About the session
Cable operators need to segment their HFC network to increase capacity both on the forward and on the return. However, there is not always enough fibre installed to serve those new segments. Adding fibre is also often non-practical and a very expensive proposition. Clearly, there is a need for wavelength division multiplexing (WDM) technology. This presentation reviews the challenges and studies the solutions for using wavelength division multiplexing in the forward path of an HFC network. It describes the different physical phenomena that limit the transmission distance and/or the number of wavelength and reviews and evaluates the different technology available to mitigate those phenomena in term of performance, ease of use and cost.
