Reduction of backscattering noise in 2.5 and 10 Gbit/s RSOA-based WDM-PON

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Reduction of backscattering noise in 2.5 and 10 Gbit/s RSOA-based WDM-PON

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© The Institution of Engineering and Technology
Published

Rayleigh backscattering (RBS) causes significant power penalty in a centrally light-seeded wavelength division multiplexed passive optical network (WDM-PON). In this reported work, the RBS noise in a WDM-PON based on a reflective semiconductor optical amplifier (RSOA) is successfully mitigated by means of noise predictive equalisation. Conventional equalisers are implemented at the receiver with an additional noise canceller that can estimate and reduce the reflection noise. It is experimentally demonstrated that the proposed equaliser enhances the reflection tolerance significantly at data rates of 2.5 and 10 Gbit/s to −8.5 and −16.5 dB, respectively.

Inspec keywords: passive optical networks; wavelength division multiplexing; backscatter; Rayleigh scattering

Other keywords: wavelength division multiplexed passive optical network; Rayleigh backscattering; bit rate 2.5 Gbit/s; RSOA-based WDM-PON; noise canceller; power penalty; reflection tolerance; noise predictive equalisation; equalisers; bit rate 10 Gbit/s; backscattering noise; reflective semiconductor optical amplifier

Subjects: Radiowave propagation; Optical fibre networks; Multiplexing and switching in optical communication

References

    1. 1)
      • Presi, M., Chiuchiarelli, A., Proietti, R., Choudhury, P., Contestabile, G., Ciaramella, E.: `Single feeder bidirectional WDM-PON with enhanced resilience to Rayleigh-backscattering', Tech. Dig. OFC, 2010,, San Diego, CA, USA, paper OThG2.
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