Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
OFT |
2020-10-08 10:50 |
Online |
Online |
[Poster Presentation]
Design of graded-index type photonic crystal fiber with uniform air hole diameter and its application to fiber collimator Daichi Yoshihara, Hirohisa Yokota, Yoh Imai (Ibaraki Univ.) OFT2020-17 |
A graded-index (GI) type photonic crystal fiber (PCF) that has an α-power effective index distribution in radial directi... [more] |
OFT2020-17 pp.33-36 |
OFT |
2020-01-17 09:50 |
Aichi |
NINS Okazaki Conference Center |
Theoretical study of temperature/strain sensor using graded-index type photonic crystal fiber Hirohisa Yokota, Shuto Iseki, Yoh Imai (Ibaraki Univ.) OFT2019-54 |
A graded-index type photonic crystal fiber (GI-PCF) with α-power air hole diameter distribution in radial direction oper... [more] |
OFT2019-54 pp.39-42 |
OFT |
2017-10-13 09:55 |
Kochi |
Kochi Prefectural Culture Hall |
Variable Photonic Crystal Fiber Optical Attenuator Using Bending Loss Hirohisa Yokota, Tomohiko Sano, Yoh Imai (Ibaraki Univ.) OFT2017-43 |
Recently, an importance of optical attenuator has increased in fiber optic communication systems because an optical powe... [more] |
OFT2017-43 pp.23-26 |
OFT |
2017-01-20 13:55 |
Tokyo |
Kikaishinko Kaikan |
Design of Graded-Index-Type Photonic Crystal Fiber for Collimator Application with Good Tolerance in Fiber Length Error Hirohisa Yokota, Mizuki Wakabayashi, Keiichi Higuchi, Yoh Imai (Ibaraki Univ.) OFT2016-37 |
A graded-index-type photonic crystal fiber (GI-PCF) that has α-power air hole diameter distribution in radial direction,... [more] |
OFT2016-37 pp.11-14 |
OCS, OPE, OFT (Joint) [detail] |
2014-02-28 14:25 |
Okinawa |
nest HOTEL Naha |
Influence of gamma ray irradiation in reflection spectra of polarization-maintaining fiber Bragg gratings Yota Shimabukuro, Hirohisa Yokota, Yoh Imai (Ibaraki Univ.) OFT2013-77 OPE2013-237 |
It is known that changes of optical characteristics are caused in optical fibers by irradiation of radiation such as gam... [more] |
OFT2013-77 OPE2013-237 pp.121-124(OFT), pp.175-178(OPE) |
OFT |
2013-01-25 09:00 |
Tokushima |
|
Fabrication of polarization-maintaining photonic crystal fiber optical attenuator using air hole diameter control Hirohisa Yokota, Naoya Inoue, Yuto Kobayashi, Yoh Imai (Ibaraki Univ.) OFT2012-62 |
Photonic crystal fiber (PCF) optical attenuators that are fabricated by air hole diameter control have advantages such a... [more] |
OFT2012-62 pp.51-54 |
OPE, OFT |
2012-03-02 15:50 |
Tokyo |
|
Inscription of refractive index modulated gratings in tellurite fibers Hirohisa Yokota, Kyosuke Mano, Motoaki Kobayashi, Yoh Imai, Yutaka Sasaki (Ibaraki Univ.) OFT2011-83 OPE2011-209 |
We attempted to inscribe refractive index modulated gratings in tellurite fibers to suppress the power of control light ... [more] |
OFT2011-83 OPE2011-209 pp.53-56 |
OFT |
2010-10-25 15:05 |
Saitama |
Nippon Institute of Technology |
Fabrication of Photonic Crystal Fiber Attenuator with Air Hole Diameter Control Using CO2 Laser Irradiation Hirohisa Yokota, Kousuke Ushiroda, Naoya Inoue, Yoh Imai, Yutaka Sasaki (Ibaraki Univ.) OFT2010-34 |
Photonic crystal fiber (PCF) attenuators with air hole diameter control were fabricated by PCF fusion using CO_2 laser i... [more] |
OFT2010-34 pp.29-32 |
OFT |
2009-10-30 13:15 |
Oita |
|
Coupling Characteristic Adjustment of Photonic Crystal Fiber Coupler Using Air Hole Control with CO2 Laser Irradiation Hirohisa Yokota, Yuu Nakajima, Tomoya Ichige, Yoh Imai, Yutaka Sasaki (Ibaraki Univ.) OFT2009-49 |
Coupling characteristics of a photonic crystal fiber coupler (PCFC) depend on whether air holes at the tapered region of... [more] |
OFT2009-49 pp.73-76 |
OFT, OPE |
2009-03-06 15:50 |
Tokyo |
Kikai-Shinko-Kaikan Bldg |
Fabrication of Tellurite Fiber Coupler Using CO2 Laser Irradiation Yusuke Nakamura, Motoaki Kobayashi, Hirohisa Yokota (Ibaraki Univ.), Atsushi Mori (NTT), Yutaka Sasaki (Ibaraki Univ.) OFT2008-98 OPE2008-198 |
For the practical all-optical switching application of an optical fiber grating coupler (FGC), in which refractive index... [more] |
OFT2008-98 OPE2008-198 pp.63-66 |
OFT, OCS, ITE-BCT, IEE-CMN (Joint) [detail] |
2008-11-21 09:35 |
Oita |
|
Connection of Photonic Crystal Fiber and Single-Mode Fiber with Fused Coupler Forming Hirohisa Yokota, Hirotomo Yashima, Yoh Imai, Yutaka Sasaki (Ibaraki Univ.) OFT2008-61 |
A fused fiber coupler forming with a photonic crystal fiber (PCF) and a single-mode fiber (SMF) as a solution of their c... [more] |
OFT2008-61 pp.77-80 |
OCS, OFT, ITE-BCT, IEE-CMN (Joint) [detail] |
2007-11-21 15:25 |
Osaka |
|
Designs and fabrications of photonic crystal fiber couplers with air hole controlled taper regions Hirohisa Yokota, Hiroki Kawasiri, Hirotomo Yashima, Yutaka Sasaki (Ibaraki Univ.) OFT2007-42 |
Coupling characteristics of photonic crystal fiber couplers (PCFCs) were theoretically investigated. In PCFCs with air h... [more] |
OFT2007-42 pp.17-21 |
OCS, OFT |
2004-08-26 14:45 |
Hokkaido |
Muroran Institute of Technology |
Designs and fabrications of photonic crystal fiber couplers Hirohisa Yokota, Yoshihiro Kobayashi, Masahiro Hirajo, Takao Nishida, Yutaka Sasaki (Ibaraki Univ.) |
Since photonic crystal fibers (PCFs), that consist of silica cores and distributed air hole silica claddings, can produc... [more] |
OCS2004-62 OFT2004-25 pp.53-56 |