10 Gb/s bidirectional transmission in a 116 km reach hybrid DWDM-TDM PON

MacHale, E. K.; Talli, Giuseppe; Townsend, Paul D.

doi:10.1109/ofc.2006.215957

Cited by 16 publications

(5 citation statements)

References 3 publications

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“…No post-distortion or additional post-processing technique was applied to the received signal. The ODN employed a dual-feeder fiber link with 25.4 km of standard single mode fiber for the mitigation of Rayleigh back scattering (RB) stemming from the DS [21], and a drop fiber of 600 m length. The PON's wavelength distributing element was emulated with a 1 nm OBF.…”

Section: Principle Of Wavelength Reuse and Proposed Onumentioning

confidence: 99%

Full-Duplex 4-PAM Transmission for Capacity Upgrade in Loop-Back PONs

Lazarou

Dris

Bakopoulos

et al. 2013

IEEE Photon. Technol. Lett.

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We report for the first time on the feasibility of quaternary (4-ary) pulse amplitude modulation (4-PAM) for both downstream (DS) and upstream (US) directions in a fullduplex passive optical network (PON) with wavelength reuse. The scheme is validated with a simple, low-cost, and colorless optical network unit (ONU) exploiting the all-optical carrier recovery scheme. The ONU employs a high-finesse optical filter with periodic frequency response for carrier extraction and data erasure of the DS signal. A cascade of two semiconductor optical amplifiers (SOAs) amplifies and modulates the recovered carrier with the 4-PAM US data-stream. The proposed scheme constitutes a migration scenario towards low-cost TDM/WDM PONs with currently deployed hardware equipment, ensuring full-duplex transmission up to 26 km, with higher spectral efficiencies and auspicious wavelength allocation.Index Terms-4-PAM, All-Optical carrier recovery, fiber to the Home (FTTH), optical access networks, optical network unit (ONU), wavelength reuse, WDM PON.

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Section: Principle Of Wavelength Reuse and Proposed Onumentioning

confidence: 99%

Full-Duplex 4-PAM Transmission for Capacity Upgrade in Loop-Back PONs

Lazarou

Dris

Bakopoulos

et al. 2013

IEEE Photon. Technol. Lett.

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“…Simulations were made considering a TDM-EPON with 16 ONUs and one user connected to each ONU using OPNET Modeler 14 [23]. The transmission rate of the upstream link between ONUs and the OLT is set to 1 Gbit/s and the access link from the user to each ONU to 100 Mbit/s [1--7, 12--13].…”

Section: Simulation Scenariomentioning

confidence: 99%

“…In this way, Shea et al [15] have demonstrated long-reach PONs able to operate at 10 Gbit/s over distances up to 110 km using a lower number of EDFA amplifiers in the backhaul section. Machale et al [16] proposed hybrid architectures based on DWDM-TDM PON able to transmit over 10 Gbit/s and 116 km. Besides, Prince et al [17] expanded the experimental distance up 118 km of fiber.…”

Section: Introductionmentioning

confidence: 99%

A bandwidth assignment polling algorithm to enhance the efficiency in QoS long‐reach EPONs

Merayo

Jiménez

Fernández

et al. 2010

Trans Emerging Tel Tech

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A novel polling algorithm is proposed to provide subscriber differentiation at the upstream channel in long-reach EPONs. As operators and service providers prefer to operate at loads with no congestion and losses, the developed algorithm has been designed to improve the efficiency for those loads at which the network is likely to work. This new scheme permits to anticipate the transmission of some packets in order to take advantage of the wasted bandwidth between consecutive transmissions of ONUs. As a result, not only does this algorithm behave alike other polling algorithms for high loads, but it also improves the efficiency at low and medium loads, leading to a reduction in the mean packet delay. The new algorithm has been tested in different scenarios, motivated by the increasing interest in enlarging the long-reach EPON distances. Simulation results show that as the distance increases, the algorithm achieves a significant reduction of the mean packet delay for an extended range of loads.

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“…This characteristic, together with advances in Wavelength Division Multiplexing (WDM) allow an increment in the potential number of users in the access network. In these WDM architectures, a number of powered Long-Reach PONs-each one with a specific wavelength assigned for the upstream transmission-are combined using WDM multiplexers [4][5][6], and they are treated as independent Long-Reach PONs in terms of access level. Hence, Long-Reach PONs are Point-to-MultiPoint (P2MP) high capacity access networks based on a tree topology between the Optical Line Terminal (OLT) and the Optical Network Units (ONUs).…”

Section: Introductionmentioning

confidence: 99%

Adaptive polling algorithm to provide subscriber and service differentiation in a Long-Reach EPON

Merayo

Jiménez²,

Durán

et al. 2009

Photon Netw Commun

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A novel interleaved polling algorithm for LongReach EPONs is proposed in order to simultaneously provide subscriber and class of service differentiation. It is demonstrated that the new polling algorithm applied to a typical 100 km Long-Reach EPON performs better than centralized methods, where bandwidth prediction is needed to overcome the higher round trip time in which ONUs cannot transmit. As polling methods in Long-Reach EPONs do not require prediction, they are much simpler and show less computational complexity than centralized schemes, avoiding the inaccuracy of bandwidth prediction. Simulation results show that the new algorithm increases the achieved throughput when compared to centralized algorithms with traffic prediction, obtaining a significant reduction of both mean packet delay and packet loss ratio for the highest priority service level profiles.Keywords Long-Reach · Passive optical network (PON) · Dynamic bandwidth allocation (DBA) · Service level agreement (SLA) · Class of service (CoS) · Ethernet

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10 Gb/s bidirectional transmission in a 116 km reach hybrid DWDM-TDM PON

Cited by 16 publications

References 3 publications

Full-Duplex 4-PAM Transmission for Capacity Upgrade in Loop-Back PONs

Full-Duplex 4-PAM Transmission for Capacity Upgrade in Loop-Back PONs

A bandwidth assignment polling algorithm to enhance the efficiency in QoS long‐reach EPONs

Adaptive polling algorithm to provide subscriber and service differentiation in a Long-Reach EPON

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