200 Gbps/λ PON Downstream C-band Direct-Detection Links with ≥29 dB Power Budget
نویسندگان
چکیده
In this paper we present the simulative analysis of a 200 Gbps per wavelength (λ) 8-level pulse amplitude modulation (PAM-8) downstream communication over up to 20 km single mode fiber (SMF) in C-band based on direct detection (DD) achieving at least 29 dB link power budget PON environment. We use chromatic dispersion digital pre-compensation (CD-DPC) and dual-arm in-phase quadrature Mach–Zehnder modulator (IQ-MZM) optical line termination (OLT) side, while preserving DD network unit (ONU). Three receiver digital-signal-processing (DSP) options are analyzed compared: square-root-like technique (SQRT) combination with feed forward equalizer (FFE) decision feedback (DFE), Volterra nonlinear (VNLE), SQRT VNLE. The can be applied VNLE decrease DSP complexity maintaining required system performance. show that PAM-8 CD-DPC is feasible solution for λ transmission PON.
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ژورنال
عنوان ژورنال: Applied sciences
سال: 2022
ISSN: ['2076-3417']
DOI: https://doi.org/10.3390/app12073538