Abstract

A novel scheme based on 40Gb/s vestigial sideband modulation for optical payload and label multiplex and separation in all optical label switching (AOLS) networks is firstly proposed and experimentally demonstrated. The payload is combined and separated with wavelength labels by optical filters. The experiment results show that after label separation, the power penalties of payload and label are both very little. The influence of the wavelength difference between label and payload is also discussed. The power penalty of payload can be less than 1dB as long as the wavelength difference is larger than 0.1nm. This scheme highly reduces the channel bandwidth of payload and label and is proposing to be used in future optical Internet.

© 2005 Optical Society of America

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References

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ECOC 2004 Proceedings (1)

A.Agarwal, S.Chandrasekhar and R.-J.Essiambre, �??VSB-CSRZ for Spectrally Efficient Optically-Routed Networks,�?? ECOC 2004 Proceedings, vol.3, Paper We3.4.4.

Electron. Lett. (2)

G.K.Chang and J.Yu, �??40 Gbit/s payload and 2.5 Gbit/s label generation using optical carrier suppression and separation,�?? Electron. Lett. 40, 442-444 (2004).
[CrossRef]

Z.S. Jia, M.H.Chen and S.Z.Xie, �??Label erasing employing Lyot-Sagnac filter,�?? Electron. Lett. 38, 1563-1564 (2002).
[CrossRef]

IEEE Communication Magazine (1)

Tarek S. El-Bawab and Jong-Dug Shin, �??Optical Packet Switching in Core Networks: Between Vision and Reality,�?? IEEE Communication Magazine 40, 61-65 (2002).
[CrossRef]

IEEE Photon. Technol. Lett. (4)

Y. M. Lin,W. I.Way, and G. K. Chang, �??A novel optical label swapping technique using erasable optical single-sideband subcarrier label,�?? IEEE Photon. Technol. Lett. 12, 1088�??1090 (2000).
[CrossRef]

Nan Chi, Jianfeng Zhang, and Palle Jeppesen, �??All-Optical Subcarrier Labeling Based on the Carrier Suppression of the Payload,�?? IEEE Photon. Technol. Lett. 15, 781�??78 (2003).
[CrossRef]

Jianjun Yu and Gee-kung Chang, �??A Novel Technique for Optical Label and Payload Generation and Multiplexing Using Optical Carrier Suppression and Separation,�?? IEEE Photon. Technol. Lett. 16, 320�??322 (2004).
[CrossRef]

Jianjun Yu, Gee-kung Chang and Qimin Yang, �??Optical Label Swapping in a Packet-Switched Optical Network Using Optical Carrier Suppression, Separation, and Wavelength Conversion,�?? IEEE Photon. Technol. Lett. 16, 2156�??2158 (2004).
[CrossRef]

J. Lightwave Technol. (1)

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Figures (7)

Fig. 1.
Fig. 1.

Principle of generating payload and label.

Fig. 2.
Fig. 2.

Experiment setup. CWL: continuous wavelength laser, T-CWL: tunable CWL, MZM: Mach-Zender modulator, TOF: tunable optical filter, OC: optical coupler, OBPF: optical bandpass filter, Cir: circulator, T-FBG: tunable FBG, BERT: BER tester.

Fig. 3.
Fig. 3.

Optical Spectra, the resolution of all is 0.01nm (a) CSRZ, (b) VSB-CSRZ combined with label, (c) payload passing through FBG, (d) label separated by FBG reflecting.

Fig. 4.
Fig. 4.

Measured eye diagrams (a) VSB-CSRZ back-to-back (b) VSB-CSRZ after label separated (c) label back-to-back (d) label after separation.

Fig. 5.
Fig. 5.

BER performance of the payload and label for back-to-back and after FBG separation.

Fig. 6.
Fig. 6.

BER curves of different label wavelength.

Fig. 7.
Fig. 7.

Power penalties of different channel bandwidths.

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