Flexible and adaptive coherent PON for next-generation optical access network [Invited]

WITHDRAWN: A novel hybrid MDM NGPON based wavelength coding enhancemente mploying probabilistically shaped quadrature

“…Besides this, the system throughput upto 800Gbps for uplink and 700Gbps for downlink can also be obtained successfully. Finally, it is shown that proposed work shows superiority over other existing systems.Keywords: passive optical network (PON); coherent-next generation passive optical network (C-NGPON); probabilistic shaping quadrature amplitude modulation (PS-QAM); time and wavelength division multiplexing (TWDM); mode division multiplexing (MDM) be yet more for next-generation based six generation (6G) systems with higher bandwidth in radio frequency if considering millimetre-wave frequencies by 2030 (Sasai et al 2020;Zhang et al 2023).Again, the rising requirements for bandwidth are one such significant factor compelling the emergence of high bandwidth PON. Current PON networks are all relying on direct and intensity modulation; unluckily the sensitivity of single-wavelength direct and intensity modulation (DD/IM) PON is roughly reaching its threshold at 50Gbps deliberating the necessary power budget.…”

“…To address this issue based on either adaptive modulation or adaptive coding in IM/DD PON or C-PON. The adaptable C-PON can provide greater optimized capacity with a larger power budget and dynamic range (Mallick et al 2022;Zhang et al 2023).Recently, various C-PON systems have attracted keen interest as it carries the benefits of flexibility, high capacity, and cost-effectiveness. Costa C et al proposed a dual-polarization 16-ary quadrature amplitude modulation (DP-16QAM) C-PON using 4D clustering over a 151.6km transmission distance at 100Gbps data rate (Costa et al 2023).Jung SM et al demonstrated wavelength-reused full-duplex reflective C-PON over a 73km distance at a 12Gbps transmission rate(Jung et al 2018).Kodama T et al introduced a C-PON system having Iand Q-axis mapping for distinct ONUs over 57km transmission distance at 10Gbps data rate(Kodama and Arai 2021).Ju C et al proposed an effective adaptive equalization design for C-PON over 20km single mode fiber (SMF) at 100Gbps data rate successfully (Ju et al 2020).Further, to enhance the optical signal-to-noise ratio (OSNR) tolerance, a probabilistic shaping QAM (PS-QAM) has aroused a lot of interest.…”

Wavelength complement coding based a smooth hybrid MDM/C-NGPON evolution employing PS-512QAM modulation

“…Several significant applications, from household to business services and mobile X-haul, are conceived to require totalled access to high bandwidth to 200G. It can be yet more for next-generation based six generation (6G) systems with higher bandwidth in radio frequency if considering millimetre-wave frequencies by 2030 (Sasai et al 2020;Zhang et al 2023).…”

“…Moreover, the benefit of superb receiver sensitivity, C-PON too has the advantages of high speed obtained by employing modulation formats as well as digital dispersion consideration and equalization enabled through the digital signal processing, because of the optical domain linear conversion to the digital field. Mature optoelectronics components and C-band wavelength facilities can be utilized without holding wavelength in the formerly crowded O-band window (Sasai et al 2020;Zhang et al 2023). Thus, C-PON can comfortably collocate with the legacy PON system in PON in the same remote network.…”

“…To address this issue based on either adaptive modulation or adaptive coding in IM/DD PON or C-PON. The adaptable C-PON can provide greater optimized capacity with a larger power budget and dynamic range (Mallick et al 2022;Zhang et al 2023).…”