Optical cross-connect based on tuneable FBG-OC with full scalability and bidirectionality

Citation

O. Fraz~ao, I. Terroso, J.P. Carvalho, and H.M. Salgado, "Optical cross-connect based on tuneable FBG-OC with full scalability and bidirectionality," Optics Communications, 220, 105–109 (2003), doi: 10.1016/S0030-4018(03)01358-0

Keywords

  • Optical cross-connect (OXC)
  • Tuneable fibre Bragg grating (FBG)
  • Optical circulator (OC)
  • Scalability
  • Bidirectionality
  • Wavelength routing
  • Wavelength division multiplexing (WDM)
  • Network survivability
  • Routing modules
  • Switching states (bar-state, cross-state, simultaneous-state)
  • Wavelength selective filters
  • Crosstalk
  • Insertion loss
  • Homodyne crosstalk
  • Heterodyne crosstalk
  • Apodized FBGs (AP-FBGs)
  • Uniform FBGs (U-FBGs)
  • Dead zone
  • Sub-band approach
  • Beneš network
  • Nonblocking network

Brief

The article proposes and demonstrates a scalable and bidirectional optical cross-connect (OXC) architecture based on tuneable fiber Bragg gratings (FBGs) and optical circulators (OCs) for routing wavelengths in WDM networks.

Summary

This paper proposes and demonstrates a scalable and bidirectional optical cross-connect (OXC) built with tuneable fiber Bragg gratings (FBGs) and optical circulators (OCs). The architecture allows for routing of any input wavelength and is experimentally shown to have good performance in terms of crosstalk (worst case 20.4 dB isolation) and insertion loss (maximum 2.14 dB). The article also discusses methods for handling a large number of wavelengths using FBG detuning and apodized FBGs to improve crosstalk, as well as the potential for scaling the design to larger networks using Beneš and Cl€os topologies. A key feature highlighted is the potential for bidirectional operation, which is not commonly found in other FBG-based OXC designs.

Origin: https://sci.bban.top/pdf/10.1016/s0030-4018%252803%252901358-0.pdf#

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