To: Steve M who wrote (752 ) 2/5/1998 9:55:00 AM From: MangoBoy Respond to of 6846
[Nortel Announces Longest Dispersion Compensating Grating Fibre in the World] QWST is using NT WDM hardware. mark ==== PAIGNTON, UK, Feb. 5 /PRNewswire/ - Nortel (Northern Telecom) today revealed its latest technology success story with the announcement of what is believed to be the longest Dispersion Compensating Grating (DCG) for fibre optic networks in the world at 2.4 meters. This innovative addition to Nortel's optical network components portfolio provides an economical method of compensating for dispersion in installed single-mode fibre. The enormous growth rate of data in commercial and domestic networks forces an ever increasing demand for capacity on to the backbone network. With the recent expansion in line rate to 10 Gbit/s and the realisation of optical amplification, the limitation for information throughput is now dispersion rather than loss. The grating offers an alternative to tens of kilometres of Dispersion Compensating Fibre (DCF) which is a speciality fibre and therefore more expensive. Nortel's innovative solution is a more compact and lower loss device consisting of a much shorter optical fibre which has a reflective grating structure written in the core using ultra-violet laser holography. ''Our use of broadband dispersion compensators using gratings as opposed to DCF gives our customers a compact, passive and cost-effective method of maximising the full bandwidth capacity'', commented Philippe Morin, strategic director, Nortel Optoelectronics: ''This gives our customers the leading edge they need to evolve their optical networks in the way they want''. The significance of increasing the grating length to 2.4 metres is that it allows more D-WDM channels to be transmitted on the same fibre. This breakthrough was achieved at Nortel's R&D facilities in Harlow as part of the extensive optoelectronics components and systems development activity which is carried out across the Harlow and Paignton laboratories in the UK and the Ottawa site in Canada. Nortel develops and manufactures a complete range of active and passive components and low speed modules for the optical network including long haul, metro and access networking applications. SOURCE Northern Telecom Limited -0- 2/5/98 /CONTACT: Lesley Young, Nortel, 44 (0) 1803 662609; Jacques Guerette, Nortel, (613) 765-7258, jguerett@nortel.ca, Frank McNally, Nortel, (703) 712-8374, frank.mcnally@nortel.com; Or visit Nortel's web-site at nortel.com ; Nortel's press releases are also available through CNO-Call by fax at 800-758-5804, ext. 122158 or at prnewswire.com /Company News On-Call: prnewswire.com or fax 800-758-5804, ext. 122158/ /Web-site: nortel.com