur, B. Erkmen, K. Birnbaum, S. Dolinar, M. Lavery, M. Padgett, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (Optical Society of America, 2013), paper OTh4G.5.

Y. Yue, N. Ahmed, H. Huang, Y. Yan, Y. Ren, D. Rogawski, and A. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper OM2G.1.

H. Huang, Y. Yue, Y. Yan, N. Ahmed, Y. Ren, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper OTh4G.4.

Al Amin, A.

Awaji, Y.

Y. Awaji, N. Wada, and Y. Toda, in Proceedings of the IEEE Photonics Conference (IEEE Photonics Society, 2010), paper WBB2.

Bala, K.

J. Homa and K. Bala, IEEE Commun. Mag. 46, 150 (2008).
[CrossRef]

Barnett, S.

Birnbaum, K.

H. Huang, G. Xie, Y. Yan, N. Ahmed, Y. Ren, Y. Yue, D. Rogawski, M. Tur, B. Erkmen, K. Birnbaum, S. Dolinar, M. Lavery, M. Padgett, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (Optical Society of America, 2013), paper OTh4G.5.

Boffi, P.

P. Boffi, P. Martelli, A. Gatto, and M. Martinelli, J. Opt. 15, 075403 (2013).
[CrossRef]

Bozinovic, N.

N. Bozinovic, Y. Yue, Y. Ren, M. Tur, P. Kristensen, H. Huang, A. Willner, and S. Ramachandran, Science 340, 1545 (2013).
[CrossRef]

Chen, X.

Cohen, G.

M. D. Feuer, L. Nelson, K. S. Abedin, X. Zhou, T. F. Taunay, J. F. Fini, B. Zhu, R. Isaac, R. Harel, G. Cohen, and D. M. Marom, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper PDP5B.8.

Courtial, J.

Dolinar, S.

J. Wang, J. Y. Yang, I. M. Fazal, N. Ahmed, Y. Yan, H. Huang, Y. Ren, Y. Yue, S. Dolinar, M. Tur, and A. E. Willner, Nat. Photonics 6, 488 (2012).
[CrossRef]

H. Huang, G. Xie, Y. Yan, N. Ahmed, Y. Ren, Y. Yue, D. Rogawski, M. Tur, B. Erkmen, K. Birnbaum, S. Dolinar, M. Lavery, M. Padgett, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (Optical Society of America, 2013), paper OTh4G.5.

Erkmen, B.

H. Huang, G. Xie, Y. Yan, N. Ahmed, Y. Ren, Y. Yue, D. Rogawski, M. Tur, B. Erkmen, K. Birnbaum, S. Dolinar, M. Lavery, M. Padgett, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (Optical Society of America, 2013), paper OTh4G.5.

Erkmen, B. I.

Ertel, J.

Fazal, I. M.

J. Wang, J. Y. Yang, I. M. Fazal, N. Ahmed, Y. Yan, H. Huang, Y. Ren, Y. Yue, S. Dolinar, M. Tur, and A. E. Willner, Nat. Photonics 6, 488 (2012).
[CrossRef]

Feuer, M. D.

M. D. Feuer, L. Nelson, K. S. Abedin, X. Zhou, T. F. Taunay, J. F. Fini, B. Zhu, R. Isaac, R. Harel, G. Cohen, and D. M. Marom, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper PDP5B.8.

Fini, J. F.

M. D. Feuer, L. Nelson, K. S. Abedin, X. Zhou, T. F. Taunay, J. F. Fini, B. Zhu, R. Isaac, R. Harel, G. Cohen, and D. M. Marom, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper PDP5B.8.

Fini, J. M.

D. J. Richardson, J. M. Fini, and L. E. Nelson, Nat. Photonics 7, 354 (2013).
[CrossRef]

Franke-Arnold, S.

Frisken, S.

S. Frisken, in Optical Fiber Communication Conference and Exposition and The National Fiber Optic Engineers Conference, OSA Technical Digest (CD) (Optical Society of America, 2007), paper OWV4.

Gatto, A.

