160-Gb/s CWDM Capacity Upgrade Using 2.5-Gb/s Rated Uncooled Directly Modulated Lasers

Thiele, H.J.; Winzer, Peter J.; Sinsky, J.H.; Stulz, L.W.; Nelson, L.E.; Fidler, Franz

doi:10.1109/lpt.2004.834478

Cited by 11 publications

(5 citation statements)

References 6 publications

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“…It is expected that the increased demand in the future will be a driving force for the availability of uncooled lasers at those the remaining wavelengths. An upgraded system demonstrating 10 Gb/s for all 16 CWDM channels is reported in [6] and presented in section 3.3.…”

Section: Concepts For Cwdm Upgradementioning

confidence: 99%

“…Using NZDSF: In the fist part, the bandwidth of the DMLs was increased by careful mounting and optimized driving conditions as described in detail in reference [6]. The 16 lasers were simultaneously driven by 9.95-Gb/s pseudo-random bit sequences of length 2 31 -1 via a 2:16 electrical splitting network.…”

Section: Full Upgradementioning

confidence: 99%

“…Measurements of margin and power penalties for all 10Gb/s operated DMLs after 40km NZDSF transmission, ref[6] …”

mentioning

confidence: 99%

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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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Section: Concepts For Cwdm Upgradementioning

confidence: 99%

Section: Full Upgradementioning

confidence: 99%

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WDM transmission upgrade using low-cost uncooled components

Thiele

Winzer

2005

SPIE Proceedings

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“…These characteristics make them a very attractive option in the design of optical systems for CWDM (Coarse Wavelength Division Multiplexing) networks [2]. However systems employing such lasers suffer a considerable spectral broadening due to the residual frequency modulation produced by the chirp.…”

Section: Introductionmentioning

confidence: 99%

Analysis of linewidth and extinction ratio in directly modulated lasers for performance optimization in 10Gbit/s CWDM systems

Campos

Horche

Martín-Mínguez

2010

Optics Communications

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“…Undoubtedly, the 1310 nm transmission window is experiencing renewed interest. Multi-Gbit/s 1310 nm transmission technology is employed in access and metro networks [1][2]. The long-haul core network is traditionally centered on the 1550 nm transmission window.…”

Section: Introductionmentioning

confidence: 99%