全光网络指信号仅在进出网络时才进行电光和光电的变换而在网络中传输和交换的过程中始终以光的形式存在
The all-optical network means that the signal only carries on the electro-optic and photoelectric transformation when entering and leaving the network, and always exists in the form of light in the process of transmission and exchange in the network
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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