written like an advertisement . please help improve it by removing promotional content and inappropriate external links and by adding encyclopedic content written from a neutral point of view . february 2012 learn how and when to remove this template message d lightsys industry defence space telecommunication transport founded 2002 founder mathias pez and fran ois quentel headquarters aubervilliers france owner radiall website www.d lightsys.com d lightsys a radiall company designs and manufactures high performance optical interconnect products for severe environment applications . d lightsys products are based on optoelectronic components . the company headquarters are located in aubervilliers near paris france . products are manufactured in isle d abeau near lyon and are sold through the radiall sales network under the d lightsys brand . contents 1 history 2 research 2.1 point to point vcsel based free space optical data link 2.2 high throughput optical interconnect technology 2.3 spatiotemporal and thermal analysis of vcsel 2.4 vhdl ams model 3 references 4 external links history edit in 2002 d lightsys won the french award for the most innovative high tech start up . citation needed it was founded that year by mathias pez and fran ois quentel two fiber optic interconnection specialists who previously worked for the thales group advanced research center . on april 15 2005 radiall announced its acquisition of a 40 % stake in d lightsys on january 8 2008 radiall announced an increase in its shareholdings of the start up d lightsys to 95 percent . research edit many products use vertical cavity surface emitting laser vcsel technology . point to point vcsel based free space optical data link edit d lightsys considers free space optical links for intermediate communication distances ranging from a few centimeters to one or two meters . in a 2006 paper they presented the initial simulations and the first experimental characterizations of a vcsel based point to point free space interconnect on distances ranging from 16 cm to 40 cm targeting bit rates up to 10 gbit s. 1 high throughput optical interconnect technology edit alcatel space and the cnes have investigated 2 optical interconnects as an enabling technology that may offer the high throughput data communication capabilities required to the future on board processors and digital equipment . d lightsys cooperated on this research with the development of the optoelectronic modules . spatiotemporal and thermal analysis of vcsel edit high speed optoelectronic modules using vcsel coupled to multi mode optical fibers are used for 10 gigabit ethernet in short distance optical links . a complete model of the spatiotemporal behavior of multimode vcsels through static and dynamic response noise thermal effects and its coupling to mmf has been investigated . the two founders of d lightsys took part in this study . 3 relative intensity noise shows modal dependence and can be affected by spatial filtering due to coupling and fiber propagation . simulations permit to evaluate critical parameters such as modulation formats launching conditions and operating temperature for global bandwidth and eye diagram optimization up to 10 gbit s. simulation results are compared to measurements on prototype optoelectronic modules . vhdl ams model edit in a 2004 study 4 in which matthias pez of d lightsys contributed is presented a methodology based on vhdl ams modeling for taking into account the thermal effects of an optical emission module combined with electronic and optic behavior . the thermal transfer is due to the self heating on one side and the interaction between the components of the other side . this methodology is implemented and simulated with advancems . references edit v. foucal ; f. quentel ; m. pez ; c. claudepierre ; g. barbary ; c. hartmann ; p. twardowski ; p. meyrueis april 21 2006 . point to point vcsel based free space optical data link for board to board communications . micro optics vcsels and photonic interconnects ii fabrication packaging and integration . spie . doi 10.1117 12.663072 . cs1 maint uses authors parameter link high throughput optical interconnect technology for future on board digital processors spatiotemporal and thermal analysis of vcsel for short range gigabit optical links vhdl ams model of a vcsel emission module with thermal effects external links edit d lightsys web site reuters press release gigoptix and d lightsys optical interconnects to be used on airbus military a400m retrieved from https en.wikipedia.org w index.php title d lightsys & oldid 743236566 categories fiber optic connectorscompanies of francehidden categories cs1 maint uses authors parameterarticles with a promotional tone from february 2012all articles with a promotional toneall articles with unsourced statementsarticles with unsourced statements from february 2012 navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages add links this page was last modified on 8 october 2016 at 18 00 . text is available under the creative commons attribution sharealike license ; additional terms may apply . by using this site you agree to the terms of use and privacy policy . wikipedia is a registered trademark of the wikimedia foundation inc. a non profit organization . privacy policy about wikipedia disclaimers contact wikipedia developers cookie statement mobile view