Abstract

We experimentally demonstrate all-optical broadcasting through simultaneous 7×40 Gb/s base-rate wavelength conversion in RZ format based on cross absorption modulation in an electroabsorption modulator. In this experiment the original intensity-modulated information is successfully duplicated onto seven wavelengths that comply with the ITU-T proposal. The advantages of the proposed wavelength conversion scheme are also discussed.

© 2004 Optical Society of America

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  1. T. H. Wood, “Multiple Quantum Well (MQW) Waveguide Modulators,” J. Lightwave Technol. 6, 743–757 (1988).
    [Crossref]
  2. T. H. Wood, J. Z. Pastalan, C. A. Burrus, B. C. Johnson, B. I. Miller, J. L. Demiguel, U. Koren, and M. G. Young, “Electric field screening by photogenerated holes in multiple quantum wells: A new mechanism for absorption saturation,” Appl. Phys. Lett. 57, 1081–1083 (1990).
    [Crossref]
  3. M. Suzuki, H. Tanaka, and S. Akiba, “Effect of hole pile-up at heterointerface on modulation voltage in GaInAsP electroabsorption modulators,” Electron. Lett. 25, no. 2, 88–89 (1989).
    [Crossref]
  4. L. K. Oxenløwe, E. Hilliger, A. Tersigni, A. M. Nik, S. Højfeldt, K. Yvind, P. M. W. Skovgaard, K. Hoppe, and J. Hanberg, “All-optical Demultiplexing and Wavelength conversion in an Electroabsorption Modulator,” Proceedings of ECOC 2001, paper Th.B.2.5 (2001).
  5. L. Xu, L.K. Oxenløwe, N. Chi, J. Mørk, P. Jeppesen, K. Hoppe, and J. Hanberg, “Experimental characterisation of wavelength conversion at 40Gb/s based on electroabsorption modulators,” IEEE Lasers and Electro-Optics Society 2002, paper MM3 (2002).
    [Crossref]
  6. N. Edagawa, M. Suzuki, and S. Yamanoto, “Novel wavelength converter using an electroabsorption modulator,” IEICE Trans. Electron. E81-C, 1251–2157 (1998).
  7. E. S. Awad, P. S. Cho, C. Richardson, N. Moulton, and J. Goldhar, “Optical 3R regeneration with all-optical timing extraction and simultaneous wavelength conversion using a single Electro-Absorption Modulator,” Proceedings of ECOC 2002, paper 6.3.2 (2002).
  8. J.J. Yu, X.Y. Zheng, F.H. Liu, C. Peucheret, A.T. Clausen, H.N. Poulsen, and P. Jeppsen, “8×40 Gb/s 55-km WDM Transmission over Conventional Fiber Using a New RZ Optical Source,” IEEE Photon. Technol. Lett. 12, 912–914 (2000).
    [Crossref]
  9. L. Xu, L.K. Oxenløwe, N. Chi, F. P. Romstad, K. Yvind, J. Mørk, P. Jeppsen, K. Hoppe, and J. Hanberg, “Bandwidth and chirp characterisation of wavelength conversion based on electroabsorption modulators,” Proceedings of ECOC 2002, paper P1.26 (2002).

2000 (1)

J.J. Yu, X.Y. Zheng, F.H. Liu, C. Peucheret, A.T. Clausen, H.N. Poulsen, and P. Jeppsen, “8×40 Gb/s 55-km WDM Transmission over Conventional Fiber Using a New RZ Optical Source,” IEEE Photon. Technol. Lett. 12, 912–914 (2000).
[Crossref]

1998 (1)

N. Edagawa, M. Suzuki, and S. Yamanoto, “Novel wavelength converter using an electroabsorption modulator,” IEICE Trans. Electron. E81-C, 1251–2157 (1998).

1990 (1)

T. H. Wood, J. Z. Pastalan, C. A. Burrus, B. C. Johnson, B. I. Miller, J. L. Demiguel, U. Koren, and M. G. Young, “Electric field screening by photogenerated holes in multiple quantum wells: A new mechanism for absorption saturation,” Appl. Phys. Lett. 57, 1081–1083 (1990).
[Crossref]

1989 (1)

M. Suzuki, H. Tanaka, and S. Akiba, “Effect of hole pile-up at heterointerface on modulation voltage in GaInAsP electroabsorption modulators,” Electron. Lett. 25, no. 2, 88–89 (1989).
[Crossref]

1988 (1)

T. H. Wood, “Multiple Quantum Well (MQW) Waveguide Modulators,” J. Lightwave Technol. 6, 743–757 (1988).
[Crossref]

Akiba, S.

