Efficient Power-Saving 10-Gb/s ONU Using Uplink Usage-Dependent Sleep Mode Control Algorithm in WDM-PON

  • Lee, Han Hyub (Communications Internet Research Laboratory, ETRI) ;
  • Kim, Kwangok (Communications Internet Research Laboratory, ETRI) ;
  • Lee, Jonghyun (Communications Internet Research Laboratory, ETRI) ;
  • Lee, Sangsoo (Communications Internet Research Laboratory, ETRI)
  • Received : 2012.05.11
  • Accepted : 2012.12.13
  • Published : 2013.04.01


We propose and demonstrate an efficient power-saving optical network unit (ONU) based on upstream traffic monitoring for 10-Gb/s wavelength division multiplexed passive optical networks (WDM-PONs). The power-saving mode controller uses a ${\mu}$-processor and traffic monitoring modules followed by the proposed power-saving processes to operate the sleep mode ONU. The power consumption of the ONU is effectively reduced from 19.3 W to 6.4 W when no traffic from the users is detected. In addition, we design a power-saving mechanism based on a cyclic sleep mode operation to allow a connectivity check between the optical line terminal and ONU. Our calculation results show that the WDM-PON ONU reduces the power consumption by around 60% using the proposed mechanism.



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