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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 58  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
OCS, LQE, OPE 2023-10-20
10:10
Kochi
(Primary: On-site, Secondary: Online)
Design of Mode-evolution-based Compact Symmetric Multimode Y-junction for the 2-µm Waveband Using Shortcuts to Adiabaticity
Taichi Muratsubaki, Takeshi Fujisawa, Takanori Sato, Kunimasa Saitoh (Hokkaido Univ.) OCS2023-39 OPE2023-94 LQE2023-41
We report the design results of compact symmetric multimode Y junction for the 2-µm waveband. The proposed device achiev... [more] OCS2023-39 OPE2023-94 LQE2023-41
pp.62-67
OCS, LQE, OPE 2023-10-20
11:35
Kochi
(Primary: On-site, Secondary: Online)
Mosaic-based optical passive devices with fine circular holes deployed on closest packing structure
Takuya Mitarai (SEI/PETRA), Takeshi Fujisawa (Hokkaido Univ.), Yusuke Sawada, Takuya Okimoto, Hideki Yagi, Naoki Fujiwara (SEI/PETRA) OCS2023-42 OPE2023-97 LQE2023-44
 [more] OCS2023-42 OPE2023-97 LQE2023-44
pp.78-81
OFT 2023-05-11
16:15
Iwate Aiina(Iwate)
(Primary: On-site, Secondary: Online)
Design of uncoupled 3-mode 4-core graded-index fibers with a common depressed layer
Tomoki Honda, Takanori Sato, Takeshi Fujisawa (Hokaido Univ.), Taro Iwaya, Yuto Sagae, Taiji Sakamoto, Takashi Matsui, Kazuhide Nakajima (NTT), Kunimasa Saitoh (Hokaido Univ.) OFT2023-5
We design a standard diameter (125 μm) uncoupled 3-mode 4-core fiber (3M-4CF). In order to suppress the inter-core cross... [more] OFT2023-5
pp.20-23
OCS, OFT, OPE
(Joint) [detail]
2023-02-17
14:10
Okinawa kukuru-itomancity
(Primary: On-site, Secondary: Online)
A study on a PLC-based six-mode multi/demultiplexer using Y-branch mode converter and optical unitary converter
Yasuto Yoshida, Takanori Sato, Takeshi Fujisawa (Hokkaido Univ.), Takayoshi Mori, Taiji Sakamoto, Yoko Yamashita, Ryota Imada, Kazuhide Nakajima (NTT), Kunimasa Saitoh (Hokkaido Univ.) OCS2022-86 OFT2022-62 OPE2022-115
A selective/non-selective six-mode (de)multiplexer using planar lightwave circuits (PLC) is designed to realize mode-div... [more] OCS2022-86 OFT2022-62 OPE2022-115
pp.80-85(OCS), pp.53-58(OFT), pp.105-110(OPE)
OPE, OCS, LQE 2022-10-20
17:35
Ehime
(Primary: On-site, Secondary: Online)
Ultrasmall mosaic-based mode multiplexer for C-, O-, and C+O-band operations
Takeshi Fujisawa (Hokkaido Univ.), Takuya Mitarai, Takuya Okimoto, Naoyo Kono, Naoki Fujiwara (Sumitomo), Takanori Sato (Hokkaido Univ.), Hideki Yagi (Sumitomo), Kunimasa Saitoh (Hokkaido Univ.) OCS2022-26 OPE2022-72 LQE2022-35
 [more] OCS2022-26 OPE2022-72 LQE2022-35
pp.51-55
EMD, R, LQE, OPE, CPM 2022-08-26
11:25
Chiba  
(Primary: On-site, Secondary: Online)
Study on design of mosaic-based 2 × 2 3-dB power splitter in the mid infrared
Taichi Muratsubaki, Takeshi Fujisawa, Takanori Sato, Kunimasa Saitoh (Hokkaido Univ.) R2022-25 EMD2022-13 CPM2022-30 OPE2022-56 LQE2022-19
For the mid infrared waveband, we propose a mosaic-based 2 × 2 3-dB power splitter. By applying mosaic structure, the fo... [more] R2022-25 EMD2022-13 CPM2022-30 OPE2022-56 LQE2022-19
