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Topic: Optical communications


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In the News (Sun 21 Apr 19)

  
 MRV Communications Granted Patent on Breakthrough Free Space Optics Technology
The patented All-Optical FSO technology is an ideal solution for fast deployment of building-to-building communication, first-mile connectivity, Crowded Urban environments and campus communications, as well as for crossing difficult terrain like highways and rivers, and disaster recovery and temporary solutions.
The fiber optic communications industry realized from the start the importance of an all-optical system approach, as higher capacity and lower-cost up-gradeability became customer requirements in the broadband access communication networks.
MRV COMMUNICATIONS, INC. (Nasdaq: MRVC), a world-class leader in optical components and network infrastructure products and services, has been granted a key Free Space Optics (FSO) industry patent.
www.mrvpal.com /Patent.htm

  
 Los Angeles Business Journal: Losses Force Strategic Shift at Tech Firm - MRV Communications Inc. considers divestiture - Brief Article - Company Profile - Statistical Data Included
When the optical network components firm spun off a piece of its Luminent subsidiary in a $144 million public offering last November, it was supposed to be the first of several offerings to raise capital while retaining control of proprietary technologies.
The company's Optical Access sub subsidiary designs optical wireless solutions for the last mile of the fiber-optic network, and the other units make network management applications, fiber-optic drivers, core routers, semiconductor optielectronic components, optical solutions for regional-area networks and modules for monitoring optical networks.
MRV has already pulled back from taking its Optical Access subsidiary public, after having filed for an IPO last fall.
findarticles.com /cf_dls/m5072/23_23/75648223/p1/article.jhtml

  
 MRV Communications - Press Releases
MRV Communications is a world-class leader in optical components and network infrastructure systems.
CHATSWORTH, Calif., Jun 12, 2001 /PRNewswire/ -- MRV Communications, Inc., a world-class leader in optical components and network infrastructure systems, today announced it will be presenting at the Bear Stearns 12th Annual Technology Conference at The Grand Hyatt in New York City, Thursday June 14th at 3:50 PM Eastern.
MRV's business model consists of forming independent business units such as Luminent Inc., Optical Access Inc., iTouch Communications, Cescomm and NBase-Xyplex.
www.zumanetworks.com /newsroom/pr/pr-print.php/81

  
 Electronics and Communications Engineering
Optical versus radio frequency communications - Optical fibers - Ray representation in optical fibers - Modal analysis in step and graded index optical fibers - Signal degradation - Optical receivers -  Optical properties of III -V semiconductors  - Emitters: SC laser diodes, light emitting diodes - Photo detectors PIN and avalanche photo diode (APD).
Random processes representation - Noise in am communication systems - Noise in fm and PM systems - Noise in pulse modulation systems - Matched filter receiver - Source coding and data compression - Error detection and correction - Block codes - Cyclic codes - Convolutional codes.
Classification of computer communication networks  - LAN topologies  - Transmission media   - Error control   - Fundamentals of queuing theory  - Performance of local area networks  - LAN standards  - Practical examples for LAN operating systems  - LAN security.
services.eng.cu.edu.eg /Course/5/en/17.htm   (1662 words)

  
 Greenbackers.com Internet & Technology Stock news, financial portal, stock directories, fastest growing companies list, momentum & daily stock alerts, stock picks
The principal focus of the MRV group of companies, which now comprises 14 companies, is Optical components, Optical networks and Internet infrastructure.
MRV has initiated and funded start-up companies including Zaffire Inc., Charlotte's Networks, Hyperchannel, Zuma Networks and most recently RedC Optical Networks Inc., Optical Crossing and All Optical Inc.
MRV continued it's acquistion spree yesterday with Geneva, Switzerland-based CES and recently with Jolt Techologies.
www.greenbackers.com /grnhotstock.htm   (1662 words)

  
 Flight R & D
When the optical communications telescope looks back at earth for acquisition and tracking and downlink, the sun is generally in the background and at times partially within its field of view.
The NASA/JPL patented optical communications demonstrator (OCD) is a laboratory prototype development of a scalable architecture that with minor modifications could accommodate optical communications links from airborne platforms to near-earth-space-borne satellites to planetary-spacecraft.
We are proposing a series of initial air-to-ground optical communications demonstrations to demonstrate acquisition tracking and pointing (ATP) and high data rate (~ 1-2.5 Gbps) transmission of data.
lasers.jpl.nasa.gov /PAGES/flight.html   (2079 words)

  
 ORGA - TRADE a.s. - MRV Communications
Optical Access is a daughter company of the MRV concern, the main manufacturer of optical data transferring components.
This strong advantage of MRV is fully used in Optical Access products and solutions, which belong to the most sophisticated players in the complex optical solutions market.
Optical Access, originally focused on production of LAN components, has changed its business direction in the last few years, and now it provides solutions for local and global ISPs.
www.orga.sk /en/mrv.htm   (2079 words)

