In an arrayed waveguide gratings (AWG) based optical interconnected data center, each node may receive multiple signals carried by arbitrary wavelengths, which may result into channel collision if the node is unable to separate the signals. A triple-channel reception scheme that allows each node to receive an arbitrary set of three wavelengths simultaneously (i. e. , collision-avoid) is proposed. The polarization difference between any two signals is 60°. At the reception, the combined signals are split to three polarization beam splitters (PBSs) followed by three photodetectors (PDs). Each PBS filters out one signal and the PD followed detects the other two signals. The three signals could be recovered from the detected results by arithmetic operation in electrical domain or digital domain. The proposed scheme requires no wavelength-tunable receivers or redundant receivers and enables a single node to receive signals of any set of three wavelengths simultaneously. The simulation results verify the feasibility of the proposed scheme.