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L-band PON (NG-PON2) fault detection/monitoring and PWR using C-band ASEN and FBGs

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Abstract

With the propelling high capacity demands, long band (L-Band) passive optical networks (PONs) are getting extra consideration nowadays and fault detection/Monitoring is becoming crucial because of high capacity PONs. Fault detection using reflective Fiber Bragg gratings and an additional amplified spontaneous noise (ASEN) source in conventional band (C-Band) are widely reported. However, ASEN and transmitter signals in the same wavelength band cause interference and incorporation of additional ASEN sources increases overall cost. Therefore, an economical, complexity reduced fault detection system is required in PONs. In this work, a fault detection/monitoring system is proposed for L-Band PON using C-Band ASEN from inline erbium doped fiber amplifier and dual purpose FBG i.e. (1) ASEN reflection for fault monitoring and (2) Pulse width reduction. A 4 × 10 Gbps L-Band PON is investigated over 40 km feeder fiber (FF) which serve 32 optical network units (ONUs)/λ at different input powers, PWB, laser linewidths, chirping profiles of FBG in terms of reflective power of FBGs, eye opening factor, correct bit reception rate and pulse width reduction efficiency (PWRE) respectively. Reflective power from FBG and correct bit reception rate, decrease with the increase in input power and laser linewidth respectively. Moreover, FBG after FF provide PWRE of 60%, 75.8%, 73.06%, 72.41% and 65.5% in case of no chirping, liner, quadratic, square root and cube root respectively. Proposed system can detect fault without affecting data rate in optical distribution network and ONU, also compensate PWB effects.

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Acknowledgements

The authors would like to acknowledge the management and technical team of Punjab Technical University, Jalandhar for providing the state of the art laboratory facility to carry out the research work.

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This is to declare that no funding has been provided by any internal/external agency for this research work.

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Authors and Affiliations

  1. I.K. Gujral Punjab Technical University, Kapurthala, India

    Shippu Sachdeva

  2. Lovely Professional University, Jalandhar, India

    Shippu Sachdeva

  3. DAV Institute of Engineering and Technology, Jalandhar, India

    Jagjit Malhotra & Manoj Kumar

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  1. Shippu Sachdeva
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  2. Jagjit Malhotra
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Correspondence to Shippu Sachdeva.

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Sachdeva, S., Malhotra, J. & Kumar, M. L-band PON (NG-PON2) fault detection/monitoring and PWR using C-band ASEN and FBGs. Opt Quant Electron 54, 453 (2022). https://doi.org/10.1007/s11082-022-03854-x

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