Abstract
Abstract Hybrid wavelength division multiplexing (WDM) and polarization division multiplexing (PDM) technology is a promising candidate for high capacity and extended reach in visible light communication (VLC) systems. However, multilevel modulations and direct modulation are suffered from two predominant limitations in VLC such as high complexity and frequency chirping respectively. Therefore, in this work, a high-capacity VLC system is presented by employing a hybrid WDM-PDM and compressed spectrum return to zero (CSRZ) advanced modulation format. Moreover, direct modulation is replaced with external modulation employing Mach-Zehndar modulators and red/green/blue (RGB) laser diodes (LDs). A detailed comparison of non-return to zero (NRZ) and CSRZ is performed at varied VLC lengths in terms of bit error rate (BER) and Q factor. Results revealed that CSRZ is far better than NRZ and external modulation offered an edge over direct modulation. The maximum VLC distance achieved using CSRZ is 229 cm within acceptable BER limits (10−3) without forward error correction (FEC).
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 callDisclaimer: 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.
