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Proceedings Paper

Large nonblocking multiwavelength cross-connects based on fiber Bragg gratings for WDM networks
Author(s): Yung Kung Chen; Chien-Chung Lee; Yuan-Kuang Tu; Shien-Kuei Liaw; Chi-Hsiung Chang
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Paper Abstract

Multi-wavelength cross-connects (WXCs) will play a key role to provide more reconfiguration flexibility and network survivability in wavelength-division-multiplexing (WDM) transport networks. In this paper, we utilize three different fiber-Bragg-grating (FBG) based P-type, S-type, and N-type building blocks with optical circulators and related control devices for constructing large rearrangeably non-blocking N X N WXCs. The P-type building block is composed of certain 'parallel' FBG-element chains placed between the control device of two large mechanical optical switches (OSWs). The S-type building block consists of a 'series' of FBG elements and the control device of 2 X 2 OSWs. The non-switched N-type building block includes a 'series' of FBG elements with appropriate stepping motor or PZT control devices. Large N X N WXC structures, with minimum number of required constitutive elements, based on a three-stage Clos network are then constructed. We investigate their relevant characteristics, compare the required constitutive elements, and estimate the dimension limits for these WXC architectures.

Paper Details

Date Published: 19 June 1998
PDF: 8 pages
Proc. SPIE 3420, Optical Fiber Communication, (19 June 1998); doi: 10.1117/12.312833
Show Author Affiliations
Yung Kung Chen, National Sun Yat-Sen Univ. (Taiwan)
Chien-Chung Lee, Chunghwa Telecom Labs. (Taiwan)
Yuan-Kuang Tu, Chunghwa Telecom Labs. (Taiwan)
Shien-Kuei Liaw, National Chiao-Tung Univ. (Taiwan)
Chi-Hsiung Chang, National Sun Yat-Sen Univ. (Taiwan)


Published in SPIE Proceedings Vol. 3420:
Optical Fiber Communication
Winston I. Way; Franklin F. Tong; Alan Eli Willner, Editor(s)

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