P. Boffi, P. Martelli, A. Gatto, and M. Martinelli, J. Opt. 15, 075403 (2013).
[CrossRef]

Gibson, G.

Goodman, J. W.

J. W. Goodman, Introductions to Fourier Optics (Roberts, 2005).

Guha, S.

Harel, R.

M. D. Feuer, L. Nelson, K. S. Abedin, X. Zhou, T. F. Taunay, J. F. Fini, B. Zhu, R. Isaac, R. Harel, G. Cohen, and D. M. Marom, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper PDP5B.8.

Helbing, R.

Hoke, C.

Homa, J.

J. Homa and K. Bala, IEEE Commun. Mag. 46, 150 (2008).
[CrossRef]

Huang, H.

N. Bozinovic, Y. Yue, Y. Ren, M. Tur, P. Kristensen, H. Huang, A. Willner, and S. Ramachandran, Science 340, 1545 (2013).
[CrossRef]

J. Wang, J. Y. Yang, I. M. Fazal, N. Ahmed, Y. Yan, H. Huang, Y. Ren, Y. Yue, S. Dolinar, M. Tur, and A. E. Willner, Nat. Photonics 6, 488 (2012).
[CrossRef]

H. Huang, G. Xie, Y. Yan, N. Ahmed, Y. Ren, Y. Yue, D. Rogawski, M. Tur, B. Erkmen, K. Birnbaum, S. Dolinar, M. Lavery, M. Padgett, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (Optical Society of America, 2013), paper OTh4G.5.

H. Huang, Y. Yue, Y. Yan, N. Ahmed, Y. Ren, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper OTh4G.4.

Y. Yue, N. Ahmed, H. Huang, Y. Yan, Y. Ren, D. Rogawski, and A. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper OM2G.1.

Isaac, R.

M. D. Feuer, L. Nelson, K. S. Abedin, X. Zhou, T. F. Taunay, J. F. Fini, B. Zhu, R. Isaac, R. Harel, G. Cohen, and D. M. Marom, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper PDP5B.8.

Kristensen, P.

N. Bozinovic, Y. Yue, Y. Ren, M. Tur, P. Kristensen, H. Huang, A. Willner, and S. Ramachandran, Science 340, 1545 (2013).
[CrossRef]

Landolt, O.

Lavery, M.

H. Huang, G. Xie, Y. Yan, N. Ahmed, Y. Ren, Y. Yue, D. Rogawski, M. Tur, B. Erkmen, K. Birnbaum, S. Dolinar, M. Lavery, M. Padgett, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (Optical Society of America, 2013), paper OTh4G.5.

Li, A.

Marom, D. M.

M. D. Feuer, L. Nelson, K. S. Abedin, X. Zhou, T. F. Taunay, J. F. Fini, B. Zhu, R. Isaac, R. Harel, G. Cohen, and D. M. Marom, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper PDP5B.8.

Martelli, P.

P. Boffi, P. Martelli, A. Gatto, and M. Martinelli, J. Opt. 15, 075403 (2013).
[CrossRef]

Martinelli, M.

P. Boffi, P. Martelli, A. Gatto, and M. Martinelli, J. Opt. 15, 075403 (2013).
[CrossRef]

Miller, D. A. B.

Nelson, L.

M. D. Feuer, L. Nelson, K. S. Abedin, X. Zhou, T. F. Taunay, J. F. Fini, B. Zhu, R. Isaac, R. Harel, G. Cohen, and D. M. Marom, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper PDP5B.8.

Nelson, L. E.

D. J. Richardson, J. M. Fini, and L. E. Nelson, Nat. Photonics 7, 354 (2013).
[CrossRef]

Nishimura, K.

Padgett, M.

G. Gibson, J. Courtial, M. Padgett, M. Vasnetsov, V. Pas’ko, S. Barnett, and S. Franke-Arnold, Opt. Express 12, 5448 (2004).
[CrossRef]

H. Huang, G. Xie, Y. Yan, N. Ahmed, Y. Ren, Y. Yue, D. Rogawski, M. Tur, B. Erkmen, K. Birnbaum, S. Dolinar, M. Lavery, M. Padgett, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (Optical Society of America, 2013), paper OTh4G.5.

