Abstract

We demonstrate a seamless spectral defragmentation in an elastic all-optical add–drop node based on wavelength division multiplexing (WDM) channels of Nyquist optical time division multiplexing (OTDM) signal. A 172 Gbaud Nyquist OTDM signal occupying a 215 GHz range is elastically shifted adjacent to its neighboring channel, completely filling a variable spectral gap caused by the dropped channel. The frequency shift is done in a dual-stage polarization-diversity four wave mixing-based converter using polarization-maintaining highly nonlinear fiber. The spectrally defragmented signals are successfully transmitted over a 80 km fiber link with BER<109.

© 2013 Optical Society of America

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    [CrossRef]
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    [CrossRef]
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2013 (1)

2012 (2)

O. Gerstel, M. Jinno, A. Lord, and S. J. B. Yoo, IEEE Commun. Mag. 50, S12–S20 (2012).
[CrossRef]

M. Nakazawa, T. Hirooka, P. Ruan, and P. Guan, Opt. Express 20, 1129 (2012).
[CrossRef]

2011 (4)

S. Petit, T. Kurosu, M. Takahashi, T. Yagi, and S. Namiki, IEEE Photon. Technol. Lett. 23, 546 (2011).
[CrossRef]

G. Bosco, V. Curri, A. Carena, P. Poggiolini, and F. Forghieri, J. Lightwave Technol. 29, 53 (2011).
[CrossRef]

A. E. Willner, O. F. Yilmaz, J. Wang, X. Wu, A. Bogoni, L. Zhang, and S. R. Nuccio, IEEE J. Sel. Top. Quantum Electron. 17, 320 (2011).
[CrossRef]

S. Namiki, T. Kurosu, K. Tanizawa, J. Kurumida, T. Hasama, H. Ishikawa, T. Nakatogawa, M. Nakamura, and K. Oyamada, IEEE J. Sel. Top. Quantum Electron. 17, 446 (2011).
[CrossRef]

2010 (1)

2008 (1)

T. Inoue and S. Namiki, Laser Photon. Rev. 2, 83 (2008).

1993 (1)

T. Hasegawa, K. Inoue, and K. Oda, IEEE Photon. Technol. Lett. 5, 947 (1993).
[CrossRef]

Abakoumov, D.

G. Baxter, S. Frisken, D. Abakoumov, H. Zhou, I. Clarke, A. Bartos, and S. Poole, in Proceedings of Optics Fiber Communications/National Fiber Optic Engineering Conference (OFC/NFOEC) (2006), paper OTuF2.

Amaya, N.

M. I. Anis, N. Amaya, G. Gervas, S. Pinna, M. Scaffardi, F. Fresi, A. Bogini, R. Nejabati, and D. Simeonidou, in Proceedings of Optics Fiber Communications/National Fiber Optic Engineering Conference (OFC/NFOEC) (2013), paper OW3A.3.

Andersen, J. D.

H. Hu, D. Kong, E. Palushani, J. D. Andersen, A. Rasmussen, B. M. Sorensen, M. Galili, H. C. H. Mulvad, K. J. Larsen, S. Forchhammer, P. Jeppesen, and L. K. Oxenlowe, in Proceedings of Conference on Lasers and Electro-Optics (CLEO) (2013), paper CTh5D.5.

Anis, M. I.

M. I. Anis, N. Amaya, G. Gervas, S. Pinna, M. Scaffardi, F. Fresi, A. Bogini, R. Nejabati, and D. Simeonidou, in Proceedings of Optics Fiber Communications/National Fiber Optic Engineering Conference (OFC/NFOEC) (2013), paper OW3A.3.

Bartos, A.

G. Baxter, S. Frisken, D. Abakoumov, H. Zhou, I. Clarke, A. Bartos, and S. Poole, in Proceedings of Optics Fiber Communications/National Fiber Optic Engineering Conference (OFC/NFOEC) (2006), paper OTuF2.

Baxter, G.

G. Baxter, S. Frisken, D. Abakoumov, H. Zhou, I. Clarke, A. Bartos, and S. Poole, in Proceedings of Optics Fiber Communications/National Fiber Optic Engineering Conference (OFC/NFOEC) (2006), paper OTuF2.

Bogini, A.

M. I. Anis, N. Amaya, G. Gervas, S. Pinna, M. Scaffardi, F. Fresi, A. Bogini, R. Nejabati, and D. Simeonidou, in Proceedings of Optics Fiber Communications/National Fiber Optic Engineering Conference (OFC/NFOEC) (2013), paper OW3A.3.

