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A tunable wavelength routing scheme based on the sum-and difference-frequency generation with double pass configuration and its applications

Yu Song Zhang Hua Shen Jing Zhang Yong-Jun Gu Wan-Yi

A tunable wavelength routing scheme based on the sum-and difference-frequency generation with double pass configuration and its applications

Yu Song, Zhang Hua, Shen Jing, Zhang Yong-Jun, Gu Wan-Yi
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  • Abstract views:  3045
  • PDF Downloads:  928
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  • Received Date:  25 November 2006
  • Accepted Date:  16 July 2007
  • Published Online:  20 February 2008

A tunable wavelength routing scheme based on the sum-and difference-frequency generation with double pass configuration and its applications

  • 1. 北京邮电大学,光通信与光波技术教育部重点实验室,北京 100876

Abstract: A tunable wavelength routing scheme based on sum- and difference- frequency generation (SFG+DFG) is proposed, where the concept of double pass configuration is employed. An arbitrary channel can be dropped from a WDM signal and added to another WDM signal at arbitrary wavelength. Therefore, the tunable wavelength conversion and wavelength routing are integrated together in this scheme. The theoretical expression of the input signal wave and the converted wave are derived under the assumption of “small signal" when the phase is matched perfectly. Numerical calculations were performed which showed that the cross-talk can be suppressed provided the spacing of the WDM channels is greater than 02nm (25GHz). If the input or output of this device is changed, this scheme can be utilized as tunable wavelength add multiplexer, tunable wavelength drop multiplexer, wide tunable wavelength filter or tunable wavelength converter. A wavelength interchange cross connection (WIXC) unit can also be realized by employing two devices of this scheme.

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