M. Suzuki, H. Tanaka, and S. Akiba, “Effect of hole pile-up at heterointerface on modulation voltage in GaInAsP electroabsorption modulators,” Electron. Lett. 25, no. 2, 88–89 (1989).
[Crossref]

Awad, E. S.

E. S. Awad, P. S. Cho, C. Richardson, N. Moulton, and J. Goldhar, “Optical 3R regeneration with all-optical timing extraction and simultaneous wavelength conversion using a single Electro-Absorption Modulator,” Proceedings of ECOC 2002, paper 6.3.2 (2002).

Burrus, C. A.

T. H. Wood, J. Z. Pastalan, C. A. Burrus, B. C. Johnson, B. I. Miller, J. L. Demiguel, U. Koren, and M. G. Young, “Electric field screening by photogenerated holes in multiple quantum wells: A new mechanism for absorption saturation,” Appl. Phys. Lett. 57, 1081–1083 (1990).
[Crossref]

Chi, N.

L. Xu, L.K. Oxenløwe, N. Chi, J. Mørk, P. Jeppesen, K. Hoppe, and J. Hanberg, “Experimental characterisation of wavelength conversion at 40Gb/s based on electroabsorption modulators,” IEEE Lasers and Electro-Optics Society 2002, paper MM3 (2002).
[Crossref]

L. Xu, L.K. Oxenløwe, N. Chi, F. P. Romstad, K. Yvind, J. Mørk, P. Jeppsen, K. Hoppe, and J. Hanberg, “Bandwidth and chirp characterisation of wavelength conversion based on electroabsorption modulators,” Proceedings of ECOC 2002, paper P1.26 (2002).

Cho, P. S.

E. S. Awad, P. S. Cho, C. Richardson, N. Moulton, and J. Goldhar, “Optical 3R regeneration with all-optical timing extraction and simultaneous wavelength conversion using a single Electro-Absorption Modulator,” Proceedings of ECOC 2002, paper 6.3.2 (2002).

Clausen, A.T.

J.J. Yu, X.Y. Zheng, F.H. Liu, C. Peucheret, A.T. Clausen, H.N. Poulsen, and P. Jeppsen, “8×40 Gb/s 55-km WDM Transmission over Conventional Fiber Using a New RZ Optical Source,” IEEE Photon. Technol. Lett. 12, 912–914 (2000).
[Crossref]

Demiguel, J. L.

T. H. Wood, J. Z. Pastalan, C. A. Burrus, B. C. Johnson, B. I. Miller, J. L. Demiguel, U. Koren, and M. G. Young, “Electric field screening by photogenerated holes in multiple quantum wells: A new mechanism for absorption saturation,” Appl. Phys. Lett. 57, 1081–1083 (1990).
[Crossref]

Edagawa, N.

N. Edagawa, M. Suzuki, and S. Yamanoto, “Novel wavelength converter using an electroabsorption modulator,” IEICE Trans. Electron. E81-C, 1251–2157 (1998).

Goldhar, J.

E. S. Awad, P. S. Cho, C. Richardson, N. Moulton, and J. Goldhar, “Optical 3R regeneration with all-optical timing extraction and simultaneous wavelength conversion using a single Electro-Absorption Modulator,” Proceedings of ECOC 2002, paper 6.3.2 (2002).

Hanberg, J.

L. Xu, L.K. Oxenløwe, N. Chi, J. Mørk, P. Jeppesen, K. Hoppe, and J. Hanberg, “Experimental characterisation of wavelength conversion at 40Gb/s based on electroabsorption modulators,” IEEE Lasers and Electro-Optics Society 2002, paper MM3 (2002).
[Crossref]

L. K. Oxenløwe, E. Hilliger, A. Tersigni, A. M. Nik, S. Højfeldt, K. Yvind, P. M. W. Skovgaard, K. Hoppe, and J. Hanberg, “All-optical Demultiplexing and Wavelength conversion in an Electroabsorption Modulator,” Proceedings of ECOC 2001, paper Th.B.2.5 (2001).