  
 Call for Papers
For the new publication, we invite the submission of high-quality manuscripts on advances in the state-of-the-art of optical communications and networks.
Starting from the second half of 2003, the regular issues of J-SAC will be supplemented each year by two or more issues dedicated solely to optical communications and developed from articles submitted in the general optical communications and networking area.
From March 1999 to December 2001, J-SAC was expanded to include a wireless communications series that addressed the large and rapidly growing interest in wireless communications.
www.argreenhouse.com /society/J-SAC/Calls/OCN.html   (514 words)

  
 Printer Friendly Version
Long-haul optical communications systems rely on a variety of electrical and optical components to send and receive high-rate data.
Modulation techniques that extend the distance between optical amplifiers can reduce hardware costs in long-haul optical communications systems.
Fortunately, iTerra Communications (Palo Alto, CA) has developed its model iT6130 (see table), a single surface-mount module that combines a non-return-to-zero (NRZ)/return-to-zero (RZ) converter and a modulator driver for long-haul applications to 11.5 Gb/s.
www.mwrf.com /Articles/Print.cfm?ArticleID=7757   (1331 words)

  
 Joseph M. Kahn
His current research interests include single- and multi-mode optical fiber communications, free-space optical communications, and MEMS for optical communications.
From 1990-2003, he was on the faculty of the Department of Electrical Engineering and Computer Sciences at U.C. Berkeley, performing research on optical and wireless communications.
StrataLight is developing transceiver technology for robust, spectrally efficient optical fiber transmission at 40 Gb/s.
nova.stanford.edu /people/kahn.html   (170 words)

  
 Nortel Networks: Midcontinent Communications Enables Video, Data Services Based on Next Generation SONET Solutions from Nortel Networks
In addition, Midcontinent Communications will deploy Nortel Networks Optical Metro 5200 DWDM (dense wavelength division multiplexing) platform, enabling a truly regional transport network for seamless capacity and growth of infrastructure and services.
SIOUX FALLS, S.D. – Midcontinent Communications, a carrier’s carrier and regional service provider in North and South Dakota, has built a regional optical network capable of transporting data and video traffic over a multiservice optical network based on next generation SONET solutions from Nortel Networks* [NYSE/TSX: NT].
By deploying Nortel Networks Optical Metro 3500, Midcontinent Communications has enabled efficient and cost-effective delivery of video and data services.
www.nortelnetworks.com /corporate/news/newsreleases/2004c/09_28_04_midcontinent_communications.html   (170 words)

  
 StrataLight Communications - long-haul fiber transmission solutions
StrataLight Communications delivers 40 Gigabit per second fiber transmission subsystems, sold as OEM products to carriers by optical networking equipment manufacturers and system integrators.
The company has a broad portfolio of intellectual property and a senior team with significant expertise in the design of: SONET/SDH optical systems, high-speed optical communications IC’s, multi-chip module packaging, digital hardware and element management software.
Headquartered in Silicon Valley, California, StrataLight was founded by leaders in the communications and networking industries and is funded by top-tier venture capital firms.
www.stratalight.com   (161 words)

  
 Joseph M. Kahn
His current research interests include single- and multi-mode optical fiber communications, free-space optical communications, and MEMS for optical communications.
From 1990-2003, he was on the faculty of the Department of Electrical Engineering and Computer Sciences at U.C. Berkeley, performing research on optical and wireless communications.
StrataLight is developing transceiver technology for robust, spectrally efficient optical fiber transmission at 40 Gb/s.
nova.stanford.edu /people/kahn.html   (161 words)

  
 Light Reading - Networking the Telecom Industry
MRV's business units include iTouch Communications, Optical Access, and NBase-Xyplex.
MRV Communications Inc. (Nasdaq: MRVC - message board) found a crush of buyers a day after the IPO price range for its Luminent Inc. subsidiary was set (See Luminent Closes in on IPO).
"We think that an incubator in optical networking is interesting stock, and optical's a hot sector at present," says Erik Weir, president and CEO of Weir Capital Management, which holds a position in MRV.
www.lightreading.com /document.asp?doc_id=1711   (161 words)

  
 Alcadon Ab
MRV Communications, Inc. is a world-class leader in optical components and network infrastructure products and services.
The MRV solution to the last mile bottleneck is an integrated solution, which uses both electric and optical based technologies.
The building blocks of the MRV solution include the OptiSwitch(TM), the TereScope(TM), for optical wireless links, and for switching, routing and mesh-enabling, and MegaVision, for advanced network management.
www.alcadon.fi /vdslnews.htm   (161 words)