Bogoni, A.

A. E. Willner, O. F. Yilmaz, J. Wang, X. Wu, A. Bogoni, L. Zhang, and S. R. Nuccio, IEEE J. Sel. Top. Quantum Electron. 17, 320 (2011).
[CrossRef]

Bosco, G.

Carena, A.

Clarke, I.

G. Baxter, S. Frisken, D. Abakoumov, H. Zhou, I. Clarke, A. Bartos, and S. Poole, in Proceedings of Optics Fiber Communications/National Fiber Optic Engineering Conference (OFC/NFOEC) (2006), paper OTuF2.

Clausen, A.

Curri, V.

Forchhammer, S.

H. Hu, D. Kong, E. Palushani, J. D. Andersen, A. Rasmussen, B. M. Sorensen, M. Galili, H. C. H. Mulvad, K. J. Larsen, S. Forchhammer, P. Jeppesen, and L. K. Oxenlowe, in Proceedings of Conference on Lasers and Electro-Optics (CLEO) (2013), paper CTh5D.5.

Forghieri, F.

Fresi, F.

M. I. Anis, N. Amaya, G. Gervas, S. Pinna, M. Scaffardi, F. Fresi, A. Bogini, R. Nejabati, and D. Simeonidou, in Proceedings of Optics Fiber Communications/National Fiber Optic Engineering Conference (OFC/NFOEC) (2013), paper OW3A.3.

Frisken, S.

G. Baxter, S. Frisken, D. Abakoumov, H. Zhou, I. Clarke, A. Bartos, and S. Poole, in Proceedings of Optics Fiber Communications/National Fiber Optic Engineering Conference (OFC/NFOEC) (2006), paper OTuF2.

Galili, M.

H. Hu, E. Palushani, M. Galili, H. C. H. Mulvad, A. Clausen, L. K. Oxenlowe, and P. Jeppesen, Opt. Express 18, 9961 (2010).
[CrossRef]

H. Hu, D. Kong, E. Palushani, J. D. Andersen, A. Rasmussen, B. M. Sorensen, M. Galili, H. C. H. Mulvad, K. J. Larsen, S. Forchhammer, P. Jeppesen, and L. K. Oxenlowe, in Proceedings of Conference on Lasers and Electro-Optics (CLEO) (2013), paper CTh5D.5.

Gerstel, O.

O. Gerstel, M. Jinno, A. Lord, and S. J. B. Yoo, IEEE Commun. Mag. 50, S12–S20 (2012).
[CrossRef]

Gervas, G.

M. I. Anis, N. Amaya, G. Gervas, S. Pinna, M. Scaffardi, F. Fresi, A. Bogini, R. Nejabati, and D. Simeonidou, in Proceedings of Optics Fiber Communications/National Fiber Optic Engineering Conference (OFC/NFOEC) (2013), paper OW3A.3.

Guan, P.

Harako, K.

K. Harako, P. Ruan, T. Hirooka, and M. Nakazawa, in Proceedings of Optical Fiber Communications/National. Fiber Optic Engineering. Conference (OFC/NFOEC) (2013), paper JW2A.38.

Hasama, T.

S. Namiki, T. Kurosu, K. Tanizawa, J. Kurumida, T. Hasama, H. Ishikawa, T. Nakatogawa, M. Nakamura, and K. Oyamada, IEEE J. Sel. Top. Quantum Electron. 17, 446 (2011).
[CrossRef]

Hasegawa, T.

T. Hasegawa, K. Inoue, and K. Oda, IEEE Photon. Technol. Lett. 5, 947 (1993).
[CrossRef]

Hirooka, T.

M. Nakazawa, T. Hirooka, P. Ruan, and P. Guan, Opt. Express 20, 1129 (2012).
[CrossRef]

K. Harako, P. Ruan, T. Hirooka, and M. Nakazawa, in Proceedings of Optical Fiber Communications/National. Fiber Optic Engineering. Conference (OFC/NFOEC) (2013), paper JW2A.38.

Hu, H.

