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- Title
200 Gbps/λ PON Downstream C-Band Direct-Detection Links with ≥29 dB Power Budget.
- Authors
Wang, Haoyi; Torres-Ferrera, Pablo; Rizzelli, Giuseppe; Mercinelli, Roberto; Ferrero, Valter; Gaudino, Roberto
- Abstract
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 a 29 dB link power budget in a PON environment. We use chromatic dispersion digital pre-compensation (CD-DPC) and a dual-arm in-phase and quadrature Mach–Zehnder modulator (IQ-MZM) at the optical line termination (OLT) side, while preserving DD in the optical network unit (ONU). Three receiver digital-signal-processing (DSP) options are analyzed and compared: square-root-like technique (SQRT) in combination with a feed forward equalizer (FFE) and a decision feedback equalizer (DFE), the Volterra nonlinear equalizer (VNLE), and the SQRT in combination with the VNLE. The SQRT can be applied in combination with the VNLE to decrease the receiver DSP complexity while maintaining the required system performance. We show that PAM-8 with CD-DPC and the SQRT in combination with the VNLE is a feasible solution for 200 Gbps per λ downstream C-band transmission for PON.
- Subjects
DECISION feedback equalizers; PULSE amplitude modulation; OPTICAL dispersion
- Publication
Applied Sciences (2076-3417), 2022, Vol 12, Issue 7, p3538
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app12073538