Zobrazeno 1 - 10
of 102
pro vyhledávání: '"Toru Mizunami"'
Autor:
Toru Mizunami
Publikováno v:
OSA Advanced Photonics Congress (AP) 2020 (IPR, NP, NOMA, Networks, PVLED, PSC, SPPCom, SOF).
Long-period gratings in few-mode fiber were fabricated with exposure using a KrF laser. Spectral measurements on attenuation for LP01 and LP11 modes were performed with offset-launch technique. The coupling wavelengths depended on launched modes.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2c13e2eb5f26717fc60db803a47e40e
https://doi.org/10.1364/psc.2020.jtu3f.8
https://doi.org/10.1364/psc.2020.jtu3f.8
Publikováno v:
Thin Solid Films. 614:47-51
Optimization of the quasi-phase-matching (QPM) for second-harmonic generation in thermally-poled twin-hole fiber was performed by stretch of the fiber. The periodic structure for QPM was fabricated by erasure of the second-order nonlinearity by expos
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c67e917eb6a8fcdcbc8852ea4cc067d8
https://doi.org/10.1016/j.tsf.2016.04.022
https://doi.org/10.1016/j.tsf.2016.04.022
Publikováno v:
Optical Review. 23:703-707
The interrogation of fiber-Bragg-grating (FBG) sensors using a vertical-cavity surface-emitting laser (VCSEL) is discussed. A long-wavelength (1.54 μm) VCSEL was used as a wavelength-tunable source by variation in the current. Temperature stabilizat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b22bde42d0cb320ca7dbcc65e39f23b6
https://doi.org/10.1007/s10043-016-0238-2
https://doi.org/10.1007/s10043-016-0238-2
Autor:
Toru Mizunami
Publikováno v:
Journal of Laser Micro/Nanoengineering. 11:17-20
A system of passively-mode-locked figure-of-eight erbium-doped fiber laser oscillator-amplifier system was studied. Cooling the erbium-doped fiber down to 0 oC increased the output power of the oscillator to 1.8 times that of the room temperature. To
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f2df500846a003216a3a77352495359
https://doi.org/10.2961/jlmn.2016.01.0003
https://doi.org/10.2961/jlmn.2016.01.0003
Publikováno v:
Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF).
Spectral measurement for higher-order mode excitation was performed for LPGs with various grating periods. The higher-order modes by offset launch were observed using a diode laser. Attenuations for LP11 and LP21 input modes were observed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc647820c38bfb839540a754bf6372e9
https://doi.org/10.1364/bgppm.2018.jtu2a.1
https://doi.org/10.1364/bgppm.2018.jtu2a.1
Autor:
Satoshi Arahira, Toru Mizunami
Publikováno v:
Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF).
A low-cost long-period grating (LPG) sensor using a VCSEL and a photodiode was developed. LPGs with controlled wavelengths were fabricated by tilted-mask method. Temperature sensing with reduction in error was demonstrated using a pigtailed VCSEL.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73bf202b5db7b225ed0bcf68a8316e70
https://doi.org/10.1364/sensors.2018.seth1e.5
https://doi.org/10.1364/sensors.2018.seth1e.5
Publikováno v:
2017 22nd Microoptics Conference (MOC).
Spectral measurements of long-period fiber gratings (LPGs) were performed with an offset launch for higher-order mode excitation. LPGs with various grating periods were fabricated with the tilted mask method. Difference in the attenuation peaks was o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8fc0ff4813a4e22192e04e9c13b3195c
https://doi.org/10.23919/moc.2017.8244586
https://doi.org/10.23919/moc.2017.8244586
Publikováno v:
Thin Solid Films. 559:14-17
Second-harmonic generation (SHG) from a twin-hole fiber by thermal poling was studied. Quasi-phase-matching (QPM) was performed with a low-pressure mercury lamp. Erasure of the second-order nonlinearity was studied by uniform exposure, and after that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34ba95a786fd0de28a8b8ea40725334a
https://doi.org/10.1016/j.tsf.2013.10.105
https://doi.org/10.1016/j.tsf.2013.10.105
Autor:
Mamoru Minami, Toru Mizunami
Publikováno v:
Photonics and Fiber Technology 2016 (ACOFT, BGPP, NP).
Offset launch for higher-order mode excitation was performed for spectral measurement of long-period fiber gratings in the few-mode region. Attenuation peaks by coupling from LP11 mode to cladding modes were observed and compared with simulation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a65b6e67f336be0e84622349945656bd
https://doi.org/10.1364/acoft.2016.jt4a.31
https://doi.org/10.1364/acoft.2016.jt4a.31
Autor:
Toru Mizunami, Akimasa Ehara
Publikováno v:
Microelectronic Engineering. 88:2334-2337
Micromachining by ablation using a femtosecond erbium-doped fiber-laser system was studied. The system consisted of a passively mode-locked fiber-laser oscillator using a nonlinear-amplifying loop mirror, a pulse extractor, and a final amplifier. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::484ba0db572440a029f2c1fdbc3de439
https://doi.org/10.1016/j.mee.2011.02.102
https://doi.org/10.1016/j.mee.2011.02.102