• NTT Innovative Photonic Network Center

    NTT Innovative Photonic Network Center

    Toward a Scalable Optical Network Achieving a Link Capacity Greater Than 1 Petabit per Second

    About Centers

    The Innovative Photonic Network Center (IPC) aims to establish the following three base technologies toward a scalable optical transport network having petabit-class link capacity to accommodate increases in traffic driven by the spread of smartphones and the expansion of cloud services.


    At IPC, we will conduct our research while collaborating with NTT Device Technology Laboratories on base technologies for optical devices and with NTT Access Network Service Systems Laboratories on base technologies for optical-fiber design.

    NTTイノベイティブフォトニックネットワークセンタ

    ① Large-scale digital signal processing technology for optical communications and photonics-electronics convergence/integration technology

    With a view to a long-distance and large-capacity optical network, we aim to break through the limits on optical transmitter/receiver modulation speeds through the convergence of digital signal processing technology and high-speed optical analog front-end integration technology to achieve high-speed digital coherent optical transmission of the multi-terabit/s class per wavelength.

    光通信用大規模デジタル信号処理技術・光電気融合集積技術

    ② Wideband and low-noise optical amplification/repeater technology

    Using wideband lumped signal amplification and optical signal processing functions employing a periodically poled lithium niobate (PPLN) waveguide-type optical parametric amplifier (OPA), we aim to overcome the noise characteristics and transmission-band limits of the conventional optical amplification/repeater method using an erbium doped-fiber amplifier (EDFA). In this way, we will develop a multiband ultra-wideband/low-noise wavelength division multiplexing (WDM) optical transmission system that makes the most of the low-loss band (communication wavelength band) of optical fiber exceeding 10 THz.

    極低雑音光増幅SN比向上基盤技術

    ③ Space-division-multiplexing optical transmission technology

    By cultivating the spatial degree of freedom in optical fiber such as cores and spatial modes and establishing space-division-multiplexing (SDM) optical transmission base technology to accommodate signals efficiently, we aim to overcome existing physical limitations in the transmission capacity of optical fiber and achieve an optical network with a link capacity of one petabit per second.

    光通信用大規模デジタル信号処理技術・光電気融合集積技術

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