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日本Tokai的NTT光电技术实验室的研究人员论证了可用于光远程通信的1010信道滤波器，他们相信这将使超高密度网络成为可能。去年六月份的IEEE PhotonicsTechnology Letters报道了该装置。他们将10个10GHz信道间距的1×160阵列波导光栅与一个1THz信道间距的1×10阵列波导光栅相
Researchers at the NTT Optoelectronics Laboratory in Tokai, Japan, demonstrated 1010 channel filters that could be used for optical telecommuting, believing it would make ultra-dense networks possible. The device was reported by IEEE Photonics Technology Letters last June. They put 10 1 × 160 arrayed waveguide grating with 10GHz channel spacing and 1 × 10 arrayed waveguide grating with 1THz channel spacing