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Beginners' Guides
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Mobile WiMax
Beginners' Guides  | 
5/14/2007  |  Post a comment
Worldwide Interoperability for Microwave Access, for faster, more robust radio links
Optical Modulation
Beginners' Guides  | 
11/19/2001  |  12 comments
The switching on and off of laser light in order to represent information in an optical network
Optical Detection & Regeneration
Beginners' Guides  | 
10/9/2001  |  Post a comment
The conversion of noisy optical signals into clean electrical signals
Optical Networks
Beginners' Guides  | 
8/2/2001  |  Post a comment
Optical fibers connecting locations many miles apart, and carrying information in the form of on-off flashes of laser light
Optical Fiber
Beginners' Guides  | 
8/2/2001  |  18 comments
Very thin strands of pure silica glass through which laser light travels in an optical network
Wavelength Division Multiplexing (WDM)
Beginners' Guides  | 
8/2/2001  |  149 comments
Transmitting many different colors (wavelengths) of laser light down the same optical fiber at the same time, in order to increase the amount of information that can be transferred
Formatting for Transmission
Beginners' Guides  | 
8/1/2001  |  1 comment
The conversion of data into 1s and 0s, and the different ways in which these signals can be transmitted through optical fiber
Optical Networking Glossary
Beginners' Guides  | 
8/1/2001  |  5 comments
Optical Units Reference
Beginners' Guides  | 
8/1/2001  |  Post a comment
Multipliers, Optical Power, Gain & Loss, Wavelength & Frequency, and Bandwidth & Optical Modulation Bandwidth
Protocol Basics
Beginners' Guides  | 
8/1/2001  |  6 comments
Forms of communication among network devices to enable the exchange of information
Sonet (Synchronous Optical NETwork) and SDH (Synchronous Digital Hierarchy)
Beginners' Guides  | 
8/1/2001  |  23 comments
Physical-layer protocol that frames data for fast and reliable transmission over optical fiber
Internet Protocol (IP)
Beginners' Guides  | 
8/1/2001  |  2 comments
A network-layer protocol that puts Internet data into packets and helps them to be routed over interconnected local area networks (LANs)
Multiprotocol Label Switching (MPLS)
Beginners' Guides  | 
8/1/2001  |  4 comments
A protocol for the swift routing of data streams, bringing improved performance and quality-of-service options to IP traffic
Asynchronous Transfer Mode (ATM)
Beginners' Guides  | 
8/1/2001  |  12 comments
A data-link layer protocol allowing integration of voice and data with the ability to provide quality-of-service guarantees
Ethernet
Beginners' Guides  | 
8/1/2001  |  79 comments
A data-link layer protocol commonly used to transfer Internet Protocol (IP) packets over cables in local area networks (LANs)
Digital Wrappers and Forward Error Correction (FEC)
Beginners' Guides  | 
8/1/2001  |  16 comments
An encapsulation method for traffic of all protocols, allowing an optical network to be protocol transparent, its functions to be managed in an efficient manner, and its data to be transmitted more reliably
Laser Basics
Beginners' Guides  | 
8/1/2001  |  Post a comment
Devices giving out intense light at one specific color
Distributed Feedback (DFB) Lasers
Beginners' Guides  | 
8/1/2001  |  Post a comment
Lasers giving out a very sharply defined color of light
Tunable Lasers
Beginners' Guides  | 
8/1/2001  |  9 comments
Lasers that can be adjusted to emit one of several different wavelengths
Vertical Cavity Surface Emitting Lasers (VCSELs)
Beginners' Guides  | 
8/1/2001  |  Post a comment
Lasers that emit light from their surface in contrast with regular 'edge emitters'
Optical Amplification
Beginners' Guides  | 
8/1/2001  |  Post a comment
Boosting of an optical signal without any conversion of the light into an electrical signal
Erbium Doped-Fiber Amplifiers (EDFAs)
Beginners' Guides  | 
8/1/2001  |  7 comments
Optical amplifiers made of short lengths of optical fiber doped with the element 'erbium'. A laser excites erbium ions in the fiber, which can then give their energy to optical signals passing through
Raman Amplification
Beginners' Guides  | 
8/1/2001  |  25 comments
Optical amplification process throughout the actual transmission fiber in an optical network, caused by a carefully selected pump-laser wavelength scattering from atoms in the fiber and changing its wavelength to that of the optical signal
Semiconductor Optical Amplifiers (SOAs)
Beginners' Guides  | 
8/1/2001  |  4 comments
Similar to regular lasers, but with an optical signal being amplified by stimulating light emission
Nonlinear Effects
Beginners' Guides  | 
8/1/2001  |  Post a comment
High optical powers causing various effects on signals in optical fibers, usually detrimental
Chromatic Dispersion and Polarization Mode Dispersion (PMD)
Beginners' Guides  | 
8/1/2001  |  Post a comment
The spreading out of light pulses in time due to different wavelengths traveling at different speeds (chromatic dispersion) or different polarization states traveling at different speeds (polarization mode dispersion)
Arrayed Waveguide Gratings (AWGs)
Beginners' Guides  | 
8/1/2001  |  Post a comment
Integrated optical circuits that can combine (multiplex) or separate (demultiplex) different wavelength signals in an optical network
Fiber Bragg Gratings (FBGs)
Beginners' Guides  | 
8/1/2001  |  8 comments
Small sections of optical fiber that act like selective mirrors, only reflecting back specific wavelengths
Submarine Systems
Beginners' Guides  | 
8/1/2001  |  Post a comment
Optical fiber links connecting countries through the world's oceans
Optical Crossconnects
Beginners' Guides  | 
8/1/2001  |  41 comments
Devices that can switch optical signals between different optical fibers, without the need for conversion to electrical signals
Advanced Fiber Types
Beginners' Guides  | 
8/1/2001  |  1 comment
Optical fiber designed to work with, or in place of, conventional fiber in order to improve overall system performance


