Abstract

We present a feasible distance-adaptive optical transmission system that selects the optimum modulation format by referencing the estimated optical signal to noise ratio (OSNR) information transmitted from an opposing transceiver via a feedback channel. A modulation format free time-domain-multiplexed pilot sequence enables OSNR estimation and feedback channel transmission. Thanks to a feedback channel transmission, this system does not need to pass through a control plane in optimizing scheme. Using this system, we demonstrated 106.6 Gb/s QPSK and 213.3 Gb/s 16 QAM distance-adaptive optical transmission in a fully automatic manner in a field-installed fiber of 70.4 to 211.2 km.

© 2016 Optical Society of America

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References

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  1. M. Jinno, H. Takara, B. Kozicki, Y. Tsukishima, Y. Sone, and S. Matsuoka, “Spectrum-efficient and scalable elastic optical path network: architecture, benefits, and enabling technologies,” IEEE Commun. Mag. 47(11), 66–73 (2009).
    [Crossref]
  2. M. Jinno, T. Ohara, Y. Sone, A. Hirano, O. Ishida, and M. Tomizawa, “Elastic and adaptive optical networks: possible adoption scenarios and future standardization aspects,” IEEE Commun. Mag. 49(10), 164–172 (2011).
    [Crossref]
  3. K. Christodoulopoulos, I. Tomkos, and E. A. Varvarigos, “Elastic bandwidth allocation in flexible OFDM-based optical networks,” J. Lightwave Technol. 29(9), 1354–1366 (2011).
    [Crossref]
  4. B. Kozicki, H. Takara, Y. Sone, A. Watanabe, and M. Jinno, “Distance-adaptive spectrum allocation in elastic optical path network (SLICE) with bit per symbol adjustment,” in Proceedings of OFC/NFOEC2010 (2010), paper OMU3.
    [Crossref]
  5. X. Chen, Y. Zhong, and A. Jukan, “Multipath routing in elastic optical networks with distance-adaptive modulation formats,” in Proceedings of IEEE Int. Conf. Commun. (2013), pp. 3915–3920.
    [Crossref]
  6. T. Takagi, H. Hasegawa, K. Sato, T. Tanaka, B. Kozicki, Y. Sone, and M. Jinno, “Algorithms for maximizing spectrum efficiency in elastic optical path networks that adopt distance adaptive modulation,” in Proceedings of ECOC2010 (2010), paper We.8.D.5.
    [Crossref]
  7. D. J. Geisler, R. Proietti, Y. Yin, R. P. Scott, X. Cai, N. K. Fontaine, L. Paraschis, O. Gerstel, and S. J. B. Yoo, “The first testbed demonstration of a flexible bandwidth network with a real-time adaptive control plane,” in Proceedings of ECOC2011 (2011), paper Th.13.K.2.
    [Crossref]
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    [Crossref] [PubMed]
  9. S. Okamoto, K. Yonenaga, F. Hamaoka, and Y. Kisaka, “Field experiment of OSNR-aware adaptive optical transmission with pilot-aided bidirectional feedback channel,” in Proceedings of OFC2016, (2016), paper Th2A.2.
    [Crossref]
  10. S. Okamoto, Y. Kisaka, K. Ishihara, E. Yamazaki, and M. Tomizawa, “Digital In-band OSNR Estimation for Polarization-Multiplexed Optical Transmission,” in Proceedings of OECC2013 (2013), paper TuR2–4.
  11. S. Okamoto, M. Yoshida, K. Yonenaga, and T. Kataoka, “Adaptive pre-equalization using bidirectional pilot sequences to estimate and feed back amplitude transfer function and chromatic dispersion,” in Proceedings of OFC2015 (2015), paper Th2A.29.
    [Crossref]
  12. D. Chang, F. Yu, Z. Xiao, N. Stojanovic, F. N. Hauske, Y. Cai, C. Xie, L. Li, X. Xu, and Q. Xiong, “LDPC convolutional codes using layered decoding algorithm for high speed coherent optical transmission,” in Proceedings of OFC/NFOEC2012 (2012), paper OW1H.4.
    [Crossref]
  13. L. Dou, Z. Tao, Y. Zhao, S. Oda, Y. Aoki, T. Hoshida, and J. C. Rasmussen, “Differential pilot aided in-band OSNR monitor with large nonlinear tolerance,” in Proceedings of OFC2015 (2015), paper W4D.3.
    [Crossref]