Pas’ko, V.

Ramachandran, S.

N. Bozinovic, Y. Yue, Y. Ren, M. Tur, P. Kristensen, H. Huang, A. Willner, and S. Ramachandran, Science 340, 1545 (2013).
[CrossRef]

Ren, Y.

N. Bozinovic, Y. Yue, Y. Ren, M. Tur, P. Kristensen, H. Huang, A. Willner, and S. Ramachandran, Science 340, 1545 (2013).
[CrossRef]

J. Wang, J. Y. Yang, I. M. Fazal, N. Ahmed, Y. Yan, H. Huang, Y. Ren, Y. Yue, S. Dolinar, M. Tur, and A. E. Willner, Nat. Photonics 6, 488 (2012).
[CrossRef]

H. Huang, G. Xie, Y. Yan, N. Ahmed, Y. Ren, Y. Yue, D. Rogawski, M. Tur, B. Erkmen, K. Birnbaum, S. Dolinar, M. Lavery, M. Padgett, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (Optical Society of America, 2013), paper OTh4G.5.

Y. Yue, N. Ahmed, H. Huang, Y. Yan, Y. Ren, D. Rogawski, and A. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper OM2G.1.

H. Huang, Y. Yue, Y. Yan, N. Ahmed, Y. Ren, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper OTh4G.4.

Richardson, D. J.

D. J. Richardson, J. M. Fini, and L. E. Nelson, Nat. Photonics 7, 354 (2013).
[CrossRef]

Robrish, P.

Rogawski, D.

H. Huang, G. Xie, Y. Yan, N. Ahmed, Y. Ren, Y. Yue, D. Rogawski, M. Tur, B. Erkmen, K. Birnbaum, S. Dolinar, M. Lavery, M. Padgett, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (Optical Society of America, 2013), paper OTh4G.5.

Y. Yue, N. Ahmed, H. Huang, Y. Yan, Y. Ren, D. Rogawski, and A. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper OM2G.1.

Shapiro, J. H.

Shieh, W.

Taunay, T. F.

M. D. Feuer, L. Nelson, K. S. Abedin, X. Zhou, T. F. Taunay, J. F. Fini, B. Zhu, R. Isaac, R. Harel, G. Cohen, and D. M. Marom, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper PDP5B.8.

Toda, Y.

Y. Awaji, N. Wada, and Y. Toda, in Proceedings of the IEEE Photonics Conference (IEEE Photonics Society, 2010), paper WBB2.

Trutna, R.

Tur, M.

N. Bozinovic, Y. Yue, Y. Ren, M. Tur, P. Kristensen, H. Huang, A. Willner, and S. Ramachandran, Science 340, 1545 (2013).
[CrossRef]

J. Wang, J. Y. Yang, I. M. Fazal, N. Ahmed, Y. Yan, H. Huang, Y. Ren, Y. Yue, S. Dolinar, M. Tur, and A. E. Willner, Nat. Photonics 6, 488 (2012).
[CrossRef]

H. Huang, G. Xie, Y. Yan, N. Ahmed, Y. Ren, Y. Yue, D. Rogawski, M. Tur, B. Erkmen, K. Birnbaum, S. Dolinar, M. Lavery, M. Padgett, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (Optical Society of America, 2013), paper OTh4G.5.

Vasnetsov, M.

Wada, N.

Y. Awaji, N. Wada, and Y. Toda, in Proceedings of the IEEE Photonics Conference (IEEE Photonics Society, 2010), paper WBB2.

Wang, J.

J. Wang, J. Y. Yang, I. M. Fazal, N. Ahmed, Y. Yan, H. Huang, Y. Ren, Y. Yue, S. Dolinar, M. Tur, and A. E. Willner, Nat. Photonics 6, 488 (2012).
[CrossRef]

Willner, A.

