Deployment analysis of TDM/WDM Single Fiber PON with Colourless ONU Operating at 2.5 Gbps Subcarrier Multiplexed Downstream and 1.25 Gbps Upstream

Fàbrega, Josep M.; Mardini, Ahmad El; Polo, Víctor; Lázaro, José A.; Lopez, E.; Soila, Risto; Prat, Josep

doi:10.1364/nfoec.2010.nwb5

Cited by 3 publications

(10 citation statements)

References 3 publications

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“…The various schemes in which the optical carriers are multiplexed for SCM in RoF are TDM, WDM, OFDM, and OCDMA. In [21], an advanced hybrid SCM-TDM access solution has been demonstrated and experimentally achieved. It is established on the transmission of 2.5 Gbps SCM downstream and 1.25 Gbps upstream using colorless reflective Optical Network Unit (ONU).…”

Section: Optical Multiplexing For Scm In Rofmentioning

confidence: 99%

Radio Subcarrier Spacing Effect on SCM-MDM Using HG Modes in Radio-Over-Fiber

2015

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In this paper, a radio-over-fiber (RoF) design for wireless local area networks (WLANs) on the 5GHz radio frequency band is proposed as an effort to alleviate radio frequency spectrum scarcity and allow frequency re-use. The design incorporates two multiplexing schemes, subcarrier multiplexing (SCM) for increasing the efficiency of radio frequency in the last mile, and MDM for converging several sets of radio subcarriers from different locations into a high-speed optical signal through a single multimode fiber backbone. The effects of different radio channel spacing on the system performance were investigated. A total throughput of 19.5 Gb/s is achieved, 6.5Gb/s per each of the three radio channels.

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Section: Optical Multiplexing For Scm In Rofmentioning

confidence: 99%

Radio Subcarrier Spacing Effect on SCM-MDM Using HG Modes in Radio-Over-Fiber

2015

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“…The design tradeoffs become more evident when considering that the conventional asymmetric SCM system in Fig. 4(b) has a guard band separating the 1.25 Gb/s uplink from the residual 2.5 Gb/s downlink [21]. The out-of-band crosstalk is more easily filtered, giving the greatest resistance to RB but at the high cost of bandwidth efficiency.…”

Section: Operating Zone and Reflection Tolerancementioning

confidence: 99%

“…Several architectural, optical, electrical and signal processing techniques have been proposed to mitigate the impact of RB [16][17][18][19][20]. Interest has also been shown toward using radio frequency (RF) subcarrier multiplexing (SCM) as a simple and low cost means to reduce these effects [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Bandwidth efficient bidirectional 5 Gb/s overlapped-SCM WDM PON with electronic equalization and forward-error correction

Buset¹,

El-Sahn²,

Plant³

2012

Opt. Express

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We demonstrate an improved overlapped-subcarrier multiplexed (O-SCM) WDM PON architecture transmitting over a single feeder using cost sensitive intensity modulation/direct detection transceivers, data re-modulation and simple electronics. Incorporating electronic equalization and Reed-Solomon forward-error correction codes helps to overcome the bandwidth limitation of a remotely seeded reflective semiconductor optical amplifier (RSOA)-based ONU transmitter. The O-SCM architecture yields greater spectral efficiency and higher bit rates than many other SCM techniques while maintaining resilience to upstream impairments. We demonstrate full-duplex 5 Gb/s transmission over 20 km and analyze BER performance as a function of transmitted and received power. The architecture provides flexibility to network operators by relaxing common design constraints and enabling full-duplex operation at BER ∼ 10(-10) over a wide range of OLT launch powers from 3.5 to 8 dBm.

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“…DPSK erasure and orthogonal DPSK/intensity modulation (IM) scheme for virtual private network has also been proposed [110]. In [111], the re-modulation scheme using DPSK modulation format in both downstream and upstream signals for "colourless" dense (DWDM) PONs are proposed and demonstrated.…”

Section: Modulation Format Definitionmentioning

confidence: 99%

“…other. Here, we analyze this SCM-IM modulation format [111][112][113], because it does not require extra optical devices.…”

Section: Modulation Format Definitionmentioning

confidence: 99%

WDM/TDM PON bidirectional networks single-fiber/wavelength RSOA-based ONUs layer 1/2 optimization

López Pastor

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This Thesis proposes the design and the optimization of a hybrid WDM/TDM PON at the L1 (PHY) and L2 (MAC) layers, in terms of minimum deployment cost and enhanced performance for Greenfield NGPON. The particular case of RSOA-based ONUs and ODN using a single-fibre/single-wavelength is deeply analysed. In this WDM/TDM PON relevant parameters are optimized. Special attention has been given at the main noise impairment in this type of networks: the Rayleigh Backscattering effect, which cannot be prevented. To understand its behaviour and mitigate its effects, a novel mathematical model for the Rayleigh Backscattering in burst mode transmission is presented for the first time, and it has been used to optimize the WDM/TDM RSOA based PON. Also, a cost-effective, simple design SCM WDM/TDM PON with rSOA-based ONU, was optimized and implemented. This prototype was successfully tested showing high performance, robustness, versatility and reliability. So, the system is able to give coverage up to 1280 users at 2.5 Gb/s / 1.25 Gb/s downstream/upstream, over 20 Km, and being compatible with the GPON ITU-T recommendation. This precedent has enabled the SARDANA network to extend the design, architecture and capabilities of a WDM/TDM PON for a long reach metro-access network (100 km). A proposal for an agile Transmission Convergence sub-layer is presented as another relevant contribution of this work. It is based on the optimization of the standards GPON and XG-PON (for compatibility), but applied to a long reach metro-access TDM/WDM PON rSOA-based network with higher client count. Finally, a proposal of physical implementation for the SARDANA layer 2 and possible configurations for SARDANA internetworking, with the metro network and core transport network, are presented.

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Deployment analysis of TDM/WDM Single Fiber PON with Colourless ONU Operating at 2.5 Gbps Subcarrier Multiplexed Downstream and 1.25 Gbps Upstream

Abstract: A single-fiber full-duplex hybrid TDM/WDM-PON is demonstrated to operate at 2.5/1.25 Gbps rates, with RSOA ONU. It achieves high power budget (GPON compliant) at a distances higher than 20km, and serves up to 1280 users.

Cited by 3 publications

References 3 publications

Radio Subcarrier Spacing Effect on SCM-MDM Using HG Modes in Radio-Over-Fiber

Radio Subcarrier Spacing Effect on SCM-MDM Using HG Modes in Radio-Over-Fiber

Bandwidth efficient bidirectional 5 Gb/s overlapped-SCM WDM PON with electronic equalization and forward-error correction

WDM/TDM PON bidirectional networks single-fiber/wavelength RSOA-based ONUs layer 1/2 optimization

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