建立了多粒度光网络的阻塞率分析模型，首次考虑了多粒度节点不具备波长变换能力和具备稀疏波长变换能力两种情况；
The blocking probability analytical models for MG-OXC based optical networks are built and both scenarios without and with sparse wavelength conversion capabilities are considered for the first time.
由于技术和价格的限制，有限范围波长变换的研究和稀疏节点波长变换的研究应运而生。
The technology of manufacturing the wavelength converter with limited-range conversion range and the sparse distribution of the wavelength converter are under research.
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