Open AccessPerformance evaluation of four‐level modified Manchester modulation format for high‐speed optical transmission systems
Author(s) -
Idowu Oluwajobi Festus,
Nguyen DongNhat,
Malekmohammadi Amin
Publication year - 2019
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2018.6113
Subject(s) - pulse amplitude modulation , modulation (music) , sensitivity (control systems) , transmission (telecommunications) , computer science , bit error rate , optics , optical power , dispersion (optics) , telecommunications , electronic engineering , physics , pulse (music) , detector , engineering , decoding methods , laser , acoustics
A new multilevel modulation scheme centred on Manchester signalling known as four‐level modified Manchester (4‐MM) modulation format is envisioned and proven statistically for high‐speed optical fibre transmission links. Similarly, the bit error rate (BER) assessment version has been developed for the envisioned 4‐MM format. The performance of new 4‐MM is examined and compared with conventional Manchester modulation, binary MM modulation, and four‐level pulse amplitude modulation (4‐PAM) formats in relation to receiver sensitivity, spectral efficiency, and chromatic dispersion tolerance. Therefore, the computed receiver sensitivity and chromatic dispersion tolerance at 10 −9 BER of the envisioned 4‐MM are −21.5 dBm and 95 ps/nm, respectively. The receiver sensitivity of 4‐MM was improved by 3 dB in comparison with 4‐PAM in a back‐to‐back configuration. Similarly, assessment of results indicates that 4‐MM technique has a distinct benefit in comparison with binary MM and 4‐PAM in achieving a dynamic role in the subsequent generation of high‐speed optical access and short reach networks where power efficiency is of critical important.