L. Xu, L.K. Oxenløwe, N. Chi, F. P. Romstad, K. Yvind, J. Mørk, P. Jeppsen, K. Hoppe, and J. Hanberg, “Bandwidth and chirp characterisation of wavelength conversion based on electroabsorption modulators,” Proceedings of ECOC 2002, paper P1.26 (2002).

Hilliger, E.

L. K. Oxenløwe, E. Hilliger, A. Tersigni, A. M. Nik, S. Højfeldt, K. Yvind, P. M. W. Skovgaard, K. Hoppe, and J. Hanberg, “All-optical Demultiplexing and Wavelength conversion in an Electroabsorption Modulator,” Proceedings of ECOC 2001, paper Th.B.2.5 (2001).

Højfeldt, S.

L. K. Oxenløwe, E. Hilliger, A. Tersigni, A. M. Nik, S. Højfeldt, K. Yvind, P. M. W. Skovgaard, K. Hoppe, and J. Hanberg, “All-optical Demultiplexing and Wavelength conversion in an Electroabsorption Modulator,” Proceedings of ECOC 2001, paper Th.B.2.5 (2001).

Hoppe, K.

L. K. Oxenløwe, E. Hilliger, A. Tersigni, A. M. Nik, S. Højfeldt, K. Yvind, P. M. W. Skovgaard, K. Hoppe, and J. Hanberg, “All-optical Demultiplexing and Wavelength conversion in an Electroabsorption Modulator,” Proceedings of ECOC 2001, paper Th.B.2.5 (2001).

L. Xu, L.K. Oxenløwe, N. Chi, J. Mørk, P. Jeppesen, K. Hoppe, and J. Hanberg, “Experimental characterisation of wavelength conversion at 40Gb/s based on electroabsorption modulators,” IEEE Lasers and Electro-Optics Society 2002, paper MM3 (2002).
[Crossref]

L. Xu, L.K. Oxenløwe, N. Chi, F. P. Romstad, K. Yvind, J. Mørk, P. Jeppsen, K. Hoppe, and J. Hanberg, “Bandwidth and chirp characterisation of wavelength conversion based on electroabsorption modulators,” Proceedings of ECOC 2002, paper P1.26 (2002).

Jeppesen, P.

L. Xu, L.K. Oxenløwe, N. Chi, J. Mørk, P. Jeppesen, K. Hoppe, and J. Hanberg, “Experimental characterisation of wavelength conversion at 40Gb/s based on electroabsorption modulators,” IEEE Lasers and Electro-Optics Society 2002, paper MM3 (2002).
[Crossref]

Jeppsen, P.

J.J. Yu, X.Y. Zheng, F.H. Liu, C. Peucheret, A.T. Clausen, H.N. Poulsen, and P. Jeppsen, “8×40 Gb/s 55-km WDM Transmission over Conventional Fiber Using a New RZ Optical Source,” IEEE Photon. Technol. Lett. 12, 912–914 (2000).
[Crossref]

L. Xu, L.K. Oxenløwe, N. Chi, F. P. Romstad, K. Yvind, J. Mørk, P. Jeppsen, K. Hoppe, and J. Hanberg, “Bandwidth and chirp characterisation of wavelength conversion based on electroabsorption modulators,” Proceedings of ECOC 2002, paper P1.26 (2002).

Johnson, B. C.

T. H. Wood, J. Z. Pastalan, C. A. Burrus, B. C. Johnson, B. I. Miller, J. L. Demiguel, U. Koren, and M. G. Young, “Electric field screening by photogenerated holes in multiple quantum wells: A new mechanism for absorption saturation,” Appl. Phys. Lett. 57, 1081–1083 (1990).
[Crossref]

Koren, U.

T. H. Wood, J. Z. Pastalan, C. A. Burrus, B. C. Johnson, B. I. Miller, J. L. Demiguel, U. Koren, and M. G. Young, “Electric field screening by photogenerated holes in multiple quantum wells: A new mechanism for absorption saturation,” Appl. Phys. Lett. 57, 1081–1083 (1990).
[Crossref]

Liu, F.H.

J.J. Yu, X.Y. Zheng, F.H. Liu, C. Peucheret, A.T. Clausen, H.N. Poulsen, and P. Jeppsen, “8×40 Gb/s 55-km WDM Transmission over Conventional Fiber Using a New RZ Optical Source,” IEEE Photon. Technol. Lett. 12, 912–914 (2000).
[Crossref]

Miller, B. I.