N. Bozinovic, Y. Yue, Y. Ren, M. Tur, P. Kristensen, H. Huang, A. Willner, and S. Ramachandran, Science 340, 1545 (2013).
[CrossRef]

Y. Yue, N. Ahmed, H. Huang, Y. Yan, Y. Ren, D. Rogawski, and A. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper OM2G.1.

Willner, A. E.

J. Wang, J. Y. Yang, I. M. Fazal, N. Ahmed, Y. Yan, H. Huang, Y. Ren, Y. Yue, S. Dolinar, M. Tur, and A. E. Willner, Nat. Photonics 6, 488 (2012).
[CrossRef]

H. Huang, G. Xie, Y. Yan, N. Ahmed, Y. Ren, Y. Yue, D. Rogawski, M. Tur, B. Erkmen, K. Birnbaum, S. Dolinar, M. Lavery, M. Padgett, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (Optical Society of America, 2013), paper OTh4G.5.

H. Huang, Y. Yue, Y. Yan, N. Ahmed, Y. Ren, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper OTh4G.4.

Xie, G.

H. Huang, G. Xie, Y. Yan, N. Ahmed, Y. Ren, Y. Yue, D. Rogawski, M. Tur, B. Erkmen, K. Birnbaum, S. Dolinar, M. Lavery, M. Padgett, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (Optical Society of America, 2013), paper OTh4G.5.

Yan, Y.

J. Wang, J. Y. Yang, I. M. Fazal, N. Ahmed, Y. Yan, H. Huang, Y. Ren, Y. Yue, S. Dolinar, M. Tur, and A. E. Willner, Nat. Photonics 6, 488 (2012).
[CrossRef]

H. Huang, G. Xie, Y. Yan, N. Ahmed, Y. Ren, Y. Yue, D. Rogawski, M. Tur, B. Erkmen, K. Birnbaum, S. Dolinar, M. Lavery, M. Padgett, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (Optical Society of America, 2013), paper OTh4G.5.

Y. Yue, N. Ahmed, H. Huang, Y. Yan, Y. Ren, D. Rogawski, and A. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper OM2G.1.

H. Huang, Y. Yue, Y. Yan, N. Ahmed, Y. Ren, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper OTh4G.4.

Yang, J. Y.

J. Wang, J. Y. Yang, I. M. Fazal, N. Ahmed, Y. Yan, H. Huang, Y. Ren, Y. Yue, S. Dolinar, M. Tur, and A. E. Willner, Nat. Photonics 6, 488 (2012).
[CrossRef]

Ye, J.

Yue, Y.

N. Bozinovic, Y. Yue, Y. Ren, M. Tur, P. Kristensen, H. Huang, A. Willner, and S. Ramachandran, Science 340, 1545 (2013).
[CrossRef]

J. Wang, J. Y. Yang, I. M. Fazal, N. Ahmed, Y. Yan, H. Huang, Y. Ren, Y. Yue, S. Dolinar, M. Tur, and A. E. Willner, Nat. Photonics 6, 488 (2012).
[CrossRef]

H. Huang, G. Xie, Y. Yan, N. Ahmed, Y. Ren, Y. Yue, D. Rogawski, M. Tur, B. Erkmen, K. Birnbaum, S. Dolinar, M. Lavery, M. Padgett, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (Optical Society of America, 2013), paper OTh4G.5.

H. Huang, Y. Yue, Y. Yan, N. Ahmed, Y. Ren, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper OTh4G.4.

Y. Yue, N. Ahmed, H. Huang, Y. Yan, Y. Ren, D. Rogawski, and A. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper OM2G.1.

Zhou, X.

M. D. Feuer, L. Nelson, K. S. Abedin, X. Zhou, T. F. Taunay, J. F. Fini, B. Zhu, R. Isaac, R. Harel, G. Cohen, and D. M. Marom, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper PDP5B.8.

Zhu, B.

M. D. Feuer, L. Nelson, K. S. Abedin, X. Zhou, T. F. Taunay, J. F. Fini, B. Zhu, R. Isaac, R. Harel, G. Cohen, and D. M. Marom, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (online) (Optical Society of America, 2013), paper PDP5B.8.