  
 U.S. Pregrant 20040032661 - Optical dispersion compensating device and optical dispersion compensating method using the device
In the past, the occurrence of wavelength dispersion in signals transmitted through optical fibers caused considerable problems in terms of communications at a communications bit rate of 10 Gbps or more, and particularly optical communications at 20 Gbps or more.
In the present invention, the problems were solved using an optical dispersion compensating element comprising a multi-layer film element.
Optical dispersion compensating device and optical dispersion compensating method using the device
cxp.paterra.com /uspregrant20040032661.html   (161 words)

  
 Williams Communications Group
Williams Communications Closing in on Industry's First All-Optical Network; Williams Communications Enters Into Agreement to Deploy Corvis' Optical Solution
Williams Communications Establishes Internet Services Group; Internet Services Group Focused on Development of Intelligent Optical Network And Integrated Services
WilTel Communications Stock to Begin Trading on Nasdaq Today
www.prnewswire.com /comp/875550.html   (161 words)

  
 MRV Communications Inc shares from FramedShare.co.uk
MRV Communications conducts its optical components business through Luminent, Inc., a wholly owned subsidiary that designs, manufactures and sells optical communications components.
MRV Communications, Inc. designs, manufactures, sells, distributes, integrates and supports network infrastructure equipment, services and optical components.
• All correspondence will come directly from MRV Communications Inc once the share certificate is delivered.
www.framedshare.co.uk /Product.asp?shareid=5552   (161 words)

  
 SurfWax: Company News and Articles On MRV Communications
LuminentOIC is a wholly owned subsidiary of MRV Communications (Nasdaq: -) and a world-class, leading edge manufacturer of optical components since 1988.
June 1 /PRNewswire-FirstCall/ -- MRV Communications, Inc. (Nasdaq: -), a leading provider of optical Ethernet access solutions, today announced that newly certified MRV gold partner, CBM of America, will market and sell the MRV NEBS certified LX-8000 series of console servers, an industry first, to the carrier marketplace...
About LuminentOIC LuminentOIC is a wholly owned subsidiary of MRV Communications (Nasdaq:) and a world-class, leading edge manufacturer of optical components since 1988.
news.surfwax.com /biz/files/MRV_Communications.html   (161 words)

  
 Fiber optic termination products, fiber optic training, field and consulting services, fiber optic termination tools and tool kits, fiber optic consumables, and specialized fiber optic cable assemblies, for both commercial and military communications
Breakout cable design with an individual color coded sub-cable surrounding each optical fiber.
We provide Commercial Off-The-Shelf (COTS) optical cabling part of our overall cost-effective and short lead-time connectivity solutions.
Optical Assemblies Available for Military and Aerospace Applications
www.connectworld.net /fiber   (251 words)

  
 nerdbooks.com - Digital Communications Systems: With Satellite and Fiber Optics Applications (ISBN: 0130815438)
All Sections > Engineering > Communications > Optical
Chapter 10: Optical Fiber Communications Systems Analysis And Design
For practicing Digital Communications engineers, engineers in other disciplines intending to enter the Digital Communications field, Scientists, Technical Managers, and Technologists.
www.nerdbooks.com /item.php?id=0130815438   (251 words)

  
 Feeding system and feeding method for a submarine cable communication system - Patent 5334879
The submarine branching unit 81 has a switching circuit 80 for switching, when a fault occurs on or in one of the optical submarine communication cables among the feed lines 4.sub.1, 4.sub.2, and 4.sub.3 so as to continue communication through communication cables which have not experienced a fault.
When a fault occurs on one of the optical submarine communication cables, it is not necessary to supply power to a repeater provided on the optical submarine communication cable on which the fault has occurred.
As another aspect of the feeding method in a submarine cable communication system according to the third embodiment of the present invention, the feed line switching circuits in the submarine branching units are sequentially operated in the order from the submarine branching unit side having a smaller current threshold to switch the feed line.
www.freepatentsonline.com /5334879.html   (8480 words)

  
 Communication cables
Borstar® HE6068 is a natural jacketing developed for jacketing optical fibre submarine cables.
ADSS (All Dielectric Self Supporting) optical cables are used when optical cables are installed in high voltage over-head line systems.
Low-shrink jackets with excellent toughness and processability are essential for communication cables.
www.borealisgroup.com /public/customer/wire_and_cable/telecommunications_cables/MainPage.jsp   (184 words)