H. Hu, E. Palushani, M. Galili, H. C. H. Mulvad, A. Clausen, L. K. Oxenlowe, and P. Jeppesen, Opt. Express 18, 9961 (2010).
[CrossRef]

H. Hu, D. Kong, E. Palushani, J. D. Andersen, A. Rasmussen, B. M. Sorensen, M. Galili, H. C. H. Mulvad, K. J. Larsen, S. Forchhammer, P. Jeppesen, and L. K. Oxenlowe, in Proceedings of Conference on Lasers and Electro-Optics (CLEO) (2013), paper CTh5D.5.

Inoue, K.

T. Hasegawa, K. Inoue, and K. Oda, IEEE Photon. Technol. Lett. 5, 947 (1993).
[CrossRef]

Inoue, T.

T. Inoue and S. Namiki, Laser Photon. Rev. 2, 83 (2008).

T. Inoue, K. Tanizawa, and S. Namiki, in Proceedings of OptoElectronics and Communications Conference/Photonics in Switching (OECC/PS) (2013), paper TuS2-2.

H. N. Tan, T. Inoue, T. Kurosu, and S. Namiki, in Proceedings of OptoElectronics and Communications Conference/Photonics in Switching (OECC/PS) (2013), paper PD3-2.

H. N. Tan, T. Inoue, and S. Namiki, in Proceedings of Optics Fiber Communications/National Fiber Optic Engineering Conference (OFC/NFOEC) (2013), paper JW2A.50.

Ishikawa, H.

S. Namiki, T. Kurosu, K. Tanizawa, J. Kurumida, T. Hasama, H. Ishikawa, T. Nakatogawa, M. Nakamura, and K. Oyamada, IEEE J. Sel. Top. Quantum Electron. 17, 446 (2011).
[CrossRef]

Jeppesen, P.

H. Hu, E. Palushani, M. Galili, H. C. H. Mulvad, A. Clausen, L. K. Oxenlowe, and P. Jeppesen, Opt. Express 18, 9961 (2010).
[CrossRef]

H. Hu, D. Kong, E. Palushani, J. D. Andersen, A. Rasmussen, B. M. Sorensen, M. Galili, H. C. H. Mulvad, K. J. Larsen, S. Forchhammer, P. Jeppesen, and L. K. Oxenlowe, in Proceedings of Conference on Lasers and Electro-Optics (CLEO) (2013), paper CTh5D.5.

Jinno, M.

O. Gerstel, M. Jinno, A. Lord, and S. J. B. Yoo, IEEE Commun. Mag. 50, S12–S20 (2012).
[CrossRef]

Kong, D.

H. Hu, D. Kong, E. Palushani, J. D. Andersen, A. Rasmussen, B. M. Sorensen, M. Galili, H. C. H. Mulvad, K. J. Larsen, S. Forchhammer, P. Jeppesen, and L. K. Oxenlowe, in Proceedings of Conference on Lasers and Electro-Optics (CLEO) (2013), paper CTh5D.5.

Kurosu, T.

T. Kurosu, K. Tanizawa, D. Wang, S. Y. Set, and S. Namiki, Opt. Express 21, 4447 (2013).
[CrossRef]

S. Namiki, T. Kurosu, K. Tanizawa, J. Kurumida, T. Hasama, H. Ishikawa, T. Nakatogawa, M. Nakamura, and K. Oyamada, IEEE J. Sel. Top. Quantum Electron. 17, 446 (2011).
[CrossRef]

S. Petit, T. Kurosu, M. Takahashi, T. Yagi, and S. Namiki, IEEE Photon. Technol. Lett. 23, 546 (2011).
[CrossRef]

H. N. Tan, T. Inoue, T. Kurosu, and S. Namiki, in Proceedings of OptoElectronics and Communications Conference/Photonics in Switching (OECC/PS) (2013), paper PD3-2.

Kurumida, J.

S. Namiki, T. Kurosu, K. Tanizawa, J. Kurumida, T. Hasama, H. Ishikawa, T. Nakatogawa, M. Nakamura, and K. Oyamada, IEEE J. Sel. Top. Quantum Electron. 17, 446 (2011).
[CrossRef]

Larsen, K. J.

H. Hu, D. Kong, E. Palushani, J. D. Andersen, A. Rasmussen, B. M. Sorensen, M. Galili, H. C. H. Mulvad, K. J. Larsen, S. Forchhammer, P. Jeppesen, and L. K. Oxenlowe, in Proceedings of Conference on Lasers and Electro-Optics (CLEO) (2013), paper CTh5D.5.

Lord, A.

