然后，在光接收器处提供一些装置，以便发现并锁定发送过来的WDM信号的漂移波长栅格，这之后对发送过来的WDM信号进行多路分配以便于OE转换。

Means are then provided at an optical receiver to discover and lock onto floating wavelength grid of transmitted WDM signals and thereafter demultiplex the transmitted WDM signals for OE conversion.

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