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- Title
A smooth evolution of wavelength complement coding integrated MDM/coherent NGPON incorporating probabilistically shaped-512 QAM.
- Authors
Kumari, Meet; Arya, Vivek
- Abstract
Next generation passive optical networks (NGPONs) are progressing towards future generation optical access network solutions providing eminent bandwidth per user. The main drawback of NGPON based coexisting optical network is that multiple wavelength produces crosstalk as well as not all wavelengths are utilized. The proposed wavelength complements coding based NGPONs use multiple wavelengths to persist sum amplitude to eradicate the amplitude fluctuation convinced crosstalk to legacy NGPON signals. It also leads to no retrofitting as well as no code efficiency. A smooth 16 × 100Gbps hybrid mode division multiplexing and coherent-NGPON (C-NGPON) evolution on the basics of wavelength complement coding is designed and investigated. C-NGPON helps to reduces computational complexity and power consumption constraints. Also, probabilistically shaped quadrature amplitude modulation (PS-QAM) modulation is realized in C-NGPON as a key solution to embrace state-of-the-art coherent transponders. Obtained simulation results indicate that the designed integrated MDM/C-NGPON system can sustains higher 256/512 split ratio in downlink/uplink transmission in contrast the conventional passive optical networks (PONs). Moreover, for legacy PON wavelength coexistence with old as well as PON complement wavelengths, − 19 dBm received power in uplink as well as − 9 dBm in downlink can be attained. A high 20 dB optical to signal noise ratio is attained for PS 512-QAM than uniform-shaped 128 QAM providing low power penalty of 0.5 dB under 0.857 normalized generalized mutual information threshold. Additionally, the design offers a long-haul 250 km range considering 4.8 shaping factor. Eventually, it is depicted that this work realizes superiority over surviving designs with high throughput of 800 Gbps.
- Subjects
PASSIVE optical networks; QUADRATURE amplitude modulation; SIGNAL-to-noise ratio; WAVELENGTHS; WAVELENGTH division multiplexing
- Publication
Optical & Quantum Electronics, 2024, Vol 56, Issue 1, p1
- ISSN
0306-8919
- Publication type
Article
- DOI
10.1007/s11082-023-05680-1