The 160 wavelengths are arranged with 50GHz equal channel spacing. The rapid growth of Internet traffic on a global scale has accelerated the development of new DWDM technologies. NEC has also developed a 40Gbps optical receiver using GaAs Hetero Bipolar Transistor ICs. The new device is four times faster than conventional 10Gbps receivers in transmission speed per wavelength. Parts of this project were supported by the Telecommunications Advancement Organization of Japan.
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