Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Sasai, Takeo"'
Publikováno v:
Journal of Lightwave Technology, 2024
This paper presents analytical results on the accuracy of fiber-longitudinal optical power monitoring (LPM) at arbitrary positions. To quantify the accuracy, the position-wise variance and power-profile SNR of LPM are defined and analyzed, yielding f
Externí odkaz:
http://arxiv.org/abs/2410.12602
Autor:
Nishizawa, Hideki, Borraccini, Giacomo, Sasai, Takeo, Huang, Yue-Kai, Mano, Toru, Anazawa, Kazuya, Namiki, Masatoshi, Usui, Soichiroh, Matsumura, Tatsuya, Sone, Yoshiaki, Wang, Zehao, Okamoto, Seiji, Inoue, Takeru, Ip, Ezra, D'Amico, Andrea, Chen, Tingjun, Curri, Vittorio, Wang, Ting, Asahi, Koji, Takasugi, Koichi
We propose methods and an architecture to conduct measurements and optimize newly installed optical fiber line systems semi-automatically using integrated physics-aware technologies in a data center interconnection (DCI) transmission scenario. We dem
Externí odkaz:
http://arxiv.org/abs/2403.16281
Publikováno v:
Journal of Lightwave Technology, 2023
This paper presents a linear least squares method for fiber-longitudinal power profile estimation (PPE), which estimates an optical signal power distribution throughout a fiber-optic link at a coherent receiver. The method finds the global optimum in
Externí odkaz:
http://arxiv.org/abs/2310.04936
Publikováno v:
Journal of Lightwave Technology, 2023
This paper presents analytical results on longitudinal power profile estimation (PPE) methods, which visualize signal power evolution in optical fibers at a coherent receiver. The PPE can be formulated as an inverse problem of the nonlinear Schr\"odi
Externí odkaz:
http://arxiv.org/abs/2211.08128
Autor:
Nishizawa, Hideki, Sasai, Takeo, Inoue, Takeru, Anazawa, Kazuya, Mano, Toru, Kitamura, Kei, Sone, Yoshiaki, Inui, Tetsuro, Takasugi, Koichi
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 optical links. However, link parameters such as signal power profile and
Externí odkaz:
http://arxiv.org/abs/2209.02217
Autor:
Sasai, Takeo, Nakamura, Masanori, Yamazaki, Etsushi, Yamamoto, Shuto, Nishizawa, Hideki, Kisaka, Yoshiaki
In optical fiber communication, system identification (SI) for the nonlinear Schr\"odinger equation (NLSE) has long been studied mainly for fiber nonlinearity compensation (NLC). One recent line of inquiry to combine a behavioral-model approach like
Externí odkaz:
http://arxiv.org/abs/2104.05890
Autor:
Sasai, Takeo, Matsushita, Asuka, Nakamura, Masanori, Okamoto, Seiji, Hamaoka, Fukutaro, Kisaka, Yoshiaki
Publikováno v:
Journal of Lightwave Technology, Vol. 38, Issue. 2, 2020
We numerically and experimentally investigate the laser phase noise tolerance of probabilistically shaped (PS) and uniformly shaped (US) quadrature amplitude modulation (QAM) signals. In the simulations, we compare PS-64QAM to US-16QAM, PS-256QAM to
Externí odkaz:
http://arxiv.org/abs/2012.08078
Autor:
Sasai, Takeo, Nakamura, Masanori, Yamazaki, Etsushi, Matsushita, Asuka, Okamoto, Seiji, Horikoshi, Kengo, Kisaka, Yoshiaki
Publikováno v:
Optics Express, Vol. 28, Issue. 21, pp. 30952-30963, 2020
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 memoryless nonlinear function and another FIR filter. The model is a Wien
Externí odkaz:
http://arxiv.org/abs/2012.08046
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Akademický článek
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