In-service upgrade of an amplified 130-km metro CWDM transmission system using a single LOA with 140-nm bandwidth

Iannone, P.P.; Reichmann, K.C.; Spiekman, L.H.

doi:10.1109/ofc.2003.315968

Cited by 20 publications

(8 citation statements)

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“…Although new amplification technologies, such as Raman [1] and semiconductor optical amplifiers [2] can provide remarkable performances in terms of gain bandwidth and flexibility, standard EDFAs are still the most attractive solution as the best trade-off between cost end performances. When EDFAs are used in add/drop networks, or in presence of traffic bursts, signal power transients due to the variable input signal load, can cause serious performance degradation, therefore gain control techniques must be used.…”

Section: Introductionmentioning

confidence: 99%

Transient Control by Free Ase Light Re-Circulation in EDFA Based WDM Ring Networks

Sacchi

Sugliani

Bogoni

et al. 2005

Optical Networks and Technologies

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Section: Introductionmentioning

confidence: 99%

Transient Control by Free Ase Light Re-Circulation in EDFA Based WDM Ring Networks

Sacchi

Sugliani

Bogoni

et al. 2005

Optical Networks and Technologies

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“…Repeatered transmission is one of the challenging issues in CWDM due to the broad bandwidth of up to 340nm across all 18 channels. There has been some work addressing the problem of designing broadband yet low-cost amplifiers [5]. In our paper, we are not considering amplification to increase channel power and reach thus limiting us to single spans of 70-80 km reach.…”

Section: Introductionmentioning

confidence: 99%

WDM transmission upgrade using low-cost uncooled components

Thiele

Winzer

2005

SPIE Proceedings

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Cost-effective short-haul but high-capacity optical transport systems are becoming increasingly important for metropolitan-area and access applications; examples are metro-feeders, inter-or intra-office links between routers and cross-connects, and storage-area networks. Transmission links of this kind are characterized by distances of 10 to 100 km and typically use directly modulated lasers providing a high output power at a low device cost. Due to the inherent wavelength drift of uncooled system components, full spectrum CWDM is defined for up to 16 or 18 channels on a coarse 20-nm wavelength grid between 1270 and 1610 nm. To meet the demand for the increase of transmission capacity in the metro and access domain, there are several potential strategies to remove the capacity limit of 16x2.5 Gb/s found in conventional CWDM systems while still retaining the cost-effectiveness and the modular "pay as you grow" philosophy of CWDM. In this paper, we provide an overview of recent progress in the field of CWDM upgrade techniques. CWDM architectures with increased per channel bit-rates and sub-band DWDM channel overlays are reviewed and experimental results are presented. The particular combination of CWDM with DWDM sub-bands and bit-rate upgrades is expected to deliver the highest capacity gain. However, we also show that the suitability of the system for higher bit-rates hinges on the following considerations: the availability of low-cost 10-Gb/s DMLs at the respective wavelengths, the link budget and the chromatic dispersion of the deployed system.

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“…Nowadays, with the development of low water peak fibers (LWPF) established by the ITU-T G.652.C standard, it is possible the operation in entire spectrum, become feasible the effective utilization ofthe E band, over links up to 75Km [5] [7] [8]. Moreover, due to the wide channel spacing, it is possible to perform an upgrade integrating a DWDM system in installed CWDM system in order to attend a traffic demand growth and to maintain the original operation band [9] [10].…”

Section: Introductionmentioning

confidence: 99%

<title>Optimization of 16x2.5 Gbit/s metro CWDM transmission over 65 Km of standard fiber</title>

Lopes

Souza

2004

SPIE Proceedings

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We present a simulation of a 1 6 channels coarse wavelength division multiplexing (CWDM) system operating at 2.5 Gbit/s transmitted over 65 Km ofstandard fiber. The channel space was optimized in order to improve the use of the operation spectrum and to avoid the water peak. The results demonstrate the feasibility of 40 Gbit/s total capacity CWDM system operation using the S, C and L bands with bit error rate (BER) better than iO.

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In-service upgrade of an amplified 130-km metro CWDM transmission system using a single LOA with 140-nm bandwidth

Cited by 20 publications

References 0 publications

Transient Control by Free Ase Light Re-Circulation in EDFA Based WDM Ring Networks

Transient Control by Free Ase Light Re-Circulation in EDFA Based WDM Ring Networks

WDM transmission upgrade using low-cost uncooled components

<title>Optimization of 16x2.5 Gbit/s metro CWDM transmission over 65 Km of standard fiber</title>

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