Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Yohei Aikawa"'
Autor:
Yohei Aikawa, Hiroyuki Uenohara
Publikováno v:
Electronics Letters, Vol 60, Iss 21, Pp n/a-n/a (2024)
Abstract Pattern recognition of optical label is utilized not only in packet switches but also in the field of data security due to its wide range of applications. In particular, pattern recognition using waveguide devices is highly valued because it
Externí odkaz:
https://doaj.org/article/696f5989bd4f43aaac6862f832ad966b
Autor:
Yohei Aikawa, Hiroyuki Uenohara
Publikováno v:
IET Optoelectronics, Vol 17, Iss 5, Pp 214-219 (2023)
Abstract Optical digital‐to‐analog converters (DACs) are key to overcoming the enormous power consumption caused by the slowdown of Moore's Law. In previous work, an optical DAC consisting of a signal generator and an intensity converter was pres
Externí odkaz:
https://doaj.org/article/bbc6b8fd6b034b79ad731803b5c36bd2
Autor:
Yohei Aikawa
Publikováno v:
IET Optoelectronics, Vol 16, Iss 4, Pp 188-194 (2022)
Abstract All‐optical likelihood calculation has the potential to improve the performance of operating speed and power consumption in future communication systems. The author previously proposed a novel scheme of likelihood calculation, which is cap
Externí odkaz:
https://doaj.org/article/4a47f2ae9ec84d5eb8f1e03fd67ce67b
Autor:
Yohei Aikawa
Publikováno v:
IEEE Photonics Journal, Vol 11, Iss 3, Pp 1-10 (2019)
Optical comparators have the potential to improve the operational speed and power consumption of optical communication systems, as they directly perform the required operations in the optical domain to avoid any optic-electro conversions. Various com
Externí odkaz:
https://doaj.org/article/3a184e7f9e574186acc08a7c1f4a7462
Autor:
Yohei AIKAWA
Publikováno v:
IEEE Photonics Journal, Vol 10, Iss 2, Pp 1-11 (2018)
In this paper, a novel optical comparison operation for phase-shift keying (PSK) modulated signal has been proposed by using optical delayed interferometer to realize an advanced functional component for future optical network. The feasibility of the
Externí odkaz:
https://doaj.org/article/66ee94e24bb849d6bd12ced986eedeb8
Autor:
Yohei Aikawa, Hiroyuki Uenohara
Publikováno v:
IEEE Photonics Journal, Vol 8, Iss 2, Pp 1-11 (2016)
In this paper, we propose an optical forward-error-correction (FEC) coding scheme with convolutional code using four-wave mixing (FWM) in a highly nonlinear fiber (HNLF) to realize an adaptive coding scheme corresponding to the signal-to-noise ratio
Externí odkaz:
https://doaj.org/article/bfae32d26fb24852b4fe0e61469194c2
Autor:
Yohei Aikawa
Publikováno v:
Applied Sciences, Vol 8, Iss 9, p 1440 (2018)
An all-optical comparator is desirable to realize large-capacity, fully-transparent, and energy-efficient communication systems, as it is considered to be a fundamental component to perform most of the operations, including packet switching, label re
Externí odkaz:
https://doaj.org/article/176825f8aa164a10be64e0b9854a15cb
Autor:
Yohei Aikawa, Hiroyuki Uenohara
Publikováno v:
IET Optoelectronics. 14:22-29
This study has given the investigation for achievable net coding gain (NCG) of optical forward error correction (FEC) coding scheme with convolutional code to control the received sensitivity following a required signal-to-noise ratio in the communic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8fa994b5486ec1b79662461de8496e4a
https://doi.org/10.1049/iet-opt.2019.0029
https://doi.org/10.1049/iet-opt.2019.0029
Autor:
Yohei Aikawa
Publikováno v:
Electronics Letters. 56:830-832
An integrated optical digital-to-analogue (DA) converter, which is intended for a phase-shift keying (PSK) modulation signal, is presented to realise a fully transparent optical communication system. The converter is provided with a silicon-based opt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7adaf9f939d5c13ca9fd92af49715173
https://doi.org/10.1049/el.2020.0950
https://doi.org/10.1049/el.2020.0950
Autor:
Yohei Aikawa, Hiroyuki Uenohara
Publikováno v:
IEEE Photonics Technology Letters. 29(No. 1):165-168
In this letter, we experimentally demonstrated an all-optical forward error correction (FEC) coding scheme with the $(7, 5)_{8}$ convolutional code using a single signal source to compensate time-dependent noise. The proposed coding scheme was compri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::efe0caddb7adedadd96f526f036ffc3e
http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100735524
http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100735524