NDLI: Next Generation Optical Networks and New Services: an Operator's Point of View

Content Provider	IEEE Xplore Digital Library
Author	Ehrhardt, A.
Copyright Year	2007
Description	Author affiliation: T-Syst. Enterprise Services, Berlin (Ehrhardt, A.)
Abstract	The optical network must be suitable for new services with high quality of service and high availability offered by network operators. Private and business customers demand more and more triple play services. In the access domain the optical fibre will directly reach the buildings to satisfy the customers' demand on data rates and quality of the service with high flexibility and short provisioning time. Customer data rates directly influence on the transmission capacity of the links and require flexibility of the transport network. Classical optical networks in the backbone are based on fixed WDM transmission links with point-to-point configuration. Dense WDM systems (DWDM) for high capacity links coexist with Coarse WDM systems (CWDM) for cost effective links. The link data rate of the WDM channels is either 2.5 Gbit/s or 10 Gbit/s. But the next step of the network migration is the introduction of 40 Gbit/s channels. The 10 Gbit/s links must be suitable for implementation of 40 Gbit/s without any changes of the link design to minimise capex and opex. For more flexibility of the network reconfigurable OADM will be inserted in the links and network nodes. Thus the maximum transparency length can be increased but network operators have to take into account limiting physical effects like PMD, chromatic dispersion and spectral characteristics of the cascaded OADM while extending transmission speed of the channels up to 40 Gbit/s. The transport hierarchy of the network migrates from classical SDH-infrastructure to OTH-infrastructure with completely new features satisfying future network requirements. An automatically switched network supports flexibility and the necessary bandwidth can be provided to the customers on demand.
Starting Page	323
Ending Page	326
File Size	292888
Page Count	4
File Format	PDF
ISBN	142441248X
DOI	10.1109/ICTON.2007.4296099
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-07-01
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Next generation networking Optical fiber networks Wavelength division multiplexing Optical add-drop multiplexers Quality of service Availability Optical fibers Spine Costs Chromatic dispersion OTH next generation optical networks new services WDM 40 Gbit/s transmission control plane
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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