Researcher Database

TAKIGUCHI Koichi

Department / Course College of Science and Engineering Department of Electrical and Electronic Engineering

Title / Position Professor

Academic conference presentation
1.	2024/06	Spectrally efficient THz-wave communication using optical-domain or direct THz-domain reception signal processing (Invited talk) (EUROPL (International Congress and Expo on Optics, Photonics and Lasers) 2024)
2.	2024/05	Opto-electronic AND logical gate circuit consisting of integrated-optic interferometer and balanced photodetector (OPAL (International Conference on Optics, Photonics and Lasers) 2024)
3.