Flexible TWDM PON with WDM overlay for converged services

Cheng, Ning

doi:10.1016/j.yofte.2015.07.006

Cited by 35 publications

(6 citation statements)

References 33 publications

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“…However, this existing transmission capacity is deemed not sufficient to support future network requests due to the dawn of Internet of Things, big data, unceasing increment of video bit rate, cloud gaming and other bandwidth demanding services. Numerous research has been proposed to evolve the PON system capacity beyond 10 Gb/s [12], [13], [14], [15], [16]. The first logical step is to increase the bit rate capacity; however, although 40 Gb/s PON systems have been proposed [12], bringing the transmission bit rate beyond 10 Gb/s is challenging when considering the fiber dispersion penalty and the expensive components involved [13].…”

Section: Passive Optical Networkmentioning

confidence: 99%

“…Numerous research has been proposed to evolve the PON system capacity beyond 10 Gb/s [12], [13], [14], [15], [16]. The first logical step is to increase the bit rate capacity; however, although 40 Gb/s PON systems have been proposed [12], bringing the transmission bit rate beyond 10 Gb/s is challenging when considering the fiber dispersion penalty and the expensive components involved [13]. The orthogonal frequency-division multiplexed (OFDM)based PON [14] and wavelength division multiplexing (WDM)-PON [15] have been proposed to provide virtually independent point-to-point transmission channel for each ONU.…”

Section: Passive Optical Networkmentioning

confidence: 99%

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Flexible Access Network Multi-Tenancy Using NFV/SDN in TWDM-PON

Pakpahan

Hwang

2023

IEEE Access

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Over the past decade, network operators worldwide have regarded passive optical networks (PONs) as a successful access network system and the preferred technology for fiber-to-thehome/building/curb/distribution-point (FTTx) architecture. However, implementing the state-of-the-art PONs requires a high initial capital expenditure (CapEx) to deploy fiber in the field and acquires the necessary active devices. Thus, new architectures need to be developed to share the physical architecture and enable the multi-tenancy capability in a flexible way to satisfy different requirements from the operators and users. This research proposes to integrate the next-generation TWDM-PON with software-defined network (SDN) and the network function virtualization (NFV) to provide highly enhanced form of virtual unbundling of broadband access networks, enabling cost sharing and the dynamics of a competitive landscape. The simulation results show that the proposed architecture and mechanism can provide better performance in multi-tenancy condition, while guaranteeing the quality-of-service requirements in terms of the mean packet delay, jitter, throughput, and packet loss ratio. INDEX TERMSMulti-tenancy, open access network, software defined network, network functions virtualization, TWDM-PON.

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Section: Passive Optical Networkmentioning

confidence: 99%

Section: Passive Optical Networkmentioning

confidence: 99%

Flexible Access Network Multi-Tenancy Using NFV/SDN in TWDM-PON

Pakpahan

Hwang

2023

IEEE Access

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“…At the receiver side, second interleaver combines the wavelengths coming from splitter and AWG. Hence in this architecture, each OLT transmitter can be used for one to one service, one to many services or many to many services according to the traffic load [20,21].…”

Section: Previous Related Workmentioning

confidence: 99%

Adaptive bandwidth mechanism using dual rate OLT for energy efficient WDM–TDM passive optical network

Garg

Janyani

2017

Telecommun Syst

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This paper reviews various energy efficient approaches in existence and proposes a Hybrid WDM-TDM PON architecture that allows the adaptive bandwidth allocation mechanism to reduce central office power consumption with acceptable performance. Our proposed architecture allows sending two signals, one broadband and other narrowband to each optical networking unit so an appropriate signal can be utilized according to the traffic demand. In case of very low traffic, only narrowband signal is used and a significant amount of energy consumption and OPEX is reduced. By using 2 × N power splitter and interleaver, proposed architecture provides broadcasting at both broadband and narrowband signal depending on the required link rate. This further reduces energy consumption and OPEX by avoiding the transmission of same signal from multiple sources. Offered data rates to the optical distribution networks (ODNs) may also be varied by doubling the wavelength spacing of remote node AWG so that two contiguous wavelengths can be transmitted at each port or ODN. This provides the geographical dynamic bandwidth allocation. Proposed architecture also support simultaneous transmission of both broadband and narrowband signals to the ODN to provide bandwidth scalability and network extensibility for supporting future access network in terms of new users and data rates. As two signals are reaching to any ODN, resiliency against OLT TRx and line card failure is also achieved. The performance of the proposed design is verified by simulation results in terms of bit error rate and receiver sensitivity to demonstrate its feasibility for the next-generation optical access network.

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“…Thus, we could utilize the TWDM-PON to temporarily replace WDM-PON. And the TWDM-PON was chosen by the FSAN community in 2012 as a principal solution to NG-PON2 to support 40 Gbit/s downstream and 10 Gbit/s upstream traffic [10,11].…”

Section: Introductionmentioning

confidence: 99%

Fiber- and FSO-Protected Connections for Long-Reach TWDM Access Architecture With Fault Protection

et al. 2020

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In this paper, we propose a long-reach starring based time-and wavelength-divisionmultiplexing passive optical network (TWDM-PON) by using fiber-and free space optical (FSO)-protected architecture against fiber breakpoint. Here, the new fiber-based and FSO-based optical network unit (ONU) modules are designed in the PON system to achieve the self-protected operation. Thus, the adjacent ONU is linked to produce the fiber-or FSO-based reconnections. Thus, 410 Gbit/s downstream and 10 Gbit/s upstream signals can be reached through 70 km fiber transmission and a length of free space link without signal amplification and dispersion compensation. Moreover, the relationships of splitter ratio and FSO link length in the proposed TWDM access network are also analyzed and discussed.

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Flexible TWDM PON with WDM overlay for converged services

Cited by 35 publications

References 33 publications

Flexible Access Network Multi-Tenancy Using NFV/SDN in TWDM-PON

Flexible Access Network Multi-Tenancy Using NFV/SDN in TWDM-PON

Adaptive bandwidth mechanism using dual rate OLT for energy efficient WDM–TDM passive optical network

Fiber- and FSO-Protected Connections for Long-Reach TWDM Access Architecture With Fault Protection

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