2012 (1)

2011 (2)

M. Jinno, T. Ohara, Y. Sone, A. Hirano, O. Ishida, and M. Tomizawa, “Elastic and adaptive optical networks: possible adoption scenarios and future standardization aspects,” IEEE Commun. Mag. 49(10), 164–172 (2011).
[Crossref]

K. Christodoulopoulos, I. Tomkos, and E. A. Varvarigos, “Elastic bandwidth allocation in flexible OFDM-based optical networks,” J. Lightwave Technol. 29(9), 1354–1366 (2011).
[Crossref]

2009 (1)

M. Jinno, H. Takara, B. Kozicki, Y. Tsukishima, Y. Sone, and S. Matsuoka, “Spectrum-efficient and scalable elastic optical path network: architecture, benefits, and enabling technologies,” IEEE Commun. Mag. 47(11), 66–73 (2009).
[Crossref]

Aoki, Y.

L. Dou, Z. Tao, Y. Zhao, S. Oda, Y. Aoki, T. Hoshida, and J. C. Rasmussen, “Differential pilot aided in-band OSNR monitor with large nonlinear tolerance,” in Proceedings of OFC2015 (2015), paper W4D.3.
[Crossref]

Cai, X.

D. J. Geisler, R. Proietti, Y. Yin, R. P. Scott, X. Cai, N. K. Fontaine, L. Paraschis, O. Gerstel, and S. J. B. Yoo, “The first testbed demonstration of a flexible bandwidth network with a real-time adaptive control plane,” in Proceedings of ECOC2011 (2011), paper Th.13.K.2.
[Crossref]

Cai, Y.

D. Chang, F. Yu, Z. Xiao, N. Stojanovic, F. N. Hauske, Y. Cai, C. Xie, L. Li, X. Xu, and Q. Xiong, “LDPC convolutional codes using layered decoding algorithm for high speed coherent optical transmission,” in Proceedings of OFC/NFOEC2012 (2012), paper OW1H.4.
[Crossref]

Chang, D.

D. Chang, F. Yu, Z. Xiao, N. Stojanovic, F. N. Hauske, Y. Cai, C. Xie, L. Li, X. Xu, and Q. Xiong, “LDPC convolutional codes using layered decoding algorithm for high speed coherent optical transmission,” in Proceedings of OFC/NFOEC2012 (2012), paper OW1H.4.
[Crossref]

Chen, X.

X. Chen, Y. Zhong, and A. Jukan, “Multipath routing in elastic optical networks with distance-adaptive modulation formats,” in Proceedings of IEEE Int. Conf. Commun. (2013), pp. 3915–3920.
[Crossref]

Choi, H. Y.

Christodoulopoulos, K.

Dou, L.

L. Dou, Z. Tao, Y. Zhao, S. Oda, Y. Aoki, T. Hoshida, and J. C. Rasmussen, “Differential pilot aided in-band OSNR monitor with large nonlinear tolerance,” in Proceedings of OFC2015 (2015), paper W4D.3.
[Crossref]

Fontaine, N. K.

D. J. Geisler, R. Proietti, Y. Yin, R. P. Scott, X. Cai, N. K. Fontaine, L. Paraschis, O. Gerstel, and S. J. B. Yoo, “The first testbed demonstration of a flexible bandwidth network with a real-time adaptive control plane,” in Proceedings of ECOC2011 (2011), paper Th.13.K.2.
[Crossref]

Geisler, D. J.

