Abstract
Abstract In this work, we introduce a new concept of frequency interleaving applied to passive optical networks based in Dense Wavelength Division Multiplexing (DWDM). In order to explore colorless ONUs approach, a single and centralized optical source is used to create the interleaved wavelengths for the downstream and upstream path. In this case, frequency comb generation implemented by recirculating frequency shifting technique allowed the creation of all the wavelengths used in each path. The reception operation is accomplished by introducing, at the ONU side, a combination of a set of optical passive elements. The system with 4 × 12.5 Gbit/s NRZ-OOK (Not Return to Zero - On-Off Keying) modulation format were simulated through 20 km of standard single mode fiber link in both transmission paths. In order to guarantee a high quality optical frequency comb source, the optical carrier-to-noise-ratio (OCNR) was evaluated as well as BER (bit error rate), to analyze the system performance. All devices models and simulations were performed in Matlab environment.
Highlights
Wavelength division multiplexed passive optical networks (WDM-PONs) have been extensively studied for applications that involve large bandwidth over the last years
The BER curve was obtained for the Optical Network Units (ONUs) maximum distance from the Optical Line Terminal (OLT) of 20 km of SMF in downstream/upstream path without dispersion compensation, as can be seen in Fig. 7 and Fig. 8
In this paper, we explored the concept of frequency interleaving in passive optical networks based in Dense Wavelength Division Multiplexing (DWDM) to provide coexistence with previous generations of PONs in future generation of networks
Summary
Wavelength division multiplexed passive optical networks (WDM-PONs) have been extensively studied for applications that involve large bandwidth over the last years. In order to improve the spectral efficiency and provide coexistence with previous generations of PONs, the frequency interleaving of downstream and upstream signals could be considered as a solution for the wavelength plan of the generation of optical access networks.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Microwaves, Optoelectronics and Electromagnetic Applications
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
