Colourless ONU modules in TDM-PON and WDM-PON architectures optical carrier remote modulation

Genay, N.; Chanciou, P.; Brenot, R.; Moignard, Maryse; Payoux, F.

doi:10.1049/cp:20050417

Cited by 6 publications

(4 citation statements)

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“…The only major EAM drawback is the intrinsic optical loss of the device or, in other words, the lack of gain that will limit the transmission reach. A possible solution to this is to use an amplifier, such a SOA, together with the EAM, to boost the power and therefore increase the reach 26,27 . Nevertheless the most elegant, space saving solution is to utilise an integrated SOA-EAM device 10, [28][29][30] .…”

Section: The Optical Network Unitmentioning

confidence: 99%

Reflective based active semiconductor components for next generation optical access networks

Borghesani¹

2010

36th European Conference and Exhibition on Optical Communication

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Section: The Optical Network Unitmentioning

confidence: 99%

Reflective based active semiconductor components for next generation optical access networks

Borghesani¹

2010

36th European Conference and Exhibition on Optical Communication

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“…To practically deploy WDM-PONs, the main challenges are cost-effectiveness and colorlessness of optical network units (ONUs). To address such challenges, several techniques have been proposed, which include, for example, spectrum-slicing of super luminescent diodes (SLDs) or optical amplifiers [3,4], wavelength tunable lasers in ONUs [5,6] and remote modulation of reflective intensity modulators [7,8]. Among all these proposed techniques, reflective intensity modulation-based ONUs are very attractive for WDM-PONs since the implementation of a centrally-controlled dynamic wavelength management in an optical line terminal (OLT) allows the reflected upstream signal transmission from the ONU in a wavelength agnostic manner.…”

Section: Introductionmentioning

confidence: 99%

REAM intensity modulator-enabled 10Gb/s colorless upstream transmission of real-time optical OFDM signals in a single-fiber-based bidirectional PON architecture

Hugues-Salas¹,

Giddings²,

Jin³

et al. 2012

Opt. Express

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Abstract:Reflective electro-absorption modulation-intensity modulators (REAM-IMs) are utilized, for the first time, to experimentally demonstrate colorless ONUs in single-fiber-based, bidirectional, intensity-modulation and direct-detection (IMDD), optical OFDM PONs (OOFDM-PONs) incorporating 25km SSMFs and OLT-side-seeded CW optical signals. The colorlessness of the REAM-IMs is characterized, based on which optimum REAM-IM operating conditions are identified. In the aforementioned PON architecture, 10Gb/s colorless upstream transmissions of end-to-end realtime OOFDM signals are successfully achieved for various wavelengths within the entire C-band. Over such a wavelength window, corresponding minimum received optical powers at the FEC limit vary in a range as small as <0.5dB. In addition, experimental measurements also indicate that Rayleigh backscattering imposes a 2.8dB optical power penalty on the 10Gb/s over 25km upstream OOFDM signal transmission. Furthermore, making use of on-line adaptive bit and power loading, a linear trade-off between aggregated signal line rate and optical power budget is observed, which shows that, for the present PON system, a 10% reduction in signal line rate can improve the optical power budget by 2.6dB.

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“…However, existing Wavelength Division Multiplexing Passive Optical Network (WDM-PON) [8] [9] architectures require expensive wavelength specified optical sources in ONUs so that it hasn't been largely deployed. As for the existing Time Division Multiplexing Passive Optical Network (TDM-PON) [10] [11] , the traffic loads from different ONUs must be upstream-transmitted in one wavelength channel with a Time Division Multiple Access (TDMA) scheme and the upstream wavelength per ONU is fixed. Due to high traffic burstiness and unbalanced traffic pattern in distributed computing applications, the utilization of wavelength becomes poor and transfer latency is very large with the above two PON architectures.…”

Section: Introductionmentioning

confidence: 99%

Demonstration of time-wavelength co-allocation (TWCA) problem in novel dynamic wavelength scheduled WDM-PON for distributed computing applications

et al. 2008

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International audienceThis paper studies the problem of the implementation of distributed computing applications in local area networks. We propose a novel Dynamical Wavelength Scheduled Wavelength Division Multiplexing Passive Optical Network (WDM-PON) architecture, in which the number of the available upstream wavelength channels is greatly less than that of optical network units (ONU). And we experimentally demonstrate the feasibility of the proposed WDM-PON, which enables dynamically scheduling upstream data in the time division multiplexing (TDM) and WDM scheme from ONU to optical line terminal (OLT). The Time-Wavelength Co-Allocation (TWCA) Problem is defined in the proposed WDM-PON architecture to aggregate large files for distributed computing applications and three scheduling algorithms are presented to solve this problem. The significant improvement compared with the conventional TDM-over-WDM PON is illustrated through simulations

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Colourless ONU modules in TDM-PON and WDM-PON architectures optical carrier remote modulation

Cited by 6 publications

References 0 publications

Reflective based active semiconductor components for next generation optical access networks

Reflective based active semiconductor components for next generation optical access networks

REAM intensity modulator-enabled 10Gb/s colorless upstream transmission of real-time optical OFDM signals in a single-fiber-based bidirectional PON architecture

Demonstration of time-wavelength co-allocation (TWCA) problem in novel dynamic wavelength scheduled WDM-PON for distributed computing applications

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