D. J. Geisler, R. Proietti, Y. Yin, R. P. Scott, X. Cai, N. K. Fontaine, L. Paraschis, O. Gerstel, and S. J. B. Yoo, “The first testbed demonstration of a flexible bandwidth network with a real-time adaptive control plane,” in Proceedings of ECOC2011 (2011), paper Th.13.K.2.
[Crossref]

Gerstel, O.

D. J. Geisler, R. Proietti, Y. Yin, R. P. Scott, X. Cai, N. K. Fontaine, L. Paraschis, O. Gerstel, and S. J. B. Yoo, “The first testbed demonstration of a flexible bandwidth network with a real-time adaptive control plane,” in Proceedings of ECOC2011 (2011), paper Th.13.K.2.
[Crossref]

Hasegawa, H.

T. Takagi, H. Hasegawa, K. Sato, T. Tanaka, B. Kozicki, Y. Sone, and M. Jinno, “Algorithms for maximizing spectrum efficiency in elastic optical path networks that adopt distance adaptive modulation,” in Proceedings of ECOC2010 (2010), paper We.8.D.5.
[Crossref]

Hauske, F. N.

D. Chang, F. Yu, Z. Xiao, N. Stojanovic, F. N. Hauske, Y. Cai, C. Xie, L. Li, X. Xu, and Q. Xiong, “LDPC convolutional codes using layered decoding algorithm for high speed coherent optical transmission,” in Proceedings of OFC/NFOEC2012 (2012), paper OW1H.4.
[Crossref]

Hirano, A.

M. Jinno, T. Ohara, Y. Sone, A. Hirano, O. Ishida, and M. Tomizawa, “Elastic and adaptive optical networks: possible adoption scenarios and future standardization aspects,” IEEE Commun. Mag. 49(10), 164–172 (2011).
[Crossref]

Hoshida, T.

L. Dou, Z. Tao, Y. Zhao, S. Oda, Y. Aoki, T. Hoshida, and J. C. Rasmussen, “Differential pilot aided in-band OSNR monitor with large nonlinear tolerance,” in Proceedings of OFC2015 (2015), paper W4D.3.
[Crossref]

Ishida, O.

M. Jinno, T. Ohara, Y. Sone, A. Hirano, O. Ishida, and M. Tomizawa, “Elastic and adaptive optical networks: possible adoption scenarios and future standardization aspects,” IEEE Commun. Mag. 49(10), 164–172 (2011).
[Crossref]

Ishihara, K.

S. Okamoto, Y. Kisaka, K. Ishihara, E. Yamazaki, and M. Tomizawa, “Digital In-band OSNR Estimation for Polarization-Multiplexed Optical Transmission,” in Proceedings of OECC2013 (2013), paper TuR2–4.

Jinno, M.

M. Jinno, T. Ohara, Y. Sone, A. Hirano, O. Ishida, and M. Tomizawa, “Elastic and adaptive optical networks: possible adoption scenarios and future standardization aspects,” IEEE Commun. Mag. 49(10), 164–172 (2011).
[Crossref]

M. Jinno, H. Takara, B. Kozicki, Y. Tsukishima, Y. Sone, and S. Matsuoka, “Spectrum-efficient and scalable elastic optical path network: architecture, benefits, and enabling technologies,” IEEE Commun. Mag. 47(11), 66–73 (2009).
[Crossref]

B. Kozicki, H. Takara, Y. Sone, A. Watanabe, and M. Jinno, “Distance-adaptive spectrum allocation in elastic optical path network (SLICE) with bit per symbol adjustment,” in Proceedings of OFC/NFOEC2010 (2010), paper OMU3.
[Crossref]

T. Takagi, H. Hasegawa, K. Sato, T. Tanaka, B. Kozicki, Y. Sone, and M. Jinno, “Algorithms for maximizing spectrum efficiency in elastic optical path networks that adopt distance adaptive modulation,” in Proceedings of ECOC2010 (2010), paper We.8.D.5.
[Crossref]

Jukan, A.

