Half-duplex transmission avoiding rayleigh backscattering crosstalk in UDWDM-PON with coherent receivers
Document typeConference report
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Rights accessOpen Access
Ultra Dense Wavelength Division Multiplexing (UDWDM) is a promising technique for access PON, introducing the wavelength-to-the-user concept. The key enabling technology will be a new cost-effective coherent detection scheme, providing high splitting ratios and long-reach extension. This also will allow implementing low-cost, yet effective, coherent terminals suitable for mass deployment. Employing a unique laser diode as transmitter and receiver local oscillator at the ONU to realize a cheap terminal implies to use the same wavelength for both up and down directions; therefore, in Full-Duplex (FD) transmission mode the Rayleigh Backscattering (RB) crosstalk will drastically perturb the reception. We propose and study a Half-Duplex (HD) solution to avoid the RB disturbance and analyze the different scenarios of reach and splitting ratios.
CitationSegarra, J. [et al.]. Half-duplex transmission avoiding rayleigh backscattering crosstalk in UDWDM-PON with coherent receivers. A: International Conference on Transparent Optical Networks. "ICTON 2014: 16th International Conference on Transparent Optical Networks: Graz, 6th-10th July, 2014". Graz: Institute of Electrical and Electronics Engineers (IEEE), 2014, p. 6876283-1-6876283-5.
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder