TechRepublic Resources
- Images: Streaking star carries a tail of seeds
- NASA discovered that a red-giant star rocketing across the universe is leaving a trail of debris that could eventually form new stars, solar systems and even life. NASA scientists are ecstatic over the discovery of a tail or trail of gas and dust trailing the red giant star Mira as...
- Tags: Mira, tail, wavelength, trail, NASA, debris, scientist, shock
- Image galleries 2007-08-22
- Design Tools for Transparent Optical Networks
- Optical technology promises to revolutionize data networking by providing enormous bandwidth for data transport at minimal cost. A key to cost reduction is to increase transparency, that is, to keep a data stream encoded as an optical signal for as long as possible. Wavelength switching increases transparency by allowing different...
- Tags: Optical Network, Wavelength, Tool, Fiber Optics, Optical Networking, Productivity, Networking, Telecommunications
- White papers 2006-08-04
- Time-Domain wavelength Interleaved Networking With wavelength Reuse
- 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. This paper introduces TWIN with Wavelength Reuse (TWIN-WR), an extension of TWIN that allows the number of...
- Tags: Network, Wavelength, Time-domain Wavelength Interleaved Networking, Engineering, Networking
- White papers 2006-01-09
Additional Resources
- Optical Networking and Dense wavelength Division Multiplexing (DWDM)
- This paper deals with the twin concepts of optical networking and dense wavelength division multiplexing. The paper talks about the various optical network architectures and the various components of an all-optical network like Optical Amplifiers, Optical Add/Drop Multiplexors, Optical Splitters etc. Important optical networking concepts like wavelength routing and wavelength...
- Tags: DWDM, Optical Networking, Fiber Optics, Networking, Telecommunications
- White papers 1999-11-24
- Service Level Agreement in Optical Networks
- This paper proposes a Service Level Agreement applied to the Optical domain (O-SLA), which is expected to be the near and long term network technology thanks, among other things, to the great bandwidth capacity offered by optical devices. After an exposition of the rationale behind an optical SLA, parameters which...
- Tags: SLA, Optical Network, Service Level Management, Networking, It Operations, It service Management
- White papers 2004-11-15
- wavelength Assignment to Minimize the Number of SONET ADMs in WDM Rings
- Optical Wavelength Division Multiplexing (WDM) rings are being deployed to support SONET/SDH self-healing rings. The cost of such a system is dominated by the SONET Add/Drop Multiplexers (ADMs). To minimize the system cost, algorithms must be developed to assign wavelengths to lightpaths in the system so that the number of...
- Tags: SONET, Florida State University, WDM, Wavelength Assignment, Fiber Optics, Optical Networking, Networking, Telecommunications
- White papers
- Dynamic Multiservice Delivery With Reconfigurable DWDM Networks
- Traditional dense wavelength-division multiplexing (DWDM) networks, whether hub and-spoke or mesh architectures, have significant challenges meeting the dynamic wavelength demands for user services. Service providers and enterprises rely on flexible aggregation devices that can build efficient, dynamic Layer 2 and Layer 3 architectures to manage the difficulty of provisioning unplanned...
- Tags: DWDM, Optical Networking, Ethernet, Networking
- White papers 2005-06-01
- Minimizing Maximum Fiber Requirement in Optical Networks
- 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 of fibers required on the same link...
- Tags: Optical Network, Fiber, Network Technology, Fiber Optics, Networking, Telecommunications
- White papers 2005-07-15
- Complexity of wavelength Assignment in Optical Network Optimization
- This paper studies the complexity of a spectrum of design problems for optical networks in order to carry a set of demands. Under Wavelength Division Multiplexing (WDM) technology, demands sharing a common fiber are transported on distinct wavelengths. Multiple fibers may be deployed on a physical link. The basic goal...
- Tags: Lucent Technologies Inc., Optical Network, Optimization, Goal, Alcatel, Fiber, Fiber Optics, Optical Networking, Network Technology, Networking, Telecommunications
- White papers
- A Comparison of Next-Generation 40-Gbps Technologies
- There are many proposed optical transmission systems which offer 40-Gbps/ wavelength capacity. The unbridled adoption of these solutions may well depend on the degree to which they overlay on existing dense WDM 10-Gbps links. This paper provides a description of new 40-Gbps technologies being proposed and reveals their true compatibility...