X. Chen, Y. Zhong, and A. Jukan, “Multipath routing in elastic optical networks with distance-adaptive modulation formats,” in Proceedings of IEEE Int. Conf. Commun. (2013), pp. 3915–3920.
[Crossref]

Kataoka, T.

S. Okamoto, M. Yoshida, K. Yonenaga, and T. Kataoka, “Adaptive pre-equalization using bidirectional pilot sequences to estimate and feed back amplitude transfer function and chromatic dispersion,” in Proceedings of OFC2015 (2015), paper Th2A.29.
[Crossref]

Kisaka, Y.

S. Okamoto, Y. Kisaka, K. Ishihara, E. Yamazaki, and M. Tomizawa, “Digital In-band OSNR Estimation for Polarization-Multiplexed Optical Transmission,” in Proceedings of OECC2013 (2013), paper TuR2–4.

Kozicki, B.

M. Jinno, H. Takara, B. Kozicki, Y. Tsukishima, Y. Sone, and S. Matsuoka, “Spectrum-efficient and scalable elastic optical path network: architecture, benefits, and enabling technologies,” IEEE Commun. Mag. 47(11), 66–73 (2009).
[Crossref]

B. Kozicki, H. Takara, Y. Sone, A. Watanabe, and M. Jinno, “Distance-adaptive spectrum allocation in elastic optical path network (SLICE) with bit per symbol adjustment,” in Proceedings of OFC/NFOEC2010 (2010), paper OMU3.
[Crossref]

T. Takagi, H. Hasegawa, K. Sato, T. Tanaka, B. Kozicki, Y. Sone, and M. Jinno, “Algorithms for maximizing spectrum efficiency in elastic optical path networks that adopt distance adaptive modulation,” in Proceedings of ECOC2010 (2010), paper We.8.D.5.
[Crossref]

Li, L.

D. Chang, F. Yu, Z. Xiao, N. Stojanovic, F. N. Hauske, Y. Cai, C. Xie, L. Li, X. Xu, and Q. Xiong, “LDPC convolutional codes using layered decoding algorithm for high speed coherent optical transmission,” in Proceedings of OFC/NFOEC2012 (2012), paper OW1H.4.
[Crossref]

Matsuoka, S.

M. Jinno, H. Takara, B. Kozicki, Y. Tsukishima, Y. Sone, and S. Matsuoka, “Spectrum-efficient and scalable elastic optical path network: architecture, benefits, and enabling technologies,” IEEE Commun. Mag. 47(11), 66–73 (2009).
[Crossref]

Morita, I.

Oda, S.

L. Dou, Z. Tao, Y. Zhao, S. Oda, Y. Aoki, T. Hoshida, and J. C. Rasmussen, “Differential pilot aided in-band OSNR monitor with large nonlinear tolerance,” in Proceedings of OFC2015 (2015), paper W4D.3.
[Crossref]

Ohara, T.

M. Jinno, T. Ohara, Y. Sone, A. Hirano, O. Ishida, and M. Tomizawa, “Elastic and adaptive optical networks: possible adoption scenarios and future standardization aspects,” IEEE Commun. Mag. 49(10), 164–172 (2011).
[Crossref]

Okamoto, S.

S. Okamoto, M. Yoshida, K. Yonenaga, and T. Kataoka, “Adaptive pre-equalization using bidirectional pilot sequences to estimate and feed back amplitude transfer function and chromatic dispersion,” in Proceedings of OFC2015 (2015), paper Th2A.29.
[Crossref]

S. Okamoto, Y. Kisaka, K. Ishihara, E. Yamazaki, and M. Tomizawa, “Digital In-band OSNR Estimation for Polarization-Multiplexed Optical Transmission,” in Proceedings of OECC2013 (2013), paper TuR2–4.

Paraschis, L.

D. J. Geisler, R. Proietti, Y. Yin, R. P. Scott, X. Cai, N. K. Fontaine, L. Paraschis, O. Gerstel, and S. J. B. Yoo, “The first testbed demonstration of a flexible bandwidth network with a real-time adaptive control plane,” in Proceedings of ECOC2011 (2011), paper Th.13.K.2.
[Crossref]

Proietti, R.