O. Gerstel, M. Jinno, A. Lord, and S. J. B. Yoo, IEEE Commun. Mag. 50, S12–S20 (2012).
[CrossRef]

Mulvad, H. C. H.

H. Hu, E. Palushani, M. Galili, H. C. H. Mulvad, A. Clausen, L. K. Oxenlowe, and P. Jeppesen, Opt. Express 18, 9961 (2010).
[CrossRef]

H. Hu, D. Kong, E. Palushani, J. D. Andersen, A. Rasmussen, B. M. Sorensen, M. Galili, H. C. H. Mulvad, K. J. Larsen, S. Forchhammer, P. Jeppesen, and L. K. Oxenlowe, in Proceedings of Conference on Lasers and Electro-Optics (CLEO) (2013), paper CTh5D.5.

Nakamura, M.

S. Namiki, T. Kurosu, K. Tanizawa, J. Kurumida, T. Hasama, H. Ishikawa, T. Nakatogawa, M. Nakamura, and K. Oyamada, IEEE J. Sel. Top. Quantum Electron. 17, 446 (2011).
[CrossRef]

Nakatogawa, T.

S. Namiki, T. Kurosu, K. Tanizawa, J. Kurumida, T. Hasama, H. Ishikawa, T. Nakatogawa, M. Nakamura, and K. Oyamada, IEEE J. Sel. Top. Quantum Electron. 17, 446 (2011).
[CrossRef]

Nakazawa, M.

M. Nakazawa, T. Hirooka, P. Ruan, and P. Guan, Opt. Express 20, 1129 (2012).
[CrossRef]

K. Harako, P. Ruan, T. Hirooka, and M. Nakazawa, in Proceedings of Optical Fiber Communications/National. Fiber Optic Engineering. Conference (OFC/NFOEC) (2013), paper JW2A.38.

Namiki, S.

T. Kurosu, K. Tanizawa, D. Wang, S. Y. Set, and S. Namiki, Opt. Express 21, 4447 (2013).
[CrossRef]

S. Namiki, T. Kurosu, K. Tanizawa, J. Kurumida, T. Hasama, H. Ishikawa, T. Nakatogawa, M. Nakamura, and K. Oyamada, IEEE J. Sel. Top. Quantum Electron. 17, 446 (2011).
[CrossRef]

S. Petit, T. Kurosu, M. Takahashi, T. Yagi, and S. Namiki, IEEE Photon. Technol. Lett. 23, 546 (2011).
[CrossRef]

T. Inoue and S. Namiki, Laser Photon. Rev. 2, 83 (2008).

T. Inoue, K. Tanizawa, and S. Namiki, in Proceedings of OptoElectronics and Communications Conference/Photonics in Switching (OECC/PS) (2013), paper TuS2-2.

H. N. Tan, T. Inoue, and S. Namiki, in Proceedings of Optics Fiber Communications/National Fiber Optic Engineering Conference (OFC/NFOEC) (2013), paper JW2A.50.

H. N. Tan, T. Inoue, T. Kurosu, and S. Namiki, in Proceedings of OptoElectronics and Communications Conference/Photonics in Switching (OECC/PS) (2013), paper PD3-2.

Nejabati, R.

M. I. Anis, N. Amaya, G. Gervas, S. Pinna, M. Scaffardi, F. Fresi, A. Bogini, R. Nejabati, and D. Simeonidou, in Proceedings of Optics Fiber Communications/National Fiber Optic Engineering Conference (OFC/NFOEC) (2013), paper OW3A.3.

Nuccio, S. R.

A. E. Willner, O. F. Yilmaz, J. Wang, X. Wu, A. Bogoni, L. Zhang, and S. R. Nuccio, IEEE J. Sel. Top. Quantum Electron. 17, 320 (2011).
[CrossRef]

Oda, K.

T. Hasegawa, K. Inoue, and K. Oda, IEEE Photon. Technol. Lett. 5, 947 (1993).
[CrossRef]

Oxenlowe, L. K.

H. Hu, E. Palushani, M. Galili, H. C. H. Mulvad, A. Clausen, L. K. Oxenlowe, and P. Jeppesen, Opt. Express 18, 9961 (2010).
[CrossRef]

H. Hu, D. Kong, E. Palushani, J. D. Andersen, A. Rasmussen, B. M. Sorensen, M. Galili, H. C. H. Mulvad, K. J. Larsen, S. Forchhammer, P. Jeppesen, and L. K. Oxenlowe, in Proceedings of Conference on Lasers and Electro-Optics (CLEO) (2013), paper CTh5D.5.

