Abstract

We experimentally demonstrate a reconfigurable optical converter/encoder for quadrature amplitude modulated (QAM) signals. The system utilizes nonlinear wavelength multicasting, conversion-dispersion delays, and simultaneous nonlinear multiplexing and sampling. We show baud rate tunability (31 and 20 Gbaud) and reconfigurable conversions from lower-order QAM signals to higher-order QAM signals (e.g., 64-QAM).

© 2013 Optical Society of America

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  1. L. Yan, A. E. Willner, X. Wu, A. Yi, A. Bogoni, Z.-Y. Chen, and H.-Y. Jiang, J. Lightwave Technol. 30, 3760 (2012).
    [CrossRef]
  2. A. H. Gnauck, P. J. Winzer, A. Konczykowska, F. Jorge, J.-Y. Dupuy, M. Riet, G. Charlet, B. Zhu, and D. W. Peckham, J. Lightwave Technol. 30, 532 (2012).
    [CrossRef]
  3. J. G. Proakis, Digital Communications (McGraw-Hill, 1995), p. 511.
  4. S. Khaleghi, O. F. Yilmaz, M. R. Chitgarha, M. Tur, N. Ahmed, S. R. Nuccio, I. M. Fazal, X. Wu, M. W. Haney, C. Langrock, M. M. Fejer, and A. E. Willner, IEEE Photon. J. 4, 1220 (2012).
  5. T. Sakamoto and A. Chiba, IEEE J. Sel. Top. Quantum Electron. 16, 1140 (2010).
    [CrossRef]
  6. L. Zhang, X. Hu, Y. Wu, Q. Liu, T. Wang, and Y. Su, in 15th Asia-Pacific Conference on Communications (IEEE, 2009), 609.
  7. S. Khaleghi, M. R. Chitgarha, O. F. Yilmaz, H. Huang, M. Tur, M. W. Haney, and A. E. Willner, in Proceedings of the IEEE/OSA Conference on Optical Fiber Communications (IEEE, 2012), paper OTh4H.6.
  8. C. Langrock, S. Kumar, J. E. McGeehan, A. E. Willner, and M. M. Fejer, J. Lightwave Technol. 24, 2579 (2006).
    [CrossRef]

2012

2010

T. Sakamoto and A. Chiba, IEEE J. Sel. Top. Quantum Electron. 16, 1140 (2010).
[CrossRef]

2006

Ahmed, N.

S. Khaleghi, O. F. Yilmaz, M. R. Chitgarha, M. Tur, N. Ahmed, S. R. Nuccio, I. M. Fazal, X. Wu, M. W. Haney, C. Langrock, M. M. Fejer, and A. E. Willner, IEEE Photon. J. 4, 1220 (2012).

Bogoni, A.

Charlet, G.

Chen, Z.-Y.

Chiba, A.

T. Sakamoto and A. Chiba, IEEE J. Sel. Top. Quantum Electron. 16, 1140 (2010).
[CrossRef]

Chitgarha, M. R.

S. Khaleghi, O. F. Yilmaz, M. R. Chitgarha, M. Tur, N. Ahmed, S. R. Nuccio, I. M. Fazal, X. Wu, M. W. Haney, C. Langrock, M. M. Fejer, and A. E. Willner, IEEE Photon. J. 4, 1220 (2012).

S. Khaleghi, M. R. Chitgarha, O. F. Yilmaz, H. Huang, M. Tur, M. W. Haney, and A. E. Willner, in Proceedings of the IEEE/OSA Conference on Optical Fiber Communications (IEEE, 2012), paper OTh4H.6.

Dupuy, J.-Y.

Fazal, I. M.

S. Khaleghi, O. F. Yilmaz, M. R. Chitgarha, M. Tur, N. Ahmed, S. R. Nuccio, I. M. Fazal, X. Wu, M. W. Haney, C. Langrock, M. M. Fejer, and A. E. Willner, IEEE Photon. J. 4, 1220 (2012).

Fejer, M. M.

S. Khaleghi, O. F. Yilmaz, M. R. Chitgarha, M. Tur, N. Ahmed, S. R. Nuccio, I. M. Fazal, X. Wu, M. W. Haney, C. Langrock, M. M. Fejer, and A. E. Willner, IEEE Photon. J. 4, 1220 (2012).

C. Langrock, S. Kumar, J. E. McGeehan, A. E. Willner, and M. M. Fejer, J. Lightwave Technol. 24, 2579 (2006).
[CrossRef]

Gnauck, A. H.

Haney, M. W.

