Design And Analysis Of A Colorless ONU For Multi-Wavelength PON

With the increasing demands for multimedia services, the telecommunication traffic has stepped up enormously, especially in mobile data service. Benefitted from the broadband capacity of optical fiber cable network, the bandwidth resource is relatively sufficient in the backbone network. However, the limitation of bandwidth in access network regime has grown significantly. Thanks to the multi-service load ability, uncomplicated operation and giant bandwidth, the technology of Multi-wavelength Passive Optical Network (WDM PON), is becoming a finally solution to achieve the first kilometer wide band connection. Nevertheless, high cost in network deployment is the dominant restriction in the progress of the commercialization. The research of the "colorless" and cost-effective optical transceiver etc., becomes critical.Inspired by the structure of Michelson Interferometer (MI), the following "RSOA-MI" structure is proposed as a novel Reflective Semiconductor Optical Amplifier (RSOA) based remote node applied in the colorless ONU as a kind of solution in Multi-wavelength Passive Optical Network. It is elaborated on the technical background and theory principle of the structure. And the analysis of the applied system performance is also presented in the work. By comparing with the other colorless ONU solutions, the. evaluation of the RSOA-MI has been given with the preview research. The work and the contributions are outlined as follows.1)The introduction has been conducted about the Multi-wavelength Passive Optical Network. It is viewed by the comparison with recent solutions of colorless ONU, from the operating principle and system performance analysis.2) The characteristic of RSOA, as well as the RSOA model theory is reviewed. In greater depth, the system performance of the designated RSOA-MI is discussed. For the single-fiber bi-directional transmission system, the Rayleigh Backscattering, which mainly influenced on system performance, has been discussed as well. Taking account of the optimal system simulating performance, the preference values of those parameters related to the RSOA model, are figured out as used in the proposed structure.3) The re-modulation technique based on the RSOA-MI applied in colorless ONU is proposed. Then, the simulation platform is constructed to prove the generation of different modulation format in optical domain by RSOA-MI. Furthermore, to evaluate the operating performance of the applied ONU, the simulative results and related analysis are explained with the eye profile and the penalty of Eye Opening Factor in chief. In conclusion, the summary of the characteristic and system performance of the designated ONU is described.