Results 171 to 180 of about 5,452 (212)

Manufacturing of lasers for DWDM systems

SPIE Proceedings, 1999
The evolution of dense wavelength division multiplexing (DWDM) has allowed service provides a convenient and cost effective method to dramatically increase transmission capacity over existing and new fiber network systems. As the demand for bandwidth continues to increase, systems designers are responding by increasing both the number of channels and ...
Kevin T. Campbell, Alexander J. Robertson, Jr., Steven J. Wetzel   +2 more
openaire   +1 more source

Overview of DWDM/ODC Project

Fiber and Integrated Optics, 2005
This article introduces the main achievements resulting from the DWDM/ODC project. The five areas of research activity within the DWDM/ODC project cover some of the main issues of design and development of dense wavelength division multiplexing systems for transparent optical networks.
ADOLFO V. T. CARTAXO, JOÃO L. REBOLA, NATAŠA B. PAVLOVIĆ, PEDRO M. A. CHARRUA, DANIEL D. T. FONSECA, JOSÉ A. P. MORGADO, RUBEN S. LUÍS, MÁRIO R. G. LEIRIA   +7 more
openaire   +1 more source

Engineering DWDM Systems

2009
This chapter contains sections titled: Introduction ITU-T Nominal Center Frequencies Channel Capacity, Width, and Spacing Channel Bit Rate and Modulation Wavelength Management Multichannel Frequency Stabilization Channel Performance Channel Dispersion Power Launched Optical Amplification Fiber Type as the Transmission Medium Optical Power ...
openaire   +1 more source

Monolithically integrated DWDM receiver

IEE Proceedings J Optoelectronics, 1993
A grating spectrometer integrated monolithically in the InGaAsP system with a photodiode array for a dense WDM system is presented for the 1.5 μm wavelength region. The chip provides more than 30 wavelength channels with a spacing of 4 nm, a channel crosstalk of approximately −15 dB, an internal photodiode efficiency of 90% and a photodiode capacitance
C. Cremer, N. Emeis, M. Schier, G. Heise, G. Ebbinghaus   +4 more
openaire   +1 more source

DWDM technology and ASON

2020
DWDM (Dense Wavelength Division Multiplexing) system which is the main point for telecommunication networks; evolved rapidly day by day. In this thesis, DWDM systems are analysing with new technologies and also evaluating some parameters like dispersion parameter with real measurements.
openaire   +2 more sources

DWDM core transport technology

14th Annual International Conference on Wireless and Optical Communications, 2005. WOCC 2005, 2005
Summary form only given. Dense wavelength division multiplexing (DWDM) transmission systems have been used in commercial networks to transport massive data over long distances. The majority of the backbone DWDM systems that are deployed today are point-to-point with limited reach and capacity.
Y.-H. Kao, J.J. Benson
openaire   +1 more source

Designing Hybrid SONET and DWDM Networks

IEEE Communications Magazine, 2006
To take full advantage of SONET granularity and DWDM capacity, the two technologies must be combined to enable deployment of the most economic transport networks. The emergence of integrated SONET and DWDM platforms is also part of the effort to build a hybrid network to achieve this objective.
openaire   +1 more source

On Multiplexing Optimization in DWDM Networks

Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2011, 2011
We propose a novel graph model for multiplexing optimization in optical networks and evaluate the performance of several multiplexing policies. Simulation shows that our advocated multiplexing policy can provide significant network cost savings.
Dong Shen, Guangzhi Li, Angela Chiu, Dah-min Hwang, Dahai Xu, Dongmei Wang, Chun-Kit Chan, Robert Doverspike   +7 more
openaire   +1 more source

A method to design DWDM filters on photonic crystals

Proceedings of the 2004 11th IEEE International Conference on Electronics, Circuits and Systems, 2004. ICECS 2004., 2005
A new very promising technology for dense wavelength division multiplexing (DWDM) systems seems to be the photonic crystals with forbidden bandgap (photonic band-gap, PBG). In this paper, we propose a method for the design of DWDM filters on PBG, based on a new model developed by the authors and already described.
A. Giorgio, R. Diana, A. G. Perri
openaire   +1 more source

การจัดสรรความจุสำรองสำหรับความอยู่รอดของโครงข่าย DWDM ที่รองรับทราฟฟิกแบบมัลติคาสต์โดยอัลกอริทึมฮิวริสติกบนพื้นฐานของการค้นหาแบบทาบู

วิทยานิพนธ์ฉบับนี้นำเสนออัลกอริทึมฮิวริสติกบนพื้นฐานของการค้นหาแบบทาบูสำหรับการจัดสรรความจุสำรองในโครงข่ายมัลติคาสต์แบบมัลติเพลกซ์เชิงความยาวคลื่นหนาแน่นเพื่อให้สามารถปกป้องความเสียหายหนึ่งข่ายเชื่อมโยงได้ โดยได้พิจารณากลยุทธการปกป้องสองประเภทคือ LR (Light-Tree Reconfiguration) และ LIR (Light-Free-Interrupted Reconfiguaration) กับระบบที่มีการใช้และไม ...
openaire   +1 more source