T. H. Wood, J. Z. Pastalan, C. A. Burrus, B. C. Johnson, B. I. Miller, J. L. Demiguel, U. Koren, and M. G. Young, “Electric field screening by photogenerated holes in multiple quantum wells: A new mechanism for absorption saturation,” Appl. Phys. Lett. 57, 1081–1083 (1990).
[Crossref]

Mørk, J.

L. Xu, L.K. Oxenløwe, N. Chi, J. Mørk, P. Jeppesen, K. Hoppe, and J. Hanberg, “Experimental characterisation of wavelength conversion at 40Gb/s based on electroabsorption modulators,” IEEE Lasers and Electro-Optics Society 2002, paper MM3 (2002).
[Crossref]

L. Xu, L.K. Oxenløwe, N. Chi, F. P. Romstad, K. Yvind, J. Mørk, P. Jeppsen, K. Hoppe, and J. Hanberg, “Bandwidth and chirp characterisation of wavelength conversion based on electroabsorption modulators,” Proceedings of ECOC 2002, paper P1.26 (2002).

Moulton, N.

E. S. Awad, P. S. Cho, C. Richardson, N. Moulton, and J. Goldhar, “Optical 3R regeneration with all-optical timing extraction and simultaneous wavelength conversion using a single Electro-Absorption Modulator,” Proceedings of ECOC 2002, paper 6.3.2 (2002).

Nik, A. M.

L. K. Oxenløwe, E. Hilliger, A. Tersigni, A. M. Nik, S. Højfeldt, K. Yvind, P. M. W. Skovgaard, K. Hoppe, and J. Hanberg, “All-optical Demultiplexing and Wavelength conversion in an Electroabsorption Modulator,” Proceedings of ECOC 2001, paper Th.B.2.5 (2001).

Oxenløwe, L. K.

L. K. Oxenløwe, E. Hilliger, A. Tersigni, A. M. Nik, S. Højfeldt, K. Yvind, P. M. W. Skovgaard, K. Hoppe, and J. Hanberg, “All-optical Demultiplexing and Wavelength conversion in an Electroabsorption Modulator,” Proceedings of ECOC 2001, paper Th.B.2.5 (2001).

Oxenløwe, L.K.

L. Xu, L.K. Oxenløwe, N. Chi, J. Mørk, P. Jeppesen, K. Hoppe, and J. Hanberg, “Experimental characterisation of wavelength conversion at 40Gb/s based on electroabsorption modulators,” IEEE Lasers and Electro-Optics Society 2002, paper MM3 (2002).
[Crossref]

L. Xu, L.K. Oxenløwe, N. Chi, F. P. Romstad, K. Yvind, J. Mørk, P. Jeppsen, K. Hoppe, and J. Hanberg, “Bandwidth and chirp characterisation of wavelength conversion based on electroabsorption modulators,” Proceedings of ECOC 2002, paper P1.26 (2002).

Pastalan, J. Z.

T. H. Wood, J. Z. Pastalan, C. A. Burrus, B. C. Johnson, B. I. Miller, J. L. Demiguel, U. Koren, and M. G. Young, “Electric field screening by photogenerated holes in multiple quantum wells: A new mechanism for absorption saturation,” Appl. Phys. Lett. 57, 1081–1083 (1990).
[Crossref]

Peucheret, C.

J.J. Yu, X.Y. Zheng, F.H. Liu, C. Peucheret, A.T. Clausen, H.N. Poulsen, and P. Jeppsen, “8×40 Gb/s 55-km WDM Transmission over Conventional Fiber Using a New RZ Optical Source,” IEEE Photon. Technol. Lett. 12, 912–914 (2000).
[Crossref]

Poulsen, H.N.

J.J. Yu, X.Y. Zheng, F.H. Liu, C. Peucheret, A.T. Clausen, H.N. Poulsen, and P. Jeppsen, “8×40 Gb/s 55-km WDM Transmission over Conventional Fiber Using a New RZ Optical Source,” IEEE Photon. Technol. Lett. 12, 912–914 (2000).
[Crossref]

Richardson, C.

E. S. Awad, P. S. Cho, C. Richardson, N. Moulton, and J. Goldhar, “Optical 3R regeneration with all-optical timing extraction and simultaneous wavelength conversion using a single Electro-Absorption Modulator,” Proceedings of ECOC 2002, paper 6.3.2 (2002).

Romstad, F. P.