D. J. Geisler, R. Proietti, Y. Yin, R. P. Scott, X. Cai, N. K. Fontaine, L. Paraschis, O. Gerstel, and S. J. B. Yoo, “The first testbed demonstration of a flexible bandwidth network with a real-time adaptive control plane,” in Proceedings of ECOC2011 (2011), paper Th.13.K.2.
[Crossref]

Rasmussen, J. C.

L. Dou, Z. Tao, Y. Zhao, S. Oda, Y. Aoki, T. Hoshida, and J. C. Rasmussen, “Differential pilot aided in-band OSNR monitor with large nonlinear tolerance,” in Proceedings of OFC2015 (2015), paper W4D.3.
[Crossref]

Sato, K.

T. Takagi, H. Hasegawa, K. Sato, T. Tanaka, B. Kozicki, Y. Sone, and M. Jinno, “Algorithms for maximizing spectrum efficiency in elastic optical path networks that adopt distance adaptive modulation,” in Proceedings of ECOC2010 (2010), paper We.8.D.5.
[Crossref]

Scott, R. P.

D. J. Geisler, R. Proietti, Y. Yin, R. P. Scott, X. Cai, N. K. Fontaine, L. Paraschis, O. Gerstel, and S. J. B. Yoo, “The first testbed demonstration of a flexible bandwidth network with a real-time adaptive control plane,” in Proceedings of ECOC2011 (2011), paper Th.13.K.2.
[Crossref]

Sone, Y.

M. Jinno, T. Ohara, Y. Sone, A. Hirano, O. Ishida, and M. Tomizawa, “Elastic and adaptive optical networks: possible adoption scenarios and future standardization aspects,” IEEE Commun. Mag. 49(10), 164–172 (2011).
[Crossref]

M. Jinno, H. Takara, B. Kozicki, Y. Tsukishima, Y. Sone, and S. Matsuoka, “Spectrum-efficient and scalable elastic optical path network: architecture, benefits, and enabling technologies,” IEEE Commun. Mag. 47(11), 66–73 (2009).
[Crossref]

T. Takagi, H. Hasegawa, K. Sato, T. Tanaka, B. Kozicki, Y. Sone, and M. Jinno, “Algorithms for maximizing spectrum efficiency in elastic optical path networks that adopt distance adaptive modulation,” in Proceedings of ECOC2010 (2010), paper We.8.D.5.
[Crossref]

B. Kozicki, H. Takara, Y. Sone, A. Watanabe, and M. Jinno, “Distance-adaptive spectrum allocation in elastic optical path network (SLICE) with bit per symbol adjustment,” in Proceedings of OFC/NFOEC2010 (2010), paper OMU3.
[Crossref]

Stojanovic, N.

D. Chang, F. Yu, Z. Xiao, N. Stojanovic, F. N. Hauske, Y. Cai, C. Xie, L. Li, X. Xu, and Q. Xiong, “LDPC convolutional codes using layered decoding algorithm for high speed coherent optical transmission,” in Proceedings of OFC/NFOEC2012 (2012), paper OW1H.4.
[Crossref]

Takagi, T.

T. Takagi, H. Hasegawa, K. Sato, T. Tanaka, B. Kozicki, Y. Sone, and M. Jinno, “Algorithms for maximizing spectrum efficiency in elastic optical path networks that adopt distance adaptive modulation,” in Proceedings of ECOC2010 (2010), paper We.8.D.5.
[Crossref]

Takara, H.

M. Jinno, H. Takara, B. Kozicki, Y. Tsukishima, Y. Sone, and S. Matsuoka, “Spectrum-efficient and scalable elastic optical path network: architecture, benefits, and enabling technologies,” IEEE Commun. Mag. 47(11), 66–73 (2009).
[Crossref]

B. Kozicki, H. Takara, Y. Sone, A. Watanabe, and M. Jinno, “Distance-adaptive spectrum allocation in elastic optical path network (SLICE) with bit per symbol adjustment,” in Proceedings of OFC/NFOEC2010 (2010), paper OMU3.
[Crossref]

Tanaka, T.

