All-optical swapping of spectral amplitude code labels for packet-switched networks

Lawrence R. Chen

doi:10.1117/12.792516

29 August 2008 All-optical swapping of spectral amplitude code labels for packet-switched networks

Lawrence R. Chen

Proceedings Volume 7072, Optics and Photonics for Information Processing II; 707202 (2008) https://doi.org/10.1117/12.792516
Event: Optical Engineering + Applications, 2008, San Diego, California, United States

Abstract

Packet-switched networks have attracted considerable attention as a basis for next-generation optical networks due to their advantages in terms of flexibility and network efficiency over traditional circuit-switched networks. Optical code multi-protocol label switching (OC-MPLS) promises fast, flexible, power-efficient switching by keeping signals in the optical domain and avoiding costly conversions to the electrical domain. In this paper, we review the use of spectral amplitude codes (SACs) for implementing OC-MPLS labels. We discuss the principles and features, as well as key enabling technologies required for their processing. In particular, we compare three different approaches for low cost all-optical swapping of SAC labels. All approaches are based on semiconductor fiber lasers and exploit nonlinearity in a semiconductor device: the first uses cross-absorption modulation in an electroabsorption modulator, the second uses cross-gain modulation (XGM) in a semiconductor optical amplifier (SOA), and the third makes use of XGM in an SOA as well as injection locking in a Fabry-Pérot laser. We present the static and dynamic responses of each for swapping a multi-wavelength input label to a multi-wavelength output label. The benefits and limitations of each approach as well as future improvements are discussed. We also present the results of systems experiments which demonstrate error-free all-optical label swapping, recognition, and switching of multi-rate packets in packet-switched networks using multi-wavelength labels.

Citation Download Citation

Lawrence R. Chen "All-optical swapping of spectral amplitude code labels for packet-switched networks", Proc. SPIE 7072, Optics and Photonics for Information Processing II, 707202 (29 August 2008); https://doi.org/10.1117/12.792516

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KEYWORDS

Modulation

Chromium

Switching

Fiber Bragg gratings

Semiconductor lasers

Switches

Fiber lasers

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