L. Xu, L.K. Oxenløwe, N. Chi, F. P. Romstad, K. Yvind, J. Mørk, P. Jeppsen, K. Hoppe, and J. Hanberg, “Bandwidth and chirp characterisation of wavelength conversion based on electroabsorption modulators,” Proceedings of ECOC 2002, paper P1.26 (2002).

Skovgaard, P. M. W.

L. K. Oxenløwe, E. Hilliger, A. Tersigni, A. M. Nik, S. Højfeldt, K. Yvind, P. M. W. Skovgaard, K. Hoppe, and J. Hanberg, “All-optical Demultiplexing and Wavelength conversion in an Electroabsorption Modulator,” Proceedings of ECOC 2001, paper Th.B.2.5 (2001).

Suzuki, M.

N. Edagawa, M. Suzuki, and S. Yamanoto, “Novel wavelength converter using an electroabsorption modulator,” IEICE Trans. Electron. E81-C, 1251–2157 (1998).

M. Suzuki, H. Tanaka, and S. Akiba, “Effect of hole pile-up at heterointerface on modulation voltage in GaInAsP electroabsorption modulators,” Electron. Lett. 25, no. 2, 88–89 (1989).
[Crossref]

Tanaka, H.

M. Suzuki, H. Tanaka, and S. Akiba, “Effect of hole pile-up at heterointerface on modulation voltage in GaInAsP electroabsorption modulators,” Electron. Lett. 25, no. 2, 88–89 (1989).
[Crossref]

Tersigni, A.

L. K. Oxenløwe, E. Hilliger, A. Tersigni, A. M. Nik, S. Højfeldt, K. Yvind, P. M. W. Skovgaard, K. Hoppe, and J. Hanberg, “All-optical Demultiplexing and Wavelength conversion in an Electroabsorption Modulator,” Proceedings of ECOC 2001, paper Th.B.2.5 (2001).

Wood, T. H.

T. H. Wood, J. Z. Pastalan, C. A. Burrus, B. C. Johnson, B. I. Miller, J. L. Demiguel, U. Koren, and M. G. Young, “Electric field screening by photogenerated holes in multiple quantum wells: A new mechanism for absorption saturation,” Appl. Phys. Lett. 57, 1081–1083 (1990).
[Crossref]

T. H. Wood, “Multiple Quantum Well (MQW) Waveguide Modulators,” J. Lightwave Technol. 6, 743–757 (1988).
[Crossref]

Xu, L.

L. Xu, L.K. Oxenløwe, N. Chi, J. Mørk, P. Jeppesen, K. Hoppe, and J. Hanberg, “Experimental characterisation of wavelength conversion at 40Gb/s based on electroabsorption modulators,” IEEE Lasers and Electro-Optics Society 2002, paper MM3 (2002).
[Crossref]

L. Xu, L.K. Oxenløwe, N. Chi, F. P. Romstad, K. Yvind, J. Mørk, P. Jeppsen, K. Hoppe, and J. Hanberg, “Bandwidth and chirp characterisation of wavelength conversion based on electroabsorption modulators,” Proceedings of ECOC 2002, paper P1.26 (2002).

Yamanoto, S.

N. Edagawa, M. Suzuki, and S. Yamanoto, “Novel wavelength converter using an electroabsorption modulator,” IEICE Trans. Electron. E81-C, 1251–2157 (1998).

Young, M. G.

T. H. Wood, J. Z. Pastalan, C. A. Burrus, B. C. Johnson, B. I. Miller, J. L. Demiguel, U. Koren, and M. G. Young, “Electric field screening by photogenerated holes in multiple quantum wells: A new mechanism for absorption saturation,” Appl. Phys. Lett. 57, 1081–1083 (1990).
[Crossref]

Yu, J.J.

J.J. Yu, X.Y. Zheng, F.H. Liu, C. Peucheret, A.T. Clausen, H.N. Poulsen, and P. Jeppsen, “8×40 Gb/s 55-km WDM Transmission over Conventional Fiber Using a New RZ Optical Source,” IEEE Photon. Technol. Lett. 12, 912–914 (2000).
[Crossref]

Yvind, K.

L. K. Oxenløwe, E. Hilliger, A. Tersigni, A. M. Nik, S. Højfeldt, K. Yvind, P. M. W. Skovgaard, K. Hoppe, and J. Hanberg, “All-optical Demultiplexing and Wavelength conversion in an Electroabsorption Modulator,” Proceedings of ECOC 2001, paper Th.B.2.5 (2001).