pp.50-55
OPE, OFT, OCS
(Joint) [detail]
2022-02-25
13:05
Online Online Group delay spread reduction using coupled multicore fibers with twist and bend
Kazushi Homma, Takanori Sato, Takeshi Fujisawa (Hokkaido Uni.), Yuto Sagae, Taiji Sakamoto, Takashi Matsui, Kazuhide Nakajima (NTT), Kunimasa Saitoh (Hokkaido Uni.) OCS2021-49 OFT2021-79 OPE2021-64
We investigate mode coupling characteristics in coupled multicore fibers with twist and bend for reducing the group dela... [more] OCS2021-49 OFT2021-79 OPE2021-64
pp.40-45(OCS), pp.49-54(OFT), pp.78-83(OPE)
R, LQE, OPE, CPM, EMD 2021-08-27
14:40
Online Online (Zoom) A design of highly fabrication-tolerant 2-µm 4-mode waveguide crossing based on mosaic structure
Taichi Muratsubaki, Takeshi Fujisawa, Yusuke Sawada, Takanori Sato, Kunimasa Saitoh (Hokkaido Univ.) R2021-26 EMD2021-7 CPM2021-16 OPE2021-27 LQE2021-6
A novel direct binary search algorithm for designing high-fabrication-tolerance mosaic-based devices is proposed, and wi... [more] R2021-26 EMD2021-7 CPM2021-16 OPE2021-27 LQE2021-6
pp.25-30
OPE, LQE 2020-11-20
15:30
Online Online The relationship between group index and group delay spread in coupled multicore fibers under macrobending condition
Yuki Yasui, Takeshi Fujisawa, Takanori Sato, Kunimasa Saitoh (Hokkaido Univ.) OPE2020-60 LQE2020-40
We reveal the relationship between group index and group delay spread (GDS) in coupled multicore fibers for space divisi... [more] OPE2020-60 LQE2020-40
pp.75-79
OPE, LQE 2020-11-20
15:30
Online Online Twist- and bend-induced mode conversion in coupled multi-core fibers
Kazushi Homma, Takeshi Fujisawa, Takanori Sato, Kunimasa Saitoh (Hokkaido Univ.) OPE2020-61 LQE2020-41
The propagation characteristics of coupled 3-core fibers under twisting and bending conditions are analyzed using beam p... [more] OPE2020-61 LQE2020-41
pp.80-85
OPE, LQE 2020-11-20
15:30
Online Online Suppression of bending loss in coupled few-mode multicore fibers with outer trench layer
Kenta Nishimura, Takeshi Fujisawa, Takanori Sato (Hokkaido Univ.), Taiji Sakamoto, Takashi Matsui, Yuto Sagae, Kazuhide Nakajima (NTT), Kunimasa Saitoh (Hokkaido Univ.) OPE2020-62 LQE2020-42
We propose a coupled few-mode multicore fiber with outer trench layer for suppressing both the group delay spread (GDS) ... [more] OPE2020-62 LQE2020-42
pp.86-91
OPE, OCS, LQE 2020-10-23
09:55
Online Online A comparison of the learning characteristics of optical device using an artificial neural network and Bayesian inference
Takeshi Fujisawa, Kunimasa Saitoh (Hokkaido Univ) OCS2020-10 OPE2020-33 LQE2020-13
 [more] OCS2020-10 OPE2020-33 LQE2020-13
pp.11-16
OCS, LQE, OPE 2019-10-18
15:05
Kagoshima   Fabrication and characterization of broadband TE0-TE1 mode divider
Takeshi Fujisawa (Hokkaido Univ.), Taiji Sakamoto, Takashi Matsui, Kazuhide Nakajima (NTT), Kunimasa Saitoh (Hokkaido Univ.) OCS2019-48 OPE2019-86 LQE2019-64
(Advance abstract in Japanese is available) [more] OCS2019-48 OPE2019-86 LQE2019-64
pp.109-112
OFT, OCS, OPE
(Joint) [detail]
2019-02-15
13:00
