A multimode or singlemode optical fiber with a uniform refractive index throughout the core. The step is the shift between the core and the cladding, which has a lower refractive index. See graded-index fiber, dispersion-shifted fiber and dispersion.
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2008 The Computer Language Company Inc. All rights reserved. |
Additional Resources
- Measuring the acceleration of the universe
- According to Theodor Hänsch, director at the Max Planck Institute for Quantum Optics MPQ in Germany and one of the winners of the 2005 Nobel Prize in Physics, a 'laser frequency comb' can now be used as a basis for new astronomical instruments. Telescopes using this method, which could 'answer...
- Blog posts 2008-09-06
- What the fight against cancer really needs
- What the fight against cancer really needsSadly this is where a problem existsCuring cancer would be great on the human level. But it doesn't make good business sense for doctors and pharmaceutical companies that rely on patients to make money. Much like many other diseases, it's more profitable to keep...
- Discussion threads 2008-09-05
- Microsoft exec rebuts hypervisor security claims
- Microsoft security strategist Steve Riley has answered claims that the company's hypervisor software could be maliciously replaced on PCs without administrators knowing. SYDNEY, AUSTRALIA--Senior Microsoft security strategist Steve Riley has used the vendor's TechEd conference in Sydney to rebut claims by a Polish researcher that Microsoft's hypervisor software could...
- News items 2008-09-05
- EA's 'Spore' aims to create new worlds, businesses
- Electronic Arts's creature-building game "Spore" offers players a chance to develop new worlds--and maybe even new lines of business for the video game maker. RALEIGH, North Carolina--Electronic Arts's creature-building game Spore offers players a chance to develop new worlds--and maybe even new lines of business for the video game...
- News items 2008-09-05
- End of an era: Dell may dump its factories
- End of an era: Dell may dump its factoriesRubbed up the wrong way?"The rub: It’s unclear whether contract equipment manufacturers would want to buy Dell’s manufacturing hubs. Do contract manufacturers really want to take on Dell’s capacity?"Don't CEM's want to take on everyone's capacity ... I mean isn't their model...
- Discussion threads 2008-09-05
- Seinfeld
- SeinfeldHow did this make it past focus groups?My theory is that they told the focus group subjects it was for a different company, and the subjects responded favorably. Therefore, we're all wrong and Microsoft is right.Wow, that's just brilliant!Windows' image is no longer tarnished. They are now being associated with...
- Discussion threads 2008-09-04
- Cablevision blankets Long Island with Wi-Fi
- Cablevision Systems, one of the biggest cable providers in the New York City metro area, announced that it's completed the first stage of a massive Wi-Fi network project called Optimum WiFi that will eventually cover the New York/New Jersey/Connecticut tri-state area. The company says that its wireless networking equipment now...
- Blog posts 2008-09-04
- SocialCast: enterprise Twitter/FriendFeed mashup
- SocialCast has revamped its group comms service, given it a facelift, aligned itself more closely to consumery apps like Twitter and FriendFeed and then given it an enterprise twist. As far as I am aware, this is the first enterprise facing application that has gotten close...
- Blog posts 2008-09-04
- Wireless Access: What Price Speed
- Is Verizon missing a trick in its trench warfare with Cablevision? Or has the maverick cable operator found an Achilles heel in the telephone operator's methods of providing TV, phone and particularly Internet access to customers in the New York area – and possibly nationwide? One...
- Blog posts 2008-09-04
- My first Linux laptop is the Asus EeePC netbook
- My first Linux laptop is the Asus EeePC netbookTotally different machines.A netbook is a full laptop. Yes, the industry is trying to keep the impression that it is only for casual use, etc, but there is little only constrained by ram these netbooks can't do (well, with Linux). ...
- Discussion threads 2008-09-04
- Is this Tuesday's 4G nano?
- Is this Tuesday's 4G nano?Starting to look like a Zune.What makes you think it's real? It could be an empty shell. The real questions are will it have replacable battery, will it do wireless song download, and will it have FM radio?First Step to iPhone Nano?Maybe the longer form factor...
- Discussion threads 2008-09-04
- The easiest little Web page ever built
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- Discussion threads 2008-09-04
- Dell repair adventure, day 5, with updates
- Since our last episode, our hero has been communicating with Bob Pearson, Dell's VP of Communities & Conversations, and Bill Bivin, Dell's Community Liaison, about getting my Dell Lattitude D620 back up and running. Both Bob and Bill give every impression of trying very hard to deal not only with...
- Blog posts 2008-09-04
- Sony announces three all-in-one desktops
- At a home theater show this week Sony announced three new all-in-one desktops along with a slew A/V receivers, LCD TVs and projectors, and Blu-ray players. All three AIOs offer Blu-ray drives, and the higher-end models offer rewritable BD drives. The entry-level VAIO JS series has a...
- Blog posts 2008-09-04
- Access Virtualization for Mac OS X - Aqua Connect ACTS 3.0
- Aqua Connect is an exception. It focuses on providing access virtualization for users of Mac OS-based servers. (For those keeping track, the post, Aqua Connect Access Virtualization for Mac OS X, introduced the company back in December 2007.) This time, the good folks at Aqua Connect are in the process...
- Blog posts 2008-09-04
- Axigen Mail Server Office Free Edition (msi)
- Axigen Office Edition is a reliable messaging solution intended for home users and small companies. It offers integrated mail services and basic support, personal organizer and groupware for 5 mailboxes, 1 server. Main services: ESMTP/IMAP/POP3/WebMail, integrated list server, advanced logging/reporting, all controlled from centralized Web/CLI Administration. Enhanced mobility and communication:...
- Software downloads 2008-09-04
- Sony Vaio JS190J (silver)
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- Product reviews 2008-09-03
- New dual/quad core CPUs enter Intel price list, AMD drops prices
- New dual/quad core CPUs enter Intel price list, AMD drops pricesLet's try FSB x 100 or x1000I don't see that quad core gets you anything unless the cores are assigned by software somehow.I think,at default setting,that they work in a series or parallel type thing---Intel forces AMD to be competitiveGreat...
- Discussion threads 2008-09-03
- Looking deeper into Comcast's new cap
- Looking deeper into Comcast's new capWhat's behind the Comcast cap?Well, I say we should strike "Comcast" and substitute "Cable" in its place!What I dislike the most about politically correct constructs is the milky-toast tone typically used. Cable Internet IS DEAD! The dinky little coax does well delivering low grade T.V.,...
- Discussion threads 2008-09-03
- Is there still an opportunity for TiVo?
- I used to watch TiVo. There's actually a double-meaning there. As a consumer, I loved my TiVo box and the TV-viewing flexibility that it introduced to my household. As a journalist, I watched the company, as well. No contest: I liked the service far more than I...
- Blog posts 2008-09-03
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