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Optical Networking And Dense Wavelength Division Multiplexing (DWDM)
White Papers This paper deals with the twin concepts of optical networking and dense wavelength division multiplexing. Important optical networking concepts like wavelength routing and wavelength conversion are explained in detail.
[September 2, 2008, 7:35]
Simple Wavelength Assignment Protocol
White Papers Coupling IP routers with wavelength-selective optical cross-connects supports existing Internet infrastructure in a wavelength division multiplexing (WDM) optical network. Because optical wavelength routing is transparent to IP, packets can bypass...
[October 14, 2003, 1:30]
Dense Wavelength Division Multiplexing
White Papers To meet growing demands for bandwidth, a technology called Dense Wavelength Division Multiplexing (DWDM) has been developed that multiplies the capacity of a single fiber. Over the last decade, fiber optic cables have been installed by carriers as...
[September 5, 2003, 2:57]
Complexity Of Wavelength Assignment In Optical Network Optimization
White Papers Under Wavelength Division Multiplexing (WDM) technology, demands sharing a common fiber are transported on distinct wavelengths. This paper studies the complexity of a spectrum of design problems for optical networks in order to carry a set of...
[December 9, 2006, 0:00]
Importance Of Wavelength Conversion In An Optical Network
White Papers This paper examines some issues associated with routing an all-optical network and, especially, analyzes the impact of lack of wavelength conversion. Through simulation of a test network with OC-48 (2.5Gb/sec) services, we show that, contrary to...
[December 30, 2003, 1:11]
Characterization Of Optic Networks For High Bit Rate Time Division Multiplexed And Dense Wavelength Division Multiplexed Transport
White Papers The telecommunications industry has responded to this demand with the design and deployment of new DWDM (dense wavelength division multiplexed) and high bit rate TDM (time division multiplexed) optical transport systems with capacities from 40...
[September 11, 2004, 3:00]
Managed Wavelength Services: A Reality Check
White Papers Managed wavelength services are defined as customer dedicated wavelengths provisioned on a service provider's wave division (WDM) network. In the past there has been significant hype surrounding the emergence of managed wavelength services to...
[November 7, 2003, 4:37]
Time-Domain Wavelength Interleaved Networking With Wavelength Reuse
White Papers Time-domain Wavelength Interleaved Networking (TWIN) is a cost-effective network architecture that can provide fine-grained, flexible connectivity using passive optics in internal nodes. Each wavelength is dedicated to carry traffic to a single node.
[December 9, 2006, 0:00]
A Comparison Of Next-Generation 40-Gbps Technologies
White Papers There are many proposed optical transmission systems which offer 40-Gbps/ wavelength capacity. Today's photonic network is evolving towards greater path and wavelength agility as well as lower cost through operational simplicity.
[September 15, 2007, 1:01]
System Performance Comparison Of Optical CDMA And WDMA In A Broadcast Local Area Network
White Papers The performance of optical code-division multiple-access (CDMA) systems with wavelength-hopping/time-spreading codes is compared to that of a wavelength-division multiple-access (WDMA) system. The multiple-access techniques are applied in a time...
[July 25, 2004, 3:16]
Minimizing Maximum Fiber Requirement In Optical Networks
White Papers This paper studies wavelength assignment in an optical network where each fiber has a fixed capacity of ì wavelengths. Given demand routes, the aim is to minimize the maximum ratio between the number of fibers deployed on a link e and the number...
[December 7, 2006, 0:00]
Selective Transparency In Optical Networks
White Papers Core optical networks can benefit from lower costs and increased speed by reducing O-E-O conversions through use of ultra long reach optical transport, and bit-rate and wavelength transparent cross-connects.
[April 6, 2005, 3:00]
A Novel Efficient Technique For Traffic Grooming In WDM SONET With Multiple Line Speeds
White Papers To support traffic growth on these rings, WDM technology is used to provide multiple SONET rings on the same fiber, each SONET ring running on a separate wavelength. Traffic grooming refers to intelligently arranging low speed traffic streams onto...
[October 21, 2004, 3:00]
Design Tools For Transparent Optical Networks
White Papers Wavelength switching increases transparency by allowing different data streams, each encoded in a different wavelength of light, to be independently routed through an optical network. This paper discusses Bell Labs-developed software tools that...
[December 13, 2006, 0:00]
AudioCalc
Downloads Version 1.2 has added wavelength calculator, interactive file size chart, interactive wavelength chart, switchable measurement formats, and global preferences window. AudioCalc is a simple utility which calculates audio file sizes.
[March 29, 2008, 5:46]
Intel Shows Off Next-generation Production Tricks
News Key developments in the new process have included ways to create features with a greater precision than the wavelength of light used would normally allow, by compensating for the distortion. This means that existing equipment based on 192nm...
[November 24, 2003, 20:25]
Are These Wires The Future Of Crypto?
Blog The NIST system shoots out photons at a wavelength compatible with existing fibre-optic telecoms networks. It then converts them to a wavelength suited to a device that can detect single photons without adding a lot of noise.
[June 12, 2007, 18:19]
Networks Of Light Build On Cellphone Tech
News A different technology in widespread use employs a method called wavelength division multiplexing, in which each cell phone uses a different wavelength of light, according to the researchers. The University of California at Davis announced this...
[November 27, 2002, 15:57]
Intel: One Step Closer To 10GHz
News DUV lithography uses light with a wavelength of 248 nanometers that passes through the photomask, printing an image of the chip on silicon. But because most materials absorb UV light, researchers needed to come up with materials that reflect the...
[March 9, 2001, 8:38]
New Wireless Tech Promises Gigabits In The Home
News The chips from IBM rely on the portion of the radio spectrum from roughly 30 to 300 GHz, which is known as the millimetre wave frequency bands because the wavelength of radio waves in this section of the spectrum is best measured in millimetres.
[February 6, 2006, 16:40]
