Large nonblocking multiwavelength cross-connects based on fiber Bragg gratings for WDM networks

Yung Kung Chen; Chien-Chung Lee; Yuan-Kuang Tu; Shien-Kuei Liaw; Chi-Hsiung Chang

doi:10.1117/12.312833

19 June 1998 Large nonblocking multiwavelength cross-connects based on fiber Bragg gratings for WDM networks

Yung Kung Chen, Chien-Chung Lee, Yuan-Kuang Tu, Shien-Kuei Liaw, Chi-Hsiung Chang

Proceedings Volume 3420, Optical Fiber Communication; (1998) https://doi.org/10.1117/12.312833
Event: Asia Pacific Symposium on Optoelectronics '98, 1998, Taipei, Taiwan

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.

Citation Download Citation

Yung Kung Chen, Chien-Chung Lee, Yuan-Kuang Tu, Shien-Kuei Liaw, and Chi-Hsiung Chang "Large nonblocking multiwavelength cross-connects based on fiber Bragg gratings for WDM networks", Proc. SPIE 3420, Optical Fiber Communication, (19 June 1998); https://doi.org/10.1117/12.312833

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