- Tags: Nortel Networks Corp., Optical Networking, Networking
- White papers 2007-07-06
- AudioCalc (zip)
- AudioCalc is a simple utility which calculates audio file sizes. Given any bit depth, sample rate, number of tracks, and number of channels (mono/stereo). AudioCalc can tell you either how much space a file (or set of files) of a given length and format will take up or. How long...
- Tags: Audio, AudioCalc
- Software downloads 2008-04-15
- Dense wavelength Division Multiplexing (DWDM)
- Dense wavelength division multiplexing (DWDM) is a fiber-optic transmission technique that employs light wavelengths to transmit data parallel-by-bit or serial-by-character. This tutorial addresses the importance of scalable DWDM systems in enabling service providers to accommodate consumer demand for ever-increasing amounts of bandwidth. DWDM is discussed as a crucial component...
- Tags: DWDM, Optical Networking, Networking
- White papers
- MHX Physics Helper (zip)
- MHX Physics Helper is a tutorial and assistant to solve several types of physics equations. It shows what these equations are, where to plug in numbers. And can solve them for you as well. The kinds of equations include beat frequency, angular momentum, de broglie wavelength, Einstein's relativistic mass-energy relation,...
- Tags: Equation, MHX Physics Helper
- Software downloads 2007-02-20
- It's not easy being Wint-O-Green
- We asked what substance in Wint-O-Green Life Savers makes this particular brand and flavor of candy more prone to triboluminescence, the creation of light by friction, often associated with crushing, scratching, or—in this case—chewing solid objects.It's all a matter of taste. The methyl salicylate flavoring—otherwise known as oil of wintergreen—is...
- Tags: Wint-O-Green Life Savers
- Technical articles 2003-09-02
- A new wavelength for satellite radio
- Link to the photo gallerySlacker's ambitious music producthttp://content.techrepublic.com.com/2346-3513_11-58549.htmlStay on top of the latest tech news with our free IT News Digest newsletter, delivered each weekday. Automatically sign up today!http://nl.com.com/MiniFormHandler?brand=techrepublic&list_id=e019
- Tags: Sonja Thompson, satellite radio, satellite, radio
- Discussion threads 2007-03-14
- The Best of Long-Haul Terrestrial and Submarine DWDM
- Alcatel is renowned for its experience in the deployment of long-haul terrestrial and submarine DWDM networks. Whether upgrading legacy systems or rolling out new networks, operators need to find the most appropriate solutions in order to keep costs under control and the competition at bay. Illustrated with examples of current...
- Tags: DWDM, Alcatel, Optical Networking, Networking, Hardware Upgrade, Hardware
- White papers 2005-09-01
- Fundamentals of DWDM Technology
- The early DWDM designs were built to fulfill the needs of the long-distance carrier. While that demand still exists, the need for DWDM on the local front is growing. If DWDM is the first step to optical networking, the Carriers have strong incentive to bring DWDM to metropolitan areas. Expect...
- Tags: DWDM, Optical Networking, Networking
- White papers 2000-12-19
- Meteosat Animator (widget)
- Displays images for area D2 (Europe and North Africa), you can select the wavelength of the images and colourized or black and white versions. Optionally you can overlay a second image on top of the main image to produce a combined animation. Sector D2 images for Fog/low cloud (night time...
- Tags: Image
- Software downloads 2007-06-05
- Basics of Optical Networking
- Optical networks have been making “waves” recently, following the opening up of the national long distance market. We can expect a few Indian operators to install national optical networking backbones (surely, even just going by all the digging on the streets!). By and large, these backbones...
- Tags: DWDM, Optical Networking, Fiber Optics, Networking, Telecommunications
- White papers 2000-11-28
- Cisco IP Over DWDM Solution for IP NGN
- The Cisco IP over DWDM solution for IP NGN, which helps enable the convergence of service providers' core IP and Dense Wavelength-Division Multiplexing (DWDM) networks, increases service flexibility and reliability and lowers Operating Expenses (OpEx) and Capital Expenditures (CapEx) while efficiently managing traffic growth through the Cisco CRS-1 Carrier Routing...
- Tags: DWDM, IP, Cisco Systems Inc., Optical Networking, Networking, Network Technology
- White papers 2006-02-01
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