Optical access beyond 10 Gb/s PON

Iannone, P.P.; Reichmann, K.C.

doi:10.1109/ecoc.2010.5621269

Cited by 22 publications

(12 citation statements)

References 24 publications

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“…In fact, coherent long-haul systems have already been commercially released. Some years ago the exploitation of coherent demodulation has been proposed, even for last-mile networks with the prospective of using the tunable local oscillator as the basis principle of a tunable colorless receiver [27]. However, in the last years coherent systems have not been considered as a good option for access networks because of the high cost required by their components.…”

Section: Coherent Demodulationmentioning

confidence: 99%

A TWDM-PON with Advanced Modulation Techniques and a Multi-Pump Raman Amplifier for Cost-Effective Migration to Future UDWDM-PONs

Muciaccia

Gargano

Passaro

2015

J. Lightwave Technol.

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Abstract-Dense wavelength-division multiplexing passive optical networks (DWDM-PONs) and ultra-dense wavelengthdivision multiplexing passive optical networks (UDWDM-PONs) are strong candidates to future next-generation passive optical network stage 3 (NGPON3) access networks in order to satisfy increasing bandwidth demand, but their deployment is still a great challenge for telecommunication operators. PON (WDM-PON). In order to fulfill this aim, with reference to downstream traffic enhancement, two main novelties are presented: (a) the use of a multi-pump Raman amplifier (MRA) to satisfy the future necessity of large gain bandwidth; (b) the introduction of advanced modulation techniques to increase spectral efficiency and the future number of user channels (a less than -wide channel bandwidth providing / bitrate has been demonstrated). A coherent system has been also proposed and its main impairments have been evaluated. The MRA has been accurately optimized to minimize power consumption without compromising performances. In the upstream direction, a semiconductor optical amplifier (SOA) has been considered. The performances of the proposed TWDM-PON have been predicted through numerical simulations based on a system-level commercial CAD software. Time and wavelength division multiplexed PON (TWDM-PON) has already been chosen by ITU-T as one of the best architectures in brownfield contexts to allow the reuse of the optical distribution network (ODN). Our proposal exploits the advantages of TWDM in order to reach a balance between coexistence with legacy systems and gradual and cost-effective migration towards pure wavelength division multiplexed Index Terms -optical access networks, FTTH, NGPON3, TWDM-PON, Raman amplifier, SOA.

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Section: Coherent Demodulationmentioning

confidence: 99%

A TWDM-PON with Advanced Modulation Techniques and a Multi-Pump Raman Amplifier for Cost-Effective Migration to Future UDWDM-PONs

Muciaccia

Gargano

Passaro

2015

J. Lightwave Technol.

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“…Passive optical network (PON) is likely to emerge as a last mile promising solution for high speed long reach broadband access networks due to its various advantages like enhanced security, better transparency and less cost (Koonen 2008;Cvijetic et al 2010;Iannone and Reichmann 2010). In the implementation of high speed access networks like 40 Gbps, 100 Gbps or more, chromatic dispersion (CD) and polarization mode dispersion (PMD) are becoming as a limiting factor and restricts the maximum achievable transmission distance (Qian et al 2011).…”

Section: Introductionmentioning

confidence: 99%

100 Gbps long reach coherent PON downstream transmission using dual polarization-QPSK with digital signal processing

Pandey

Goel

2015

Opt Quant Electron

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This paper demonstrates 100 Gbps long reach coherent passive optical network (CPON) downstream transmission on a single wavelength over 100 km with 1:128 power split having acceptable performance. Here dual polarization-quadrature phase shift keying modulation format is utilized for transmission in the central office and digital signal processing (DSP) is utilized at the optical network unit (ONU) to compensate the linear impairments generated due to high speed optical signal transmission over standard single mode fiber. At the receiving end (ONU), homodyne coherent detection is utilized. The DSP is done using MATLAB and executes five functions that are analog to digital conversion, chromatic dispersion compensation, polarization demultiplexing, carrier phase estimation and digital to analog conversion. The results of proposed architecture are verified in terms of constellation diagrams and receiver sensitivity. The simulated results indicate that our proposed 100 Gbps long reach CPON downstream transmission is feasible and may be implemented in next generation high speed PONs.Keywords Coherent passive optical network (CPON) Á Dual polarization-quadrature phase shift keying (DP-QPSK) Á Digital signal processing (DSP) Á Central office (CO) Á Optical network unit (ONU)

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“…Passive optical network (PON) is a promising solution to satisfy the exponentially growing demand of emerging high-bandwidth services [1][2][3]. Orthogonal frequency division multiple access-PON (OFDMA-PON) has been proposed as an attractive candidate for next-generation PON due to its high spectral efficiency, dynamic bandwidth allocation, and robust dispersion tolerance [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Power margin improvement for OFDMA-PON using hierarchical modulation

Cao¹,

Hu²,

Zhuang³

et al. 2013

Opt. Express

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We propose and experimentally demonstrate a hierarchical modulation scheme to improve power margin for orthogonal frequency division multiple access-passive optical networks (OFDMA-PONs). In a PON system, under the same launched optical power, optical network units (ONUs) have different power margins due to unequal distribution fiber lengths. The power margin of the PON system is determined by the ONU with the lowest power margin. In our proposed scheme, ONUs with long and short distribution fibers are grouped together, and downstream signals for the paired ONUs are mapped onto the same OFDM subcarriers using hierarchical modulation. In a pair of ONUs, part of the power margin of the ONU with short distribution fiber is re-allocated to the ONU with long distribution fiber. Therefore, the power margin of the ONU with the longest distribution fiber can be increased, leading to the power margin improvement of the PON system. Experimental results show that the hierarchical modulation scheme improves the power margin by 2.7 dB for an OFDMA-PON system, which can be used to support more users or extend transmission distance.

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Optical access beyond 10 Gb/s PON

Abstract: Innovation in optical access network architectures has always been tightly coupled to innovation in enabling components and subsystems. We explore some of the candidate architectures for next-generation optical access with an emphasis on enabling technologies.

Cited by 22 publications

References 24 publications

A TWDM-PON with Advanced Modulation Techniques and a Multi-Pump Raman Amplifier for Cost-Effective Migration to Future UDWDM-PONs

A TWDM-PON with Advanced Modulation Techniques and a Multi-Pump Raman Amplifier for Cost-Effective Migration to Future UDWDM-PONs

100 Gbps long reach coherent PON downstream transmission using dual polarization-QPSK with digital signal processing

Power margin improvement for OFDMA-PON using hierarchical modulation

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