Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Naoya Yazawa"'
Publikováno v:
The Journal of Chemical Physics. 157:124105
Computational analysis of difference spectra between two analogous systems is a challenging issue, as reliable estimation of a tiny difference spectrum requires an extraordinary precision of the two original spectra. We have developed an alternative
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b29b500f1394c31fe514ffb326b7f02
https://doi.org/10.1063/5.0108934
https://doi.org/10.1063/5.0108934
Publikováno v:
IEEE Photonics Technology Letters. 28:1438-1441
We demonstrate quadrature phase-shift keying (QPSK) modulation and four-level pulse-amplitude modulation (4-PAM) in Si Mach-Zehnder modulators whose phase shifter length is reduced to 300 μm by the slow-light effect in photonic crystal lattice-shift
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca776d8a219d4f465fca70891f56f903
https://doi.org/10.1109/lpt.2016.2544848
https://doi.org/10.1109/lpt.2016.2544848
Publikováno v:
Optics express. 23(16)
We propose and demonstrate an on-chip optical correlator, in which two types of photonic crystal slow-light waveguides are integrated and operated as an optical delay scanner and a two-photon-absorption photodetector. The footprint of the device, whi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::651caf9784487f47c525b226a05d6c29
https://pubmed.ncbi.nlm.nih.gov/26367929
https://pubmed.ncbi.nlm.nih.gov/26367929
Publikováno v:
2015 11th Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR).
We fabricated Si QPSK and PAM modulators with photonic crystal slow light waveguides and interleaved p/n junction, both of which have footprints less than 1 mm2. 30–35 Gbps operation were observed in 300–450 μm devices.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60f561b2098c68deca927d0cede8d301
https://doi.org/10.1109/cleopr.2015.7376069
https://doi.org/10.1109/cleopr.2015.7376069
Publikováno v:
CLEO: 2015.
25 Gbps error-free operation and 16-nm working spectrum were obtained in 200-μm photonic crystal slow light MZ OOK modulators. QPSK modulation was also obtained in a 300-μm device (1.0 × 0.5 mm2 footprint).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::96158f9416463a13456db148cf3b84b5
https://doi.org/10.1364/cleo_si.2015.sw3n.4
https://doi.org/10.1364/cleo_si.2015.sw3n.4
Autor:
Yosuke Terada, Toshihiko Baba, Satoshi Hashimoto, Naoya Yazawa, Tomohiko Watanabe, Hong C. Nguyen
Publikováno v:
Science and Technology of Advanced Materials
Science and Technology of Advanced Materials, Vol 15, Iss 2, p 024602 (2014)
Science and Technology of Advanced Materials, Vol 15, Iss 2, p 024602 (2014)
Mach–Zehnder optical modulators are the key devices for high-speed electrical-to-optical conversion in Si photonics. Si rib waveguides with a p–n diode structure operated in the carrier depletion mode have mainly been developed as their phase shi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::93d9a76b969393100acaf55399e4171b
http://europepmc.org/articles/PMC5090409
http://europepmc.org/articles/PMC5090409
Publikováno v:
2013 Conference on Lasers and Electro-Optics Pacific Rim (CLEOPR).
We optimized the 10 Gb/s operation in Si photonic crystal optical modulators with 50-200 μm long phase shifters. By incorporating additional phase tuners, we obtained over 10 dB extinction ratio and error-free operation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7333e88f72ee68ee1322c247f7208c5c
https://doi.org/10.1109/cleopr.2013.6600441
https://doi.org/10.1109/cleopr.2013.6600441
Publikováno v:
2013 Conference on Lasers and Electro-Optics Pacific Rim (CLEOPR).
Using all technologies of photonic crystal, slow light and Si photonics, we first fabricated an on-chip optical correlator whose footprint is only 2.08 × 0.3 mm2. Picosecond pulse waveform was successfully measured with this device.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f99a7f859dc243cc70f2ba8bdd85400
https://doi.org/10.1109/cleopr.2013.6599950
https://doi.org/10.1109/cleopr.2013.6599950
Publikováno v:
2013 Conference on Lasers and Electro-Optics Pacific Rim (CLEOPR).
We demonstrate athermal operation at 10 Gb/s, across 19-124°C, in a 90 μm Si photonic crystal optical modulator. This is enabled by low-dispersion slow-light and the resulting 17.9 nm spectral operating bandwidth.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5172e016e801933c04ddb9e0ed70a8ff
https://doi.org/10.1109/cleopr.2013.6600261
https://doi.org/10.1109/cleopr.2013.6600261
Electrically-controlled photonic crystal slow light device and its application to optical correlator
Autor:
Mizuki Shinkawa, Naoya Yazawa, Hong C. Nguyen, Ryo Hosoi, Ryo Hayakawa, Toshihiko Baba, Norihiro Ishikura
Publikováno v:
SPIE Proceedings.
Lattice-shifted photonic crystal waveguides (LSPCWs) are effective for generating wide-band on-chip slow light at room temperature. In this study, we integrated the LSPCW with multi-heaters using CMOS-compatible process, and demonstrated electrically
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::619be16d8b3f1c0f52eda09b79a18673
https://doi.org/10.1117/12.2003624
https://doi.org/10.1117/12.2003624