T. Takagi, H. Hasegawa, K. Sato, T. Tanaka, B. Kozicki, Y. Sone, and M. Jinno, “Algorithms for maximizing spectrum efficiency in elastic optical path networks that adopt distance adaptive modulation,” in Proceedings of ECOC2010 (2010), paper We.8.D.5.
[Crossref]

Tao, Z.

L. Dou, Z. Tao, Y. Zhao, S. Oda, Y. Aoki, T. Hoshida, and J. C. Rasmussen, “Differential pilot aided in-band OSNR monitor with large nonlinear tolerance,” in Proceedings of OFC2015 (2015), paper W4D.3.
[Crossref]

Tomizawa, M.

M. Jinno, T. Ohara, Y. Sone, A. Hirano, O. Ishida, and M. Tomizawa, “Elastic and adaptive optical networks: possible adoption scenarios and future standardization aspects,” IEEE Commun. Mag. 49(10), 164–172 (2011).
[Crossref]

S. Okamoto, Y. Kisaka, K. Ishihara, E. Yamazaki, and M. Tomizawa, “Digital In-band OSNR Estimation for Polarization-Multiplexed Optical Transmission,” in Proceedings of OECC2013 (2013), paper TuR2–4.

Tomkos, I.

Tsukishima, Y.

M. Jinno, H. Takara, B. Kozicki, Y. Tsukishima, Y. Sone, and S. Matsuoka, “Spectrum-efficient and scalable elastic optical path network: architecture, benefits, and enabling technologies,” IEEE Commun. Mag. 47(11), 66–73 (2009).
[Crossref]

Tsuritani, T.

Varvarigos, E. A.

Watanabe, A.

B. Kozicki, H. Takara, Y. Sone, A. Watanabe, and M. Jinno, “Distance-adaptive spectrum allocation in elastic optical path network (SLICE) with bit per symbol adjustment,” in Proceedings of OFC/NFOEC2010 (2010), paper OMU3.
[Crossref]

Xiao, Z.

D. Chang, F. Yu, Z. Xiao, N. Stojanovic, F. N. Hauske, Y. Cai, C. Xie, L. Li, X. Xu, and Q. Xiong, “LDPC convolutional codes using layered decoding algorithm for high speed coherent optical transmission,” in Proceedings of OFC/NFOEC2012 (2012), paper OW1H.4.
[Crossref]

Xie, C.

D. Chang, F. Yu, Z. Xiao, N. Stojanovic, F. N. Hauske, Y. Cai, C. Xie, L. Li, X. Xu, and Q. Xiong, “LDPC convolutional codes using layered decoding algorithm for high speed coherent optical transmission,” in Proceedings of OFC/NFOEC2012 (2012), paper OW1H.4.
[Crossref]

Xiong, Q.

D. Chang, F. Yu, Z. Xiao, N. Stojanovic, F. N. Hauske, Y. Cai, C. Xie, L. Li, X. Xu, and Q. Xiong, “LDPC convolutional codes using layered decoding algorithm for high speed coherent optical transmission,” in Proceedings of OFC/NFOEC2012 (2012), paper OW1H.4.
[Crossref]

Xu, X.

D. Chang, F. Yu, Z. Xiao, N. Stojanovic, F. N. Hauske, Y. Cai, C. Xie, L. Li, X. Xu, and Q. Xiong, “LDPC convolutional codes using layered decoding algorithm for high speed coherent optical transmission,” in Proceedings of OFC/NFOEC2012 (2012), paper OW1H.4.
[Crossref]

Yamazaki, E.

S. Okamoto, Y. Kisaka, K. Ishihara, E. Yamazaki, and M. Tomizawa, “Digital In-band OSNR Estimation for Polarization-Multiplexed Optical Transmission,” in Proceedings of OECC2013 (2013), paper TuR2–4.

