49 citations · 76 across the 4 of their papers we have counts for
4 papers
Dynamic optical path provisioning for alien access links: architecture, demonstration, and challenges
Hideki Nishizawa, Takeo Sasai, Takeru Inoue +6
With the spread of Data Center Interconnect (DCI) and local 5G, there is a growing need for dynamically established connections between customer locations through high-capacity opt…
Physics-oriented learning of nonlinear Schrödinger equation: optical fiber loss and dispersion profile identification
Takeo Sasai, Masanori Nakamura, Etsushi Yamazaki +3
In optical fiber communication, system identification (SI) for the nonlinear Schrödinger equation (NLSE) has long been studied mainly for fiber nonlinearity compensation (NLC). One…
Laser Phase Noise Tolerance of Uniform and Probabilistically-shaped QAM Signals for High Spectral Efficiency Systems
Takeo Sasai, Asuka Matsushita, Masanori Nakamura +3
We numerically and experimentally investigate the laser phase noise tolerance of probabilistically shaped (PS) and uniformly shaped (US) quadrature amplitude modulation (QAM) signa…
Wiener-Hammerstein model and its learning for nonlinear digital pre-distortion of optical transmitters
Takeo Sasai, Masanori Nakamura, Etsushi Yamazaki +4
We present a simple nonlinear digital pre-distortion (DPD) of optical transmitter components, which consists of concatenated blocks of a finite impulse response (FIR) filter, a mem…