Výsledky vyhledávání

Distributed Deep Learning With GPU-FPGA Heterogeneous Computing

Autor: Tsuyoshi Ito, Naru Nemoto, Yuki Arikawa, Tanaka Kenji, Takeshi Sakamoto, Kazutaka Morita, Kazuhiko Terada, Junji Teramoto

Publikováno v: IEEE Micro. 41:15-22

In distributed deep learning (DL), collective communication algorithms, such as Allreduce, used to share training results between graphical processing units (GPUs) are an inevitable bottleneck. We hypothesize that a cache access latency occurred at e

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b2263e3d6ac1b006b393574c85fe0003
https://doi.org/10.1109/mm.2020.3039835

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Filter-free Color Image Sensors with a Full-color-sorting Metalens Array

Autor: Masashi Miyata, Hironari Takehara, Kota Shikama, Naru Nemoto, Jun Ohta, Toshikazu Hashimoto

Publikováno v: Conference on Lasers and Electro-Optics.

We present a filter-free color image sensor utilizing a full-color-sorting metalens array. Our demonstration shows the sensor’s ability to create high-quality color images while enhancing pixel-signal levels compared with those of conventional imag

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e976c8dc79440120d6f17cc5aa2908d3
https://doi.org/10.1364/cleo_qels.2022.fm1b.8

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Wavelength Selective Switches for SDM Photonic Nodes Based on SPOC Platform

Autor: Kazunori Seno, Naru Nemoto, Yutaka Miyamoto

Publikováno v: OFC

We overview wavelength selective switches (WSSs) for space-division multiplexing (SDM) nodes. The space and planar optical circuit (SPOC) platform is suitable for integration of multiple WSSs into a single module, which is suitable for SDM systems.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::68ba2c9a3b05bf5d6d793a45fc44555b
https://doi.org/10.1364/ofc.2021.w1a.5

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Color Splitting Micro-metalenses for High-sensitivity Color Image Sensors

Autor: Naru Nemoto, Fumihide Kobayashi, Masashi Miyata, Kota Shikama, Toshikazu Hashimoto

Publikováno v: Conference on Lasers and Electro-Optics.

We demonstrate polarization-independent micro-metalenses that sort primary colors within a high-density-pixel footprint. We also show their potential applicability to high-sensitivity color image sensors.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ac8cdcb6d3318d4cacda1977a070c1ef
https://doi.org/10.1364/cleo_qels.2021.ftu2m.5

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Full-color-sorting metalenses for high-sensitivity image sensors

Autor: Toshikazu Hashimoto, Masashi Miyata, Kota Shikama, Naru Nemoto, Fumihide Kobayashi

Publikováno v: Optica. 8:1596

Image sensors play a critical role in current technologies ranging from smartphones to autonomous vehicles. In these technologies, high-sensitivity image sensors are highly desired because they enable dark-scene/ultra-fast imaging. Unfortunately, a c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dad7f91ce8e66b7052491a88c31eebb5
https://doi.org/10.1364/optica.444255

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Low-Loss Transponder Aggregator Using Spatial and Planar Optical Circuit

Autor: Yuichiro Ikuma, Tetsuo Takahashi, Etsu Hashimoto, Kenya Suzuki, Naru Nemoto, Osamu Moriwaki

Publikováno v: Journal of Lightwave Technology. 34:67-72

We propose a compact transponder aggregator (TPA) consisting of a wavelength selective switch (WSS) array and a direction switch array. It has no intrinsic splitting loss and therefore the number of ports can exceed that of a conventional multicast s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b9c1c698aeb1c859636b4b818470097b
https://doi.org/10.1109/jlt.2015.2464673

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