L. Xu, L.K. Oxenløwe, N. Chi, F. P. Romstad, K. Yvind, J. Mørk, P. Jeppsen, K. Hoppe, and J. Hanberg, “Bandwidth and chirp characterisation of wavelength conversion based on electroabsorption modulators,” Proceedings of ECOC 2002, paper P1.26 (2002).

Zheng, X.Y.

J.J. Yu, X.Y. Zheng, F.H. Liu, C. Peucheret, A.T. Clausen, H.N. Poulsen, and P. Jeppsen, “8×40 Gb/s 55-km WDM Transmission over Conventional Fiber Using a New RZ Optical Source,” IEEE Photon. Technol. Lett. 12, 912–914 (2000).
[Crossref]

Appl. Phys. Lett. (1)

T. H. Wood, J. Z. Pastalan, C. A. Burrus, B. C. Johnson, B. I. Miller, J. L. Demiguel, U. Koren, and M. G. Young, “Electric field screening by photogenerated holes in multiple quantum wells: A new mechanism for absorption saturation,” Appl. Phys. Lett. 57, 1081–1083 (1990).
[Crossref]

Electron. Lett. (1)

M. Suzuki, H. Tanaka, and S. Akiba, “Effect of hole pile-up at heterointerface on modulation voltage in GaInAsP electroabsorption modulators,” Electron. Lett. 25, no. 2, 88–89 (1989).
[Crossref]

IEEE Photon. Technol. Lett. (1)

J.J. Yu, X.Y. Zheng, F.H. Liu, C. Peucheret, A.T. Clausen, H.N. Poulsen, and P. Jeppsen, “8×40 Gb/s 55-km WDM Transmission over Conventional Fiber Using a New RZ Optical Source,” IEEE Photon. Technol. Lett. 12, 912–914 (2000).
[Crossref]

IEICE Trans. Electron. (1)

N. Edagawa, M. Suzuki, and S. Yamanoto, “Novel wavelength converter using an electroabsorption modulator,” IEICE Trans. Electron. E81-C, 1251–2157 (1998).

J. Lightwave Technol. (1)

T. H. Wood, “Multiple Quantum Well (MQW) Waveguide Modulators,” J. Lightwave Technol. 6, 743–757 (1988).
[Crossref]

Other (4)

E. S. Awad, P. S. Cho, C. Richardson, N. Moulton, and J. Goldhar, “Optical 3R regeneration with all-optical timing extraction and simultaneous wavelength conversion using a single Electro-Absorption Modulator,” Proceedings of ECOC 2002, paper 6.3.2 (2002).

L. Xu, L.K. Oxenløwe, N. Chi, F. P. Romstad, K. Yvind, J. Mørk, P. Jeppsen, K. Hoppe, and J. Hanberg, “Bandwidth and chirp characterisation of wavelength conversion based on electroabsorption modulators,” Proceedings of ECOC 2002, paper P1.26 (2002).

L. K. Oxenløwe, E. Hilliger, A. Tersigni, A. M. Nik, S. Højfeldt, K. Yvind, P. M. W. Skovgaard, K. Hoppe, and J. Hanberg, “All-optical Demultiplexing and Wavelength conversion in an Electroabsorption Modulator,” Proceedings of ECOC 2001, paper Th.B.2.5 (2001).

L. Xu, L.K. Oxenløwe, N. Chi, J. Mørk, P. Jeppesen, K. Hoppe, and J. Hanberg, “Experimental characterisation of wavelength conversion at 40Gb/s based on electroabsorption modulators,” IEEE Lasers and Electro-Optics Society 2002, paper MM3 (2002).
[Crossref]

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Figures (4)

Fig. 1.
Fig. 1.

Experimental set-up.

Fig. 2.
Fig. 2.

Spectra of the WDM signals at (a) input of the EAM, (b) output of the EAM when a control signal is injected, (c) output of the EAM without the injection of a control signal.

Fig. 3.
Fig. 3.

BERs of the control signal and the converted signal at 1560.6 nm. The insert shows the spectrum and the eye diagram of the converted signal, as well as the eye diagram of the control signal.

Fig. 4.
Fig. 4.

Receiver sensitivity of all seven converted signals. The insert shows the eye diagrams of six channels with wavelength shorter than 1560 nm.

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