Zobrazeno 1 - 10
of 418
pro vyhledávání: '"Nagatsuma Tadao"'
Publikováno v:
Nanophotonics, Vol 11, Iss 9, Pp 1741-1759 (2022)
Recent advances in silicon (Si) microphotonics have enabled novel devices for the terahertz (THz) range based on dielectric waveguides. In the past couple of years, dielectric waveguides have become commonplace for THz systems to mitigate issues in e
Externí odkaz:
https://doaj.org/article/a9084c6560eb4658867ff82772fc6bde
Autor:
Heffernan, Brendan M., Kawamoto, Yuma, Maekawa, Keisuke, Greenberg, James, Amin, Rubab, Hori, Takashi, Tanigawa, Tatsuya, Nagatsuma, Tadao, Rolland, Antoine
Future wireless communication infrastructure will rely on terahertz systems that can support an increasing demand for large-bandwidth, ultra-fast wireless data transfer. In order to satisfy this demand, compact, low-power, and low noise sources of te
Externí odkaz:
http://arxiv.org/abs/2304.02644
Autor:
Arikawa, Takashi, Kim, Jaeyong, Mukai, Toshikazu, Nishigami, Naoki, Fujita, Masayuki, Nagatsuma, Tadao, Tanaka, Koichiro
As a key component for next-generation wireless communications (6G and beyond), terahertz (THz) electronic oscillators are being actively developed. Precise and dynamic phase control of ultrafast THz waveforms is essential for high-speed beam steerin
Externí odkaz:
http://arxiv.org/abs/2209.02923
Spectral purity of any millimeter wave (mmW) source is of the utmost interest in low-noise applications. Optical synthesis via photomixing is an attractive source for such mmWs, which usually involves expensive spectrally pure lasers with narrow line
Externí odkaz:
http://arxiv.org/abs/2207.07750
Terahertz technology is largely dependent upon planar on-chip antennas that radiate downwards through the substrate, and so an effective means to interface these antennas with integrated waveguides is an attractive prospect. We present a viable metho
Externí odkaz:
http://arxiv.org/abs/2206.08184
We present a paradigm for integrated photonic devices based upon broadband slab-confined collimated beams that are launched with half-Maxwell fisheye lenses. Although it is challenging to match to the low-index focus of the lens whilst maintaining ad
Externí odkaz:
http://arxiv.org/abs/2101.11210
Autor:
Tetsumoto, Tomohiro, Nagatsuma, Tadao, Fermann, Martin E., Navickaite, Gabriele, Geiselmann, Michael, Rolland, Antoine
Optical frequency division (OFD) via optical frequency combs (OFC) has enabled a leap in microwave metrology leading to noise performance never explored before. Extending the method to millimeter-wave (mmW) and terahertz (THz)-wave domain is of great
Externí odkaz:
http://arxiv.org/abs/2009.10784
Autor:
Tetsumoto, Tomohiro, Ayano, Fumiya, Yeo, Mark, Webber, Julian, Nagatsuma, Tadao, Rolland, Antoine
Publikováno v:
Optics Letters Vol. 45, Issue 16, pp. 4377-4380 (2020)
In this letter, we experimentally demonstrate low noise 300GHz wave generation based on a Kerr microresonator frequency comb operating in soliton regime. The spectral purity of a 10GHz GPS-disciplined dielectric resonant oscillator is transferred to
Externí odkaz:
http://arxiv.org/abs/2006.09281
Akademický článek
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Autor:
Gao, Weijie, Yu, Xiongbin, Fujita, Masayuki, Nagatsuma, Tadao, Fumeaux, Christophe, Withayachumnankul, Withawat
Terahertz communications is a promising modality for future short-range point-to point wireless data transmission at rates up to terabit per second. A milestone towards this goal is the development of an integrated transmitter and receiver platforms
Externí odkaz:
http://arxiv.org/abs/1905.06559