Oyamada, K.

S. Namiki, T. Kurosu, K. Tanizawa, J. Kurumida, T. Hasama, H. Ishikawa, T. Nakatogawa, M. Nakamura, and K. Oyamada, IEEE J. Sel. Top. Quantum Electron. 17, 446 (2011).
[CrossRef]

Palushani, E.

H. Hu, E. Palushani, M. Galili, H. C. H. Mulvad, A. Clausen, L. K. Oxenlowe, and P. Jeppesen, Opt. Express 18, 9961 (2010).
[CrossRef]

H. Hu, D. Kong, E. Palushani, J. D. Andersen, A. Rasmussen, B. M. Sorensen, M. Galili, H. C. H. Mulvad, K. J. Larsen, S. Forchhammer, P. Jeppesen, and L. K. Oxenlowe, in Proceedings of Conference on Lasers and Electro-Optics (CLEO) (2013), paper CTh5D.5.

Petit, S.

S. Petit, T. Kurosu, M. Takahashi, T. Yagi, and S. Namiki, IEEE Photon. Technol. Lett. 23, 546 (2011).
[CrossRef]

Pinna, S.

M. I. Anis, N. Amaya, G. Gervas, S. Pinna, M. Scaffardi, F. Fresi, A. Bogini, R. Nejabati, and D. Simeonidou, in Proceedings of Optics Fiber Communications/National Fiber Optic Engineering Conference (OFC/NFOEC) (2013), paper OW3A.3.

Poggiolini, P.

Poole, S.

G. Baxter, S. Frisken, D. Abakoumov, H. Zhou, I. Clarke, A. Bartos, and S. Poole, in Proceedings of Optics Fiber Communications/National Fiber Optic Engineering Conference (OFC/NFOEC) (2006), paper OTuF2.

Rasmussen, A.

H. Hu, D. Kong, E. Palushani, J. D. Andersen, A. Rasmussen, B. M. Sorensen, M. Galili, H. C. H. Mulvad, K. J. Larsen, S. Forchhammer, P. Jeppesen, and L. K. Oxenlowe, in Proceedings of Conference on Lasers and Electro-Optics (CLEO) (2013), paper CTh5D.5.

Ruan, P.

M. Nakazawa, T. Hirooka, P. Ruan, and P. Guan, Opt. Express 20, 1129 (2012).
[CrossRef]

K. Harako, P. Ruan, T. Hirooka, and M. Nakazawa, in Proceedings of Optical Fiber Communications/National. Fiber Optic Engineering. Conference (OFC/NFOEC) (2013), paper JW2A.38.

Scaffardi, M.

M. I. Anis, N. Amaya, G. Gervas, S. Pinna, M. Scaffardi, F. Fresi, A. Bogini, R. Nejabati, and D. Simeonidou, in Proceedings of Optics Fiber Communications/National Fiber Optic Engineering Conference (OFC/NFOEC) (2013), paper OW3A.3.

Set, S. Y.

Simeonidou, D.

M. I. Anis, N. Amaya, G. Gervas, S. Pinna, M. Scaffardi, F. Fresi, A. Bogini, R. Nejabati, and D. Simeonidou, in Proceedings of Optics Fiber Communications/National Fiber Optic Engineering Conference (OFC/NFOEC) (2013), paper OW3A.3.

Sorensen, B. M.

H. Hu, D. Kong, E. Palushani, J. D. Andersen, A. Rasmussen, B. M. Sorensen, M. Galili, H. C. H. Mulvad, K. J. Larsen, S. Forchhammer, P. Jeppesen, and L. K. Oxenlowe, in Proceedings of Conference on Lasers and Electro-Optics (CLEO) (2013), paper CTh5D.5.

Takahashi, M.

S. Petit, T. Kurosu, M. Takahashi, T. Yagi, and S. Namiki, IEEE Photon. Technol. Lett. 23, 546 (2011).
[CrossRef]

Tan, H. N.

H. N. Tan, T. Inoue, and S. Namiki, in Proceedings of Optics Fiber Communications/National Fiber Optic Engineering Conference (OFC/NFOEC) (2013), paper JW2A.50.

H. N. Tan, T. Inoue, T. Kurosu, and S. Namiki, in Proceedings of OptoElectronics and Communications Conference/Photonics in Switching (OECC/PS) (2013), paper PD3-2.