Flash Poll
From The Founder
The New IP is actually bigger even than business. Like another hugely important tech that Light Reading is digging into right now, the New IP has the potential to change the world by fundamentally advancing what it is possible for people to achieve with communications.
Que Sera Sarah
Growth of the 5G Ecosystem

3|6|15   |   1:15   |   (1) comment


Use cases and industry collaborations dominated 5G discussions during Mobile World Congress 2015. For what the road to 5G means for operators and their partners, head to the Building America's 5G Ecosystem event in New York on April 14.
LRTV Custom TV
Sonus NaaS IQ Real-Time Demo

3|6|15   |   4:03   |   (0) comments


Compass Networks Chairman and CEO Matt Bross and Ray Dolin, CEO of Sonus Networks, demonstrate their Sonus IQ SDN solution using a live video conference connection.
LRTV Custom TV
LRTV Talks Carrier WiFi & WiFi Calling With Aptilo Networks

3|6|15   |   4:53   |   (0) comments


We stopped by Aptilo Networks, a market leader in WiFi service management and offloading, to discuss the new possibilities with next-generation WiFi calling and why WiFi should be a natural part of any operator strategy.
LRTV Interviews
NGMN Chairman Outlines His 5G Vision

3|6|15   |   5:10   |   (1) comment


Bruno Jacobfeuerborn, chairman of the NGMN Alliance and Deutsche Telekom CTO, shares his thoughts on the challenges, opportunities and costs of 5G.
LRTV Interviews
In the Cloud With Telecom Italia

3|5|15   |   7:10   |   (0) comments


Light Reading CEO Steve Saunders sits down with Telecom Italia's Simone Battiferri at Mobile World Congress to discuss virtualization, agility and the economic advantages of the cloud.
LRTV Huawei Video Resource Center
New Ways of Working

3|5|15   |   4:24   |   (0) comments


At the ICT Leaders Roundtable, hosted jointly by Light Reading and Huawei at the Hotel Renaissance in Barcelona just prior to Mobile World Congress, Hong Kong Telecom's Michael Yue explains how the transformation in its business has changed its customer relationships.
LRTV Huawei Video Resource Center
Bridging the Digital Gap

3|5|15   |   4:03   |   (0) comments


At the ICT Leaders Roundtable, hosted jointly by Light Reading and Huawei at the Hotel Renaissance in Barcelona just prior to Mobile World Congress, Boingo's Dr. Derek Peterson explains how ICT can help telcos bring the physical and virtual worlds closer together.
LRTV Huawei Video Resource Center
Making the Internet of Things Affordable

3|5|15   |   2:42   |   (0) comments


At the ICT Leaders Roundtable, hosted jointly by Light Reading and Huawei at the Hotel Renaissance in Barcelona just prior to Mobile World Congress, Telefonica's Dr. Mike Short explains how the Internet of Things demands a new low-cost approach to connectivity from telcos.
LRTV Huawei Video Resource Center
Evolution, Not Revolution

3|5|15   |   2:00   |   (0) comments


At the ICT Leaders Roundtable, hosted jointly by Light Reading and Huawei at the Hotel Renaissance in Barcelona just prior to Mobile World Congress, Heavy Reading's Patrick Donegan explains why telcos can't be too hasty in their efforts to transform themselves.
LRTV Custom TV
Management & Orchestration Enablement Strategies Required for NFV Commercial Success

3|5|15   |   6:22   |   (0) comments


NFV commercial success rests on successful service orchestration strategies which can span heterogeneous physical, virtual, legacy and next-gen networks. Network data and security integrity are additional key aspects. Nakina provides a suite of orchestratable network integrity applications built on an open, scalable MANO enablement platform.
LRTV Huawei Video Resource Center
The Power of Five Convergences in OceanStor OS

3|4|15   |   6:24   |   (0) comments


OceanStor OS is Huawei's brand-new storage operating system. While inheriting the consistent high stability, reliability and performance from the company's previous storage products, OceanStor OS abounds in new converged storage features. Specifically, the new storage operating system achieves "five convergences" to lift storage convergence to a higher level.
LRTV Huawei Video Resource Center
4K Brings Extreme Video Experience

3|4|15   |   8:10   |   (0) comments


4K video is a hot topic in the video industry. It will certainly bring an extreme video experience to end users. At the same time, however, it will also pose a big challenge to operators. Check out this Huawei 4K experts' discussion about how operators can achieve success in 4K video service.
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April 14, 2015, The Westin Times Square, New York City, NY
May 12, 2015, Grand Hyatt, Denver, CO
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June 8, 2015, Chicago, IL
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June 9, 2015, Chicago, IL
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Infographics
Net neutrality, broadband services and the current outlook on data consumption, as presented by the New Jersey Institute of Technology.
Hot Topics
Internet Pioneers Decry Title II Rules
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BETWEEN THE CEOs - Executive Interviews
Light Reading CEO Steve Saunders talks transformation and virtualization – including Light Reading's independent testing of the vendor's virtualization solutions – with Cisco CEO John Chambers at Mobile World Congress in Barcelona.
Check out Light Reading's interview with Jay Samit, the newly appointed CEO of publicly traded SeaChange International Inc. With a resume that includes Sony, EMI, and Universal, Samit brings a reputation as an entrepreneur and a disruptor to his new role at the video solutions company. Hear what he had to say about the opportunities in video, as well as the outlook for cable, telco, OTT and mobile service providers.
G'day! And welcome to an entirely new feature on Light Reading -- our weekly "CEO-to-CEO" interview.