A practical vision for optical transport networking

Alferness, R. C.; Bonenfant, P.; Newton, Curtis J.; Sparks, Kevin; Varma, Eve L.

doi:10.1002/bltj.2144

Cited by 31 publications

(15 citation statements)

References 12 publications

(8 reference statements)

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“…By analogy with TDM systems, the evolution from simple point-to-point systems to multipoint wavelength-based networks was rather apparent 16 (see Figure 2). While WDM point-to-point systems provide very large capacity between widely spaced (300-to 600-km) end terminals, in many networks it is necessary to drop some traffic at intermediate points Again by analogy to TDM networks, the next logical evolutionary step would be WDM rings in which node-to-node bandwidth provisioning, as well as network protection, is based on wavelength channels (see Figure 2).…”

Section: Optical Networkmentioning

confidence: 97%

The evolution of optical systems: Optics everywhere

Alferness¹,

Kogelnik²,

Wood

2002

Bell Labs Tech. J.

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Section: Optical Networkmentioning

confidence: 97%

The evolution of optical systems: Optics everywhere

Alferness¹,

Kogelnik²,

Wood

2002

Bell Labs Tech. J.

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“…As described in [1], introduction of DWDM represented the first step towards optical networking because it employed wavelength-based transport. However, these backbone DWDM deployments were generally point-to-point (P2P) applications, with the necessary flexibility for service multiplexing, aggregation, and networking provided by the underlying TDM systems.…”

Section: High-speed Electronicsmentioning

confidence: 99%

“…With resurgence of industry interest in optical transport network evolution, the OTN is poised to truly emerge as the converged optical transport infrastructure solution "offering carriers unprecedented architectural flexibility-the client protocol (and bit rate) independence, and service differentiation" envisioned a decade ago [1]. SILVANO …”

Section: High-speed Electronicsmentioning

confidence: 99%

“…The industry view was that transport networks would need to become optimized for much larger capacity channels carrying broadband data, voice, and video. At the same time, driven by the vision of virtually infinite information bandwidth and transport in the optical domain, research thrusts accelerated in exploring sophisticated photonic devices and techniques to allow the transport and routing of signals in the optical domain [1].…”

Section: Historymentioning

confidence: 99%

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Realizing the optical transport networking vision in the 100 Gb/s era

Frigerio¹,

Lometti²,

Rahn³

et al. 2010

Bell Labs Tech. J.

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emerging ultra-high bit rate services (e.g., IEEE 100GBASE-R, 40GBASE-R).Leveraging optical control plane advances, dynamically configurable OTN and IP-over-OTN solutions deliver on the promise of rapid provisioning, increased automation, and richer sets of service functionality. The control plane enabled OTN opens the door to new services, similar to how signaling system 7 (SS7) opened up the possibilities for advanced intelligent networking (AIN) for the public switched telephony network (PSTN). IP-over-OTN solutions not only provide a dynamically configurable optical layer responsive to IP networking demands, but enable multi-layer optimization with superior service resiliency. This paper examines OTN standardization advances and how OTN-based networking helps service providers

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“…O ptical communication networks transport hundreds of gigabits per second over hundreds of kilometers (1,2). The efficient transmission of data relies on the integration of optoelectronic devices and optical fibers.…”

mentioning

confidence: 99%

All-optical processing with molecular switches

Raymo

Giordani

2002

Proc. Natl. Acad. Sci. U.S.A.

195

100

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A gradual transition from electrical to optical networks is accompanying the rapid progress of telecommunication technology. The urge for enhanced transmission capacity and speed is dictating this trend. In fact, large volumes of data encoded on optical signals can be transported rapidly over long distances. Their propagation along specific routes across a communication network is ensured by a combination of optical fibers and optoelectronic switches. It is becoming apparent, however, that the interplay between the routing electrical stimulations and the traveling optical signals will not be able to support the terabit-per-second capacities that will be needed in the near future. O ptical communication networks transport hundreds of gigabits per second over hundreds of kilometers (1, 2). The efficient transmission of data relies on the integration of optoelectronic devices and optical fibers. They are responsible for the generation, amplification, conduction, routing, and detection of optical signals. At each step, the continuous interplay between optical and electrical stimulations controls data processing. In particular, electronically controlled switches guide the traveling optical signals along programmed routes across the communication networks. Signal routing requires multiple optoelectronic and electroopitc conversion steps. From input fibers, the propagating optical signals reach the routing devices, where they are converted into electrical signals, processed in this form, reconverted into optical signals and, finally, directed to specific output fibers. These inevitable optoelectronic and electroopitc conversions are a major ''bottleneck'' to the development of optical networks (3, 4). Besides the obvious loss in signal intensity associated with each conversion step, these switching devices are relatively slow and can process only few signals simultaneously. Only a tiny fraction of the potential transmission capacity of optical fibers is used in present communication networks. These limitations are stimulating considerable research efforts to develop innovative operating principles for optical switching (5-8).A variety of clever and efficient strategies to completely eliminate undesired optoelectronic and electroopitc conversion steps have already been identified (5-8). It is now possible to maintain the propagating signals exclusively at the optical level. However, these methods rely heavily on electronics and, presumably, they will not be able to support the terabit-per-second capacities that will be needed in the near future. Their major limitation is that the switching operations are still controlled by electrical stimulations. The traveling optical signals are routed in response to electrical signals, which cannot handle the immense parallelism offered by optical fibers. Strategies to control optical signals in response to optical signals are potentially much more attractive. However, the identification of reliable operating principles for all-optical switches is a challenging goal.Molecular switch...

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A practical vision for optical transport networking

Cited by 31 publications

References 12 publications

The evolution of optical systems: Optics everywhere

The evolution of optical systems: Optics everywhere

Realizing the optical transport networking vision in the 100 Gb/s era

All-optical processing with molecular switches

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