S. Khaleghi, O. F. Yilmaz, M. R. Chitgarha, M. Tur, N. Ahmed, S. R. Nuccio, I. M. Fazal, X. Wu, M. W. Haney, C. Langrock, M. M. Fejer, and A. E. Willner, IEEE Photon. J. 4, 1220 (2012).

S. Khaleghi, M. R. Chitgarha, O. F. Yilmaz, H. Huang, M. Tur, M. W. Haney, and A. E. Willner, in Proceedings of the IEEE/OSA Conference on Optical Fiber Communications (IEEE, 2012), paper OTh4H.6.

Hu, X.

L. Zhang, X. Hu, Y. Wu, Q. Liu, T. Wang, and Y. Su, in 15th Asia-Pacific Conference on Communications (IEEE, 2009), 609.

Huang, H.

S. Khaleghi, M. R. Chitgarha, O. F. Yilmaz, H. Huang, M. Tur, M. W. Haney, and A. E. Willner, in Proceedings of the IEEE/OSA Conference on Optical Fiber Communications (IEEE, 2012), paper OTh4H.6.

Jiang, H.-Y.

Jorge, F.

Khaleghi, S.

S. Khaleghi, O. F. Yilmaz, M. R. Chitgarha, M. Tur, N. Ahmed, S. R. Nuccio, I. M. Fazal, X. Wu, M. W. Haney, C. Langrock, M. M. Fejer, and A. E. Willner, IEEE Photon. J. 4, 1220 (2012).

S. Khaleghi, M. R. Chitgarha, O. F. Yilmaz, H. Huang, M. Tur, M. W. Haney, and A. E. Willner, in Proceedings of the IEEE/OSA Conference on Optical Fiber Communications (IEEE, 2012), paper OTh4H.6.

Konczykowska, A.

Kumar, S.

Langrock, C.

S. Khaleghi, O. F. Yilmaz, M. R. Chitgarha, M. Tur, N. Ahmed, S. R. Nuccio, I. M. Fazal, X. Wu, M. W. Haney, C. Langrock, M. M. Fejer, and A. E. Willner, IEEE Photon. J. 4, 1220 (2012).

C. Langrock, S. Kumar, J. E. McGeehan, A. E. Willner, and M. M. Fejer, J. Lightwave Technol. 24, 2579 (2006).
[CrossRef]

Liu, Q.

L. Zhang, X. Hu, Y. Wu, Q. Liu, T. Wang, and Y. Su, in 15th Asia-Pacific Conference on Communications (IEEE, 2009), 609.

McGeehan, J. E.

Nuccio, S. R.

S. Khaleghi, O. F. Yilmaz, M. R. Chitgarha, M. Tur, N. Ahmed, S. R. Nuccio, I. M. Fazal, X. Wu, M. W. Haney, C. Langrock, M. M. Fejer, and A. E. Willner, IEEE Photon. J. 4, 1220 (2012).

Peckham, D. W.

Proakis, J. G.

J. G. Proakis, Digital Communications (McGraw-Hill, 1995), p. 511.

Riet, M.

Sakamoto, T.

T. Sakamoto and A. Chiba, IEEE J. Sel. Top. Quantum Electron. 16, 1140 (2010).
[CrossRef]

Su, Y.

L. Zhang, X. Hu, Y. Wu, Q. Liu, T. Wang, and Y. Su, in 15th Asia-Pacific Conference on Communications (IEEE, 2009), 609.

Tur, M.

S. Khaleghi, O. F. Yilmaz, M. R. Chitgarha, M. Tur, N. Ahmed, S. R. Nuccio, I. M. Fazal, X. Wu, M. W. Haney, C. Langrock, M. M. Fejer, and A. E. Willner, IEEE Photon. J. 4, 1220 (2012).

S. Khaleghi, M. R. Chitgarha, O. F. Yilmaz, H. Huang, M. Tur, M. W. Haney, and A. E. Willner, in Proceedings of the IEEE/OSA Conference on Optical Fiber Communications (IEEE, 2012), paper OTh4H.6.

Wang, T.

L. Zhang, X. Hu, Y. Wu, Q. Liu, T. Wang, and Y. Su, in 15th Asia-Pacific Conference on Communications (IEEE, 2009), 609.

Willner, A. E.

S. Khaleghi, O. F. Yilmaz, M. R. Chitgarha, M. Tur, N. Ahmed, S. R. Nuccio, I. M. Fazal, X. Wu, M. W. Haney, C. Langrock, M. M. Fejer, and A. E. Willner, IEEE Photon. J. 4, 1220 (2012).

