Abstract

We investigate an Ethernet passive optical network (EPON) architecture accommodating multiple wavelengths for cost-effective and gradual capacity upgrades. We demonstrate the successful implementation of this multiwavelength PON (MWPON) architecture with dual feeder fiber using a reflective semiconductor optical amplifier (RSOA) at each optical network unit (ONU). The scalability of this MWPON is limited by the power of feeding light, RSOA operating conditions, temperature variations, and Rayleigh backscattering. We report on the possibility of a 16-user network with 20 km of feeder and 2.0 km of distribution fiber. With temperature controlled ONUs, the MWPON may deliver eight distinct wavelengths for upstream access with 10 Gbits/s aggregate capacity.

© 2007 Optical Society of America

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