IEEE Commun. Mag. (1)

J. Homa and K. Bala, IEEE Commun. Mag. 46, 150 (2008).
[CrossRef]

J. Lightwave Technol. (2)

J. Opt. (1)

P. Boffi, P. Martelli, A. Gatto, and M. Martinelli, J. Opt. 15, 075403 (2013).
[CrossRef]

J. Opt. Netw. (1)

Nat. Photonics (2)

J. Wang, J. Y. Yang, I. M. Fazal, N. Ahmed, Y. Yan, H. Huang, Y. Ren, Y. Yue, S. Dolinar, M. Tur, and A. E. Willner, Nat. Photonics 6, 488 (2012).
[CrossRef]

D. J. Richardson, J. M. Fini, and L. E. Nelson, Nat. Photonics 7, 354 (2013).
[CrossRef]

Opt. Express (2)

Science (1)

N. Bozinovic, Y. Yue, Y. Ren, M. Tur, P. Kristensen, H. Huang, A. Willner, and S. Ramachandran, Science 340, 1545 (2013).
[CrossRef]

Other (7)

H. Huang, G. Xie, Y. Yan, N. Ahmed, Y. Ren, Y. Yue, D. Rogawski, M. Tur, B. Erkmen, K. Birnbaum, S. Dolinar, M. Lavery, M. Padgett, and A. E. Willner, in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (Optical Society of America, 2013), paper OTh4G.5.

Y. Awaji, N. Wada, and Y. Toda, in Proceedings of the IEEE Photonics Conference (IEEE Photonics Society, 2010), paper WBB2.

S. Frisken, in Optical Fiber Communication Conference and Exposition and The National Fiber Optic Engineers Conference, OSA Technical Digest (CD) (Optical Society of America, 2007), paper OWV4.

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Figures (6)

Fig. 1.
Fig. 1.

Concept of add/drop multiplexer for an OAM-multiplexed system.

Fig. 2.
Fig. 2.

(a) Concept of OAM channel add/drop multiplexing. The add/drop operation includes three steps: downconversion, add/drop, and upconversion. (b) Concept of OAM downconversion. (c) Concept of OAM upconversion.

Fig. 3.
Fig. 3.

(a) Principle of add/drop operation and the design of the phase hologram grating. (b) Incident angle of the added beam as a function of the incident angle of the pass-through beams (or the dropped beam).

Fig. 4.
Fig. 4.

Experimental setup of OAM mode add/drop multiplexing. (ECL, external cavity laser; PC, polarization controller; EDFA, erbium-doped fiber amplifier; OC, optical coupler; SLM, spatial light modulator; Pol, polarizer; Col, collimator; BS, beam splitter; HWP, half-wave plate; BPF, bandpass filter.) Insets: phase holograms applied on SLM4, SLM5 (bottom left), and SLM 6 (top right) for the different add/drop operations. (In each operation, one of the three is applied on SLM4, and the corresponding one is applied on SLM6.)

Fig. 5.
Fig. 5.

Experimental results: (a1)–(a4) images of the generated three OAM beams and their multiplexed intensity profile. (b1)–(b5) Images in each step of adding/dropping the channel on OAM+2. (c1), (c2) BER curves for (c1) added/dropped channels and (c2) pass-through channels. (d1)–(d3) Recovered constellations of the added and dropped channels.

Fig. 6.
Fig. 6.

(a) Experimental results for adding/dropping OAM5. (a1)–(a4) Images recorded by a camera. (a5) BER curves for each channel. (b) Experimental results for adding/dropping OAM+8. (b1)–(b4) Images. (b5) BER curves.

Equations (3)

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φ(x)={mod(2πxΔd,2π),r>r10,r1r>r2mod(2πxΔd,2π),rr2,
For light path(1,1)(sinα1sinβ1)d=λFor light path(2,2)(sinα2sinβ2)d=λFor light path(3,3)(sinα3sinβ3)d=λ,
α3=arcsin(sinα12λ/d).

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