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I recently joined a SCTE webinar my colleague, Joerick Santiago, who was presenting on the different methods for mitigating and eliminating Optical Beat Interference (OBI) from your RFoG network. As the number of subscriber being added to FTTH networks utilizing RFoG continue to rise, the risk for a poor customer experience rises with it due to the increase in upstream traffic, often times simultaneously, from multiple subscribers. Ultimately, this traffic occurring at the same time can lead to disruptions in service, which leads to customer service calls and costly troubleshooting. In a worst case scenario, it can lead to loss of subscribers if the problem is not resolved.
It was interesting to me that regardless of your deployment model, pure RFoG or a hybrid RFoG/EPON, OBI is still a threat to your subscriber’s experience. Joerick went on to explain the different solutions available today for OBI mitigation – wavelength randomization, active splitter, selectable upstream - bringing to light the pros and cons associated with each.
I thought he did a nice job of describing the entire storyline with RFoG and OBI:
As the newly appointed product manager of ADTRAN RFoG solutions, this was a great opportunity for me to hear one of our technical experts dive into RFoG and OBI.I encourage you to check out Joerick’s content on the SCTE site.