Crosstalk analysis of FBG-based bidirectional optical crossconnects

Citation

W.-D. Zhong, H. Yuan, and W. Hu, "Crosstalk analysis of FBG-based bidirectional optical crossconnects," Optics Communications, 238, 91–103 (2004), doi: 10.1016/j.optcom.2004.04.034

Keywords

• Bidirectional optical crossconnects (BOXCs)
• Fiber Bragg gratings (FBGs)
• Optical circulators (OCs)
• Crosstalk analysis
• In-band crosstalk
• Coherent crosstalk
• Incoherent crosstalk
• Power penalty
• Bit error rate (BER)
• Wavelength division multiplexing (WDM)
• Bidirectional WDM ring networks (BWRNs)
• Reflectivity of FBGs
• Isolation of FBGs
• Monte Carlo simulation
• Insertion loss
• Rayleigh backscattering
• Tunable FBGs
• Fixed FBGs

Brief

This article presents an analytical model and Monte Carlo simulation to analyze the impact of coherent and incoherent in-band crosstalk on the power penalty of bit error rate in a proposed FBG-based bidirectional optical crossconnect (BOXC), finding that the isolation of FBGs has a more stringent requirement than their reflectivity.

Summary

This article analyzes crosstalk (both coherent and incoherent) in a previously proposed bidirectional optical crossconnect (BOXC) design that uses fiber Bragg gratings (FBGs) and optical circulators. Through analytical modeling and Monte Carlo simulations, the authors investigated how crosstalk affects the bit error rate (BER) power penalty. The main finding is that the isolation of the FBGs has a more significant impact and a more stringent requirement than the reflectivity of the FBGs in ensuring good performance of the BOXC. The study also found that decreasing FBG reflectivity and isolation, and increasing the number of WDM channels, increases the probability of higher power penalties.

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