A simple WDM-PON supporting LAN services by spectrum-sliced technology

Feng, Chen; Gan, Chaoqin; Ma, Shucong; Gao, Ziyue

doi:10.1007/s11107-016-0681-9

Cited by 9 publications

(8 citation statements)

References 7 publications

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“…The comparison results are shown in Table 3. Then, the proposed system will be more flexible than Zhou et al, 8 Deng et al, 9 Feng et al, 10 and Li et al 12 in resource allocation. Firstly, compared with Zhou et al, 8 Deng et al, 9 and Feng 12 But, the value of m in practical development will be limited by the gain of EDFA, the transmitting power of transmitter, and so on.…”

Section: Performance Comparisonsmentioning

confidence: 95%

“…Finally, we add a DBA algorithm by using tunable receivers in ONUs to improve the utilization of bandwidth based on the mutual connection between ONUs. Then, the proposed system will be more flexible than Zhou et al, 8 Deng et al, 9 Feng et al, 10 and Li et al 12 in resource allocation. In short, the proposed architecture performs better than the previous architectures in reliability, scalability, and the utilization of bandwidth.…”

Section: Performance Comparisonsmentioning

confidence: 95%

“…b http://china.makepolo.com/product-detail/100951400797.html.et al,10 our scheme can not only realize feeder fiber fault protection but also support distribution fiber fault protection. b http://china.makepolo.com/product-detail/100951400797.html.et al,10 our scheme can not only realize feeder fiber fault protection but also support distribution fiber fault protection.…”

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confidence: 97%

“…Cost of optical components and devices al,10 our scheme can not only realize feeder fiber fault protection but also support distribution fiber fault protection. It means that the reliability of proposed architecture has been greatly improved when feeder and distribution fiber faults occur simultaneously.…”

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confidence: 98%

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Group protection and LAN service scheme utilizing flexible modularization and high efficiency for metro‐access network

Chen

Gan

et al. 2018

Int J Communication

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In this paper, a reliable scheme based on star topology is proposed by introducing group protection. Depending on interconnecting fibers, all optical network units (ONUs) are divided into some groups and each group contains 2 ONUs.Through these groups, the network can not only realize efficient transmission of local area network service between adjacent ONUs but also provide mutual protection for ONUs in a group when distribution fibers happen to faults. By using the backup pathway, the network can further provide protections for feeder fibers when they fall in faults. With the help of the optical tunable receiver in ONU, dynamic bandwidth allocation algorithm is also supported to realize flexible bandwidth allocation in 1 group. By the subtly design, the network can realize passivity (there are no active devices in remote nodes), modularization, and scalability. By utilizing amplitude modulation, differential phase shift keying modulation and reflective semiconductor optical amplifier technology, wavelength triple reuse is also achieved. Finally, the results of simulation and performance analysis demonstrate the feasibility of the architecture.KEYWORDS group protection, high reliability, LAN, metro-access network, modularization | INTRODUCTIONWith the rapid development of real-time services, such as teleconference, telemedicine, and online education, the more efficient way of communication needs to be considered, especially for the future optical network. 1 However, direct communication among optical network units (ONUs) is not supported in the traditional optical networks. The communication information needs to be firstly transmitted to the optical line terminal (OLT) and then transmitted to the destination ONUs. This will cause some problems, for example, raising the burden of OLT and even resulting in the information congestions, taking up the bandwidth of up and downstream signals, increasing transmission delay, and so on. To solve these problems, the solutions supporting direct communications among ONUs have been proposed. 2 Meanwhile, optical metro-access network can integrate traditional metro and access layers into metro-access layer, which will meet the flattening development trend of future optical network. 3 In a short, it is becoming increasingly important to support direct communication among ONUs for metro-access network.In the support of services, the schemes supporting local area network (LAN) service can be classified into 5 categories in general: additional transceiver, utilizing upstream signals, broadcasting, virtual ring, and ONU ring. Garg et al transmit and receive LAN service together with downstream and upstream services by placing a transceiver in OLT or remote node (RN). 4 The LAN signals will be transmitted to OLT or RN from initiative ONU and next to destination ONU. Wu et al transmit LAN service through orthogonal modulation technology. 5 By utilizing the light source of upstream signals, the LAN signals are produced. Garg et al broadcast the LAN signals to all output ports of a 8 ×...

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Section: Performance Comparisonsmentioning

confidence: 95%

Section: Performance Comparisonsmentioning

confidence: 95%

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confidence: 97%

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confidence: 98%

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Group protection and LAN service scheme utilizing flexible modularization and high efficiency for metro‐access network

Chen

Gan

et al. 2018

Int J Communication

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“…Similarly, Deng et al design an optical VPN circulator device (OVCD) to support direct communication of ONUs in intra and inter‐PON . By means of wavelength routing property of AWG, Feng et al utilize the AWG in RN to support the direct communication of ONUs . For ONU ring, Monoyios et al connect all ONUs into a real ring to support direct communication of ONUs .…”

Section: Introductionmentioning

confidence: 99%

High‐reliability grid architecture supporting discretionary and efficient communication between ONUs in metro‐access optical network

Shao

Zhao

Chen

et al. 2019

Int J Communication

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Direct communication of optical network units (ONUs) is an important function in metro-access optical network. In this paper, a grid architecture supporting discretionary and efficient communication between ONUs is proposed. The grid architecture is built by using two interconnecting fibers to connect every two ONUs; this can give protection to every ONU by four ONUs.Additionally, the network reliability can be improved greatly. Grid topology of ONUs leads to their discretionary direct communication. In this topology, direct communication signal can be transmitted from one ONU to another ONU directly, rather than being returned to remote node central office. Also, the efficiency of direct communication can be improved remarkably with the proposed architecture. Finally, the performance analyses and the simulation results verify the feasibility of the proposed architecture. When the n reaches to 10, the reliability of downstream and direct communication signals is all larger than 99.993%.

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A novel WDM-MAN enabling cross-regional reconfiguration and comprehensive protection based on tangent-ring

Gan

Gou

et al. 2019

Optics Communications

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A simple WDM-PON supporting LAN services by spectrum-sliced technology

Cited by 9 publications

References 7 publications

Group protection and LAN service scheme utilizing flexible modularization and high efficiency for metro‐access network

Group protection and LAN service scheme utilizing flexible modularization and high efficiency for metro‐access network

High‐reliability grid architecture supporting discretionary and efficient communication between ONUs in metro‐access optical network

A novel WDM-MAN enabling cross-regional reconfiguration and comprehensive protection based on tangent-ring

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