Fukuoka   Fabrication of wavefront-matching-method-designed silicon mode converters
Yusuke Sawada, Takanori Sato, Takeshi Fujisawa, Kunimasa Saitoh (Hokkaido Univ.) OCS2018-91 OFT2018-78 OPE2018-207
(Advance abstract in Japanese is available) [more] OCS2018-91 OFT2018-78 OPE2018-207
pp.57-62(OCS), pp.41-46(OFT), pp.73-78(OPE)
OFT, OCS, OPE
(Joint) [detail]
2019-02-15
13:25
Fukuoka   Development of beam propagation method for helicoidal waveguides and its application to twisted photonic crystal fibers
Takeshi Fujisawa, Takanori Sato, Kunimasa Saitoh (Hokkaido Univ.) OCS2018-92 OFT2018-79 OPE2018-208
(Advance abstract in Japanese is available) [more] OCS2018-92 OFT2018-79 OPE2018-208
pp.63-68(OCS), pp.47-52(OFT), pp.79-84(OPE)
OPE, LQE, OCS 2018-10-19
09:30
Saga   A Design of Low MDL Scrambling-type PLC 6 Mode Multi/ Demultiplexer
Motoki Shirata, Misa Kudo, Takeshi Fujisawa (Hokkaidou Univ.), Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Kazuhide Nakajima (NTT), Kunimasa Saitoh (Hokkaidou Univ.) OCS2018-40 OPE2018-76 LQE2018-65
The design of four-, six-, and eight-mode scrambling-type mode multi/demultiplexers (mode scramblers) together with the ... [more] OCS2018-40 OPE2018-76 LQE2018-65
pp.65-70
OCS, OFT, LSJ
(Joint) [detail]
2018-08-30
13:40
Hokkaido Hakodate Hokuyo Building 8Kai Hall Influence of disturbance on Inter-core Crosstalk between Heterogeneous Cores
Yoshimichi Amma, Katsuhiro Takenaga (Fujikura Ltd.), Takeshi Fujisawa, Kunimasa Saitoh, Masanori Koshiba (Hokkaido Univ.), Kazuhiko Aikawa (Fujikura Ltd.) OCS2018-20
A heterogeneous multi-core fiber (MCF) is one of the techniques to reduce inter-core crosstalk (XT) in a MCF. However, t... [more] OCS2018-20
pp.7-10
OPE, OCS, OFT
(Joint) [detail]
2018-02-16
11:35
Okinawa Okinawa Prefectural Museum A scrambling-type three-mode (de)multiplexer based on silica PLC
Takeshi Fujisawa (Hokkaido Univ.), Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Kazuhide Nakajima (NTT), Kunimasa Saitoh (Hokkaido Univ.) OCS2017-89 OFT2017-74 OPE2017-182
(Advance abstract in Japanese is available) [more] OCS2017-89 OFT2017-74 OPE2017-182
pp.49-54(OCS), pp.29-34(OFT), pp.67-72(OPE)
OPE 2017-12-07
11:40
Okinawa   Fabrication of Broadband Mach-Zehnder Mode Multi/Demultiplexer Based on 3dB Mode Divider with Taper Waveguide
Shun Ohta, Shuntaro Makino, Takeshi Fujisawa (Hokkaido Univ.), Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Kazuhide Nakajima (NTT), Kunimasa Saitoh (Hokkaido Univ.) OPE2017-94
We have studied a broadband mode multi/demultiplexer using Mach-Zehnder interferometer for combined use of the MDM and W... [more] OPE2017-94
pp.25-30
OPE 2017-12-07
13:15
Okinawa   [Poster Presentation] Development of the wavefront matching method for 3-D waveguide discontinuity problem and its application to Si-wire waveguide devices
Yusuke Sawada, Takeshi Fujisawa, Kunimasa Saitoh (Hokkaido Univ.) OPE2017-96
The wavefront matching method based on the three-dimensional finite-element method for waveguide discontinuity problem i... [more] OPE2017-96
pp.37-40
 Results 1 - 20 of 58  /  [Next]  
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