Tanizawa, K.

T. Kurosu, K. Tanizawa, D. Wang, S. Y. Set, and S. Namiki, Opt. Express 21, 4447 (2013).
[CrossRef]

S. Namiki, T. Kurosu, K. Tanizawa, J. Kurumida, T. Hasama, H. Ishikawa, T. Nakatogawa, M. Nakamura, and K. Oyamada, IEEE J. Sel. Top. Quantum Electron. 17, 446 (2011).
[CrossRef]

T. Inoue, K. Tanizawa, and S. Namiki, in Proceedings of OptoElectronics and Communications Conference/Photonics in Switching (OECC/PS) (2013), paper TuS2-2.

Wang, D.

Wang, J.

A. E. Willner, O. F. Yilmaz, J. Wang, X. Wu, A. Bogoni, L. Zhang, and S. R. Nuccio, IEEE J. Sel. Top. Quantum Electron. 17, 320 (2011).
[CrossRef]

Willner, A. E.

A. E. Willner, O. F. Yilmaz, J. Wang, X. Wu, A. Bogoni, L. Zhang, and S. R. Nuccio, IEEE J. Sel. Top. Quantum Electron. 17, 320 (2011).
[CrossRef]

Wu, X.

A. E. Willner, O. F. Yilmaz, J. Wang, X. Wu, A. Bogoni, L. Zhang, and S. R. Nuccio, IEEE J. Sel. Top. Quantum Electron. 17, 320 (2011).
[CrossRef]

Yagi, T.

S. Petit, T. Kurosu, M. Takahashi, T. Yagi, and S. Namiki, IEEE Photon. Technol. Lett. 23, 546 (2011).
[CrossRef]

Yilmaz, O. F.

A. E. Willner, O. F. Yilmaz, J. Wang, X. Wu, A. Bogoni, L. Zhang, and S. R. Nuccio, IEEE J. Sel. Top. Quantum Electron. 17, 320 (2011).
[CrossRef]

Yoo, S. J. B.

O. Gerstel, M. Jinno, A. Lord, and S. J. B. Yoo, IEEE Commun. Mag. 50, S12–S20 (2012).
[CrossRef]

Zhang, L.

A. E. Willner, O. F. Yilmaz, J. Wang, X. Wu, A. Bogoni, L. Zhang, and S. R. Nuccio, IEEE J. Sel. Top. Quantum Electron. 17, 320 (2011).
[CrossRef]

Zhou, H.

G. Baxter, S. Frisken, D. Abakoumov, H. Zhou, I. Clarke, A. Bartos, and S. Poole, in Proceedings of Optics Fiber Communications/National Fiber Optic Engineering Conference (OFC/NFOEC) (2006), paper OTuF2.

IEEE Commun. Mag. (1)

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Figures (8)

Fig. 1.
Fig. 1.

Experimental setup of elastic Nyquist OTDM-WDM add–drop node with seamless spectral defragmentation. Inset: wavelength translations inside the dual-stage wavelength converter.

Fig. 2.
Fig. 2.

(a) Configuration of the dual-stage wavelength converter for spectral defragmentation. (b) Schematic and picture of polarization diversity module. (c) Picture of PM-HNLF.

Fig. 3.
Fig. 3.

Optical Nyquist pulse waveform and its raised cosine function fitting. Inset: eye pattern of input 172 Gbaud Nyquist OTDM channel C.

Fig. 4.
Fig. 4.

Spectra of Nyquist OTDM-WDM channels at the node input (upper) and at the node output (lower) after spectral defragmentation with a frequency shift of (a) 43 GHz, (b) 129 GHz, and (c) 215 GHz.

Fig. 5.
Fig. 5.

Eyes of 172 Gbaud Nyquist OTDM after conversion without and with 80 km in cases of frequency shift.

Fig. 6.
Fig. 6.

43 GHz RF tone of frequency-shifted Nyquist OTDM with 80 km after optical-electric conversion. Inset is waveform of 43 GHz RF recovered clock.

Fig. 7.
Fig. 7.

BER curves of a 43 Gbaud demultiplexed signals after conversion without and with 80 km. Insets are eye patterns of 43 Gbaud demultiplexed tributaries.

Fig. 8.
Fig. 8.

Power penalties at BER of 109 of all tributaries after wavelength conversion without (circle) and with (diamond) 80 km link in three cases of frequency shift.

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