Yin, Y.

D. J. Geisler, R. Proietti, Y. Yin, R. P. Scott, X. Cai, N. K. Fontaine, L. Paraschis, O. Gerstel, and S. J. B. Yoo, “The first testbed demonstration of a flexible bandwidth network with a real-time adaptive control plane,” in Proceedings of ECOC2011 (2011), paper Th.13.K.2.
[Crossref]

Yonenaga, K.

S. Okamoto, M. Yoshida, K. Yonenaga, and T. Kataoka, “Adaptive pre-equalization using bidirectional pilot sequences to estimate and feed back amplitude transfer function and chromatic dispersion,” in Proceedings of OFC2015 (2015), paper Th2A.29.
[Crossref]

Yoo, S. J. B.

D. J. Geisler, R. Proietti, Y. Yin, R. P. Scott, X. Cai, N. K. Fontaine, L. Paraschis, O. Gerstel, and S. J. B. Yoo, “The first testbed demonstration of a flexible bandwidth network with a real-time adaptive control plane,” in Proceedings of ECOC2011 (2011), paper Th.13.K.2.
[Crossref]

Yoshida, M.

S. Okamoto, M. Yoshida, K. Yonenaga, and T. Kataoka, “Adaptive pre-equalization using bidirectional pilot sequences to estimate and feed back amplitude transfer function and chromatic dispersion,” in Proceedings of OFC2015 (2015), paper Th2A.29.
[Crossref]

Yu, F.

D. Chang, F. Yu, Z. Xiao, N. Stojanovic, F. N. Hauske, Y. Cai, C. Xie, L. Li, X. Xu, and Q. Xiong, “LDPC convolutional codes using layered decoding algorithm for high speed coherent optical transmission,” in Proceedings of OFC/NFOEC2012 (2012), paper OW1H.4.
[Crossref]

Zhao, Y.

L. Dou, Z. Tao, Y. Zhao, S. Oda, Y. Aoki, T. Hoshida, and J. C. Rasmussen, “Differential pilot aided in-band OSNR monitor with large nonlinear tolerance,” in Proceedings of OFC2015 (2015), paper W4D.3.
[Crossref]

Zhong, Y.

X. Chen, Y. Zhong, and A. Jukan, “Multipath routing in elastic optical networks with distance-adaptive modulation formats,” in Proceedings of IEEE Int. Conf. Commun. (2013), pp. 3915–3920.
[Crossref]

IEEE Commun. Mag. (2)

M. Jinno, H. Takara, B. Kozicki, Y. Tsukishima, Y. Sone, and S. Matsuoka, “Spectrum-efficient and scalable elastic optical path network: architecture, benefits, and enabling technologies,” IEEE Commun. Mag. 47(11), 66–73 (2009).
[Crossref]

M. Jinno, T. Ohara, Y. Sone, A. Hirano, O. Ishida, and M. Tomizawa, “Elastic and adaptive optical networks: possible adoption scenarios and future standardization aspects,” IEEE Commun. Mag. 49(10), 164–172 (2011).
[Crossref]

J. Lightwave Technol. (1)

Opt. Express (1)

Other (9)

S. Okamoto, K. Yonenaga, F. Hamaoka, and Y. Kisaka, “Field experiment of OSNR-aware adaptive optical transmission with pilot-aided bidirectional feedback channel,” in Proceedings of OFC2016, (2016), paper Th2A.2.
[Crossref]

S. Okamoto, Y. Kisaka, K. Ishihara, E. Yamazaki, and M. Tomizawa, “Digital In-band OSNR Estimation for Polarization-Multiplexed Optical Transmission,” in Proceedings of OECC2013 (2013), paper TuR2–4.

