A Novel Scheme for UDWDM-PON Broadband Access Network Using Injection-Locked Phase-to-intensity Modulation Converter

摘要

In this paper, we have proposed and analyzed a novel cost-effective ultradense wavelength division multiplexed (UDWDM) passive optical network (PON) which uses phase modulation (PM) of the optical carriers in the optical line terminal (OLT) in order to achieve inherent noise immunity in the network. In the demodulation of the optical PM signal at the optical network unit (ONU), we have proposed to use a simple injection-locked Fabry-Perot (FP) laser diode (LD) for achieving PM to intensity modulation (IM) converter which is followed by a photodiode to recover the specific channel information. A detailed analysis of PM-IM conversion in an injection-locked FPLD has been carried out and the viability of the proposed scheme has been established. The proposed UDWDM-PON which is a broadband access network is cost-effective and long reach.