A New Wavelength Assignment Algorithm in an Optical Unidirectional Ring with Realistic Wavelength Conversion

Seungkwon CHO  Changhwan OH  

IEICE TRANSACTIONS on Communications   Vol.E84-B   No.8   pp.2301-2304
Publication Date: 2001/08/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Fiber-Optic Transmission
wavelength assignment,  WDM,  sparse wavelength conversion,  limited wavelength conversion,  

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Wavelength converters are usually used for improving the performance of WDM optical networks. From the viewpoint of network economics and current technologies, the wavelength converters with a limited conversion range are necessary to be used sparsely in real applications. However, there have been little efforts for developing wavelength assignment algorithm that achieves a guaranteed high performance with either limited or sparse wavelength conversion. In this paper, we propose a new wavelength assignment algorithm that can be applied to both sparse and limited wavelength conversion. Through the results of simulation program, we show that the proposed algorithm outperforms other ones presented until now.