S. Okamoto, M. Yoshida, K. Yonenaga, and T. Kataoka, “Adaptive pre-equalization using bidirectional pilot sequences to estimate and feed back amplitude transfer function and chromatic dispersion,” in Proceedings of OFC2015 (2015), paper Th2A.29.
[Crossref]

D. Chang, F. Yu, Z. Xiao, N. Stojanovic, F. N. Hauske, Y. Cai, C. Xie, L. Li, X. Xu, and Q. Xiong, “LDPC convolutional codes using layered decoding algorithm for high speed coherent optical transmission,” in Proceedings of OFC/NFOEC2012 (2012), paper OW1H.4.
[Crossref]

L. Dou, Z. Tao, Y. Zhao, S. Oda, Y. Aoki, T. Hoshida, and J. C. Rasmussen, “Differential pilot aided in-band OSNR monitor with large nonlinear tolerance,” in Proceedings of OFC2015 (2015), paper W4D.3.
[Crossref]

B. Kozicki, H. Takara, Y. Sone, A. Watanabe, and M. Jinno, “Distance-adaptive spectrum allocation in elastic optical path network (SLICE) with bit per symbol adjustment,” in Proceedings of OFC/NFOEC2010 (2010), paper OMU3.
[Crossref]

X. Chen, Y. Zhong, and A. Jukan, “Multipath routing in elastic optical networks with distance-adaptive modulation formats,” in Proceedings of IEEE Int. Conf. Commun. (2013), pp. 3915–3920.
[Crossref]

T. Takagi, H. Hasegawa, K. Sato, T. Tanaka, B. Kozicki, Y. Sone, and M. Jinno, “Algorithms for maximizing spectrum efficiency in elastic optical path networks that adopt distance adaptive modulation,” in Proceedings of ECOC2010 (2010), paper We.8.D.5.
[Crossref]

D. J. Geisler, R. Proietti, Y. Yin, R. P. Scott, X. Cai, N. K. Fontaine, L. Paraschis, O. Gerstel, and S. J. B. Yoo, “The first testbed demonstration of a flexible bandwidth network with a real-time adaptive control plane,” in Proceedings of ECOC2011 (2011), paper Th.13.K.2.
[Crossref]

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Figures (10)

Fig. 1
Fig. 1 System configuration and signal form optimization process.
Fig. 2
Fig. 2 Pilot sequence and its spectrum for in-band OSNR estimation. (a) Frame structure, (b) spectra of pilot sequence and (c) data sequence.
Fig. 3
Fig. 3 Time dependence (a) of the signal spectrum and (b) the power after band pass filtering.
Fig. 4
Fig. 4 Pilot sequence and combined polarization statement for feedback channel modulation. (a) Combination of X and Y pilot sequences, (b) parallel polarization state and (c) orthogonal polarization state.
Fig. 5
Fig. 5 Experimental setup
Fig. 6
Fig. 6 The equivalent OSNR (e-OSNR), which contains optical and electrical noise within 0.1 nm bandwidth, as a function of OSNR measured by OSA.
Fig. 7
Fig. 7 Q factors of QPSK and 16 QAM as a function of OSNR and e-OSNR. Those of e-OSNR are obtained by shifting the horizontal axis of those of OSNR referencing the relation of Fig. 6. The e-OSNR threshold is a criterion where Q factor of 16 QAM exceeds the FEC threshold.
Fig. 8
Fig. 8 Demodulation output of feedback channel. (a) Orthogonal polarization state and (b) parallel polarization state.
Fig. 9
Fig. 9 (a) The e-OSNR, (b) Feedback channel output, and (c) Q factor as a function of measurement sample. The OSNR was degraded when the 22nd sample was measured.
Fig. 10
Fig. 10 Q factor and e-OSNR as a function of transmission span.

Equations (3)

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R(n1)R(n)= x (n1) x n * + y (n1) y n * = x (n1) x (n1) * + y (n1) y (n1) * = | x (n1) | 2 + | x (n1) | 2 =2 | x (n1) | 2
R(n1)R(n)= x (n1) x n * + y (n1) y n * = x (n1) x (n1) * + y (n1) ( y (n1) * ) = | x (n1) | 2 | x (n1) | 2 =0
π 2 × 32× 10 9 32768 × 1 2π 244× 10 3 [Hz]

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