Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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RSOA-Based Wavelength-Reuse Gigabit WDM-PON

  • Kim, Byoung-Whi (WDM-PON Technology Team, Electronics and Telecommunications Research Institute)
  • Received : 2008.11.13
  • Accepted : 2008.12.09
  • Published : 2008.12.31
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Abstract

This article presents the RSOA-based re-modulation schemes for practical application to the WDM-PON link. Emphasis is put on the three methods for reducing the residual downstream signal in the upstream transmission; the simplest one is to use the RSOA gain-saturation property, the second uses selective filtering of the adiabatic-chirped DFB-LD output spectrum, and the last uses a dynamic RSOA gain control by varying its driving current according to the incident binary signal. The reflection sensitivity in the proposed re-modulation link is also qualitatively presented in the cases of using two different types of seed light: coherent light from DFB-LD array and spectrum-sliced incoherent ASE light. We show experimental results of an error-free bidirectional gigabit transmission over 20 km at -30 dB reflection with the spectrum-sliced ASE seed light.

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References

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