L. Yan, A. E. Willner, X. Wu, A. Yi, A. Bogoni, Z.-Y. Chen, and H.-Y. Jiang, J. Lightwave Technol. 30, 3760 (2012).
[CrossRef]

C. Langrock, S. Kumar, J. E. McGeehan, A. E. Willner, and M. M. Fejer, J. Lightwave Technol. 24, 2579 (2006).
[CrossRef]

S. Khaleghi, M. R. Chitgarha, O. F. Yilmaz, H. Huang, M. Tur, M. W. Haney, and A. E. Willner, in Proceedings of the IEEE/OSA Conference on Optical Fiber Communications (IEEE, 2012), paper OTh4H.6.

Winzer, P. J.

Wu, X.

L. Yan, A. E. Willner, X. Wu, A. Yi, A. Bogoni, Z.-Y. Chen, and H.-Y. Jiang, J. Lightwave Technol. 30, 3760 (2012).
[CrossRef]

S. Khaleghi, O. F. Yilmaz, M. R. Chitgarha, M. Tur, N. Ahmed, S. R. Nuccio, I. M. Fazal, X. Wu, M. W. Haney, C. Langrock, M. M. Fejer, and A. E. Willner, IEEE Photon. J. 4, 1220 (2012).

Wu, Y.

L. Zhang, X. Hu, Y. Wu, Q. Liu, T. Wang, and Y. Su, in 15th Asia-Pacific Conference on Communications (IEEE, 2009), 609.

Yan, L.

Yi, A.

Yilmaz, O. F.

S. Khaleghi, O. F. Yilmaz, M. R. Chitgarha, M. Tur, N. Ahmed, S. R. Nuccio, I. M. Fazal, X. Wu, M. W. Haney, C. Langrock, M. M. Fejer, and A. E. Willner, IEEE Photon. J. 4, 1220 (2012).

S. Khaleghi, M. R. Chitgarha, O. F. Yilmaz, H. Huang, M. Tur, M. W. Haney, and A. E. Willner, in Proceedings of the IEEE/OSA Conference on Optical Fiber Communications (IEEE, 2012), paper OTh4H.6.

Zhang, L.

L. Zhang, X. Hu, Y. Wu, Q. Liu, T. Wang, and Y. Su, in 15th Asia-Pacific Conference on Communications (IEEE, 2009), 609.

Zhu, B.

IEEE J. Sel. Top. Quantum Electron.

T. Sakamoto and A. Chiba, IEEE J. Sel. Top. Quantum Electron. 16, 1140 (2010).
[CrossRef]

IEEE Photon. J.

S. Khaleghi, O. F. Yilmaz, M. R. Chitgarha, M. Tur, N. Ahmed, S. R. Nuccio, I. M. Fazal, X. Wu, M. W. Haney, C. Langrock, M. M. Fejer, and A. E. Willner, IEEE Photon. J. 4, 1220 (2012).

J. Lightwave Technol.

Other

J. G. Proakis, Digital Communications (McGraw-Hill, 1995), p. 511.

L. Zhang, X. Hu, Y. Wu, Q. Liu, T. Wang, and Y. Su, in 15th Asia-Pacific Conference on Communications (IEEE, 2009), 609.

S. Khaleghi, M. R. Chitgarha, O. F. Yilmaz, H. Huang, M. Tur, M. W. Haney, and A. E. Willner, in Proceedings of the IEEE/OSA Conference on Optical Fiber Communications (IEEE, 2012), paper OTh4H.6.

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Figures (5)

Fig. 1.
Fig. 1.

Conceptual block diagram of an optical QAM format converter using nonlinear signal processing.

Fig. 2.
Fig. 2.

Experimental setup and schematic wave-mixing spectra. PC, polarization controller; ATT, attenuator; LO, local oscillator.

Fig. 3.
Fig. 3.

(a) Spectra of the first and the second PLLN waveguides outputs for 31 Gbaud input signal with half-rate sampling pump. (b) Output constellations. (c) Spectra for 20 Gbaud signals, and (d) output constellations.

Fig. 4.
Fig. 4.

(a) Output spectra of nonlinear stages for QPSK to 64-QAM conversion. Constellation diagrams showing different encodings for (b) 31 Gbaud and (c) 20 Gbaud signals.

Fig. 5.
Fig. 5.

BER measurements versus OSNR for experiments with (a) a sampling pump and (b) with a CW pump.

Equations (2)

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y ( t ) i = 0 Π ( t i N T s ) × i = 1 N c i x ( t ( i 1 ) T s )
A MUX ( t ) A P / Samp * ( t ) i = 1 N | A D i | 2 e j ϕ i A S ( t ( i 1 ) T s ) .

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