  
 Publications on Optical Burst Switching
J.Y. Wei, J.L. Pastor, R.S. Ramamurthy, and Y. Tsai, "Just-in-time optical burst switching for multiwavelength networks", Proceedings of the 5th IFIP TC6 International Conference on Broadband Communications (BC '99), Hong Kong, November 1999, pp.
European Conference on Optical Communications (ECOC 2000), Workshop "Modeling and Design of Optical Networks and Systems," September 2000, Munich, paper 1.3, pg.
L. Xu, H.G. Perros, and G. Rouskas, "Techniques for optical packet switching and optical burst switching", IEEE Communications Magazine, Vol.
www.cis.umassd.edu /~vvokkarane/obs.html   (3136 words)

  
 Lucent Technologies reports sequential improvement for second fiscal quarter 2001
The deployment of a leading-edge optical networking system for NTT Communications of Japan, which will enable NTT to dramatically increase network capacity by transmitting information through a wavelength range in its fiber that it could not previously use.
Lucent also announced a letter of intent with Verizon Communications naming Lucent the supplier of optical systems, data products, software and services for Verizon's global telecommunications network.
Ireland's mobile operator, Meteor Mobile Communications, not only turned to Lucent for a GSM network, but also is relying on Lucent Worldwide Services for network planning, design, technical expertise, and maintenance as part of the $70 million Lucent deal.
www.lucent.com /press/0401/010424.coa.html   (2554 words)

  
 Communications Systems Design ERA Technology
ERA is in the forefront of the design and manufacture of the ultra wideband amplifiers used as drivers in long haul optical communications networks, and has recently completed the development of an integrated driver and optical modulator which offers considerable benefits in cost and performance.
ERA offers a comprehensive custom design and build services in radio, microwave, satellite and optical communications; producing hardware from prototypes to fully engineered products, and can also call on ERA specialists to cover important issues such as EMC, safety and reliability and regulatory compliance.
ERA can provide support in all aspects of the design of satellite communications systems from digital beamforming studies to the design, building and testing of space qualified hardware and ground station equipment.
www.era.co.uk /services/csd.asp   (193 words)

  
 Prof. Imrich Chlamtac
Chlamtac, A. Ganz, and G. Karmi, "All Optical "Lightpath" Networks: Distributed Lightpath Management", IEEE International Workshop In Microelectronics and Photonics in Communications, Cape Cod, Mass., June 1989.
Chlamtac and A. Fumagalli, "An Integrated Electro-Optical Approach to All-Optical WDM Ring Communication", 7th Annual Workshop on Computer Communications, Hilton Head, South Carolina, October 1992.
Chlamtac is known as the inventor of the lighpath concept, the basic mechanism for wavelength routing, a key optical technology for WDM networking.
www.utdallas.edu /~chlamtac   (193 words)

  
 Fujitsu Network Communications : FUJITSU Canada
Richardson, TX, September 24, 2003 – Fujitsu Network Communications Inc., the leader in the optical telecommunications market, today announced that the Rural Utilities Service (RUS) branch of the United States Department of Agriculture (USDA) has granted “Buy American” status upon the Fujitsu FLASHWAVE® 4300 next-generation multiservice optical transport platform.
Richardson, TX and Santa Clara, CA, October 13, 2003 – Fujitsu Network Communications Inc. and Entrisphere, Inc. are combining their efforts to deliver a fully-integrated, fiber-to-the-premises (FTTP), ‘triple play’ solution that provides a variety of broadband services to residential users and home offices at prices equivalent to, or less than, today’s copper-based networks.
Richardson, TX, October 9, 2003 – Fujitsu Network Communications Inc., a subsidiary of Tokyo-based Fujitsu Limited, is a leading provider of customer-focused IT and carrier-class telecommunications solutions for the Service Provider and Cable TV market in North America.
www.fujitsu.com /ca/en/news/pr/archives/subsidiary/2003/index_fnc.html   (1952 words)

  
 Hardware Analysis - Analog Devices' SoundMAX 3.0 with SPX
Intel’s CNR (Communications and Networking Riser) slots are a perfect companion for SoundMAX technology.
The riser we were equipped with featured two additional stereo minijacks, and an optical S/PDIF (Sony/Philips Digital InterFace) output.
It is certainly possible to base a design around a coaxial digital output, as opposed to an optical output, however our riser was equipped with an optical output only.
www.hardwareanalysis.com /action/printarticle/1277   (1952 words)

  
 Flight R & D
When the optical communications telescope looks back at earth for acquisition and tracking and downlink, the sun is generally in the background and at times partially within its field of view.
The NASA/JPL patented optical communications demonstrator (OCD) is a laboratory prototype development of a scalable architecture that with minor modifications could accommodate optical communications links from airborne platforms to near-earth-space-borne satellites to planetary-spacecraft.
The eventual goal is develop the ability to optically communicate across airborne platforms and from aircraft of space satellites.
lasers.jpl.nasa.gov /PAGES/flight.html   (2079 words)

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