access icon free Performance evaluation of four-level modified Manchester modulation format for high-speed optical transmission systems

© The Institution of Engineering and Technology
Received 10/11/2018, Accepted 17/06/2019, Revised 07/05/2019, Published 21/06/2019

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.

Inspec keywords: optical receivers; optical fibre dispersion; optical fibre networks; pulse amplitude modulation; optical modulation; error statistics; optical fibre communication

Other keywords: 4-MM format; 4-MM technique; chromatic dispersion tolerance; Manchester signalling; four-level modified Manchester modulation format; four-level pulse amplitude modulation formats; binary MM modulation; conventional Manchester modulation; bit error rate assessment version; 4-PAM; high-speed optical access; high-speed optical transmission systems; multilevel modulation scheme; noise figure 3.0 dB; receiver sensitivity; high-speed optical fibre transmission links; time 95.0 ps

Subjects: Radio links and equipment; Other topics in statistics; Optical propagation, dispersion and attenuation in fibres; Optical fibre networks; Optical communication equipment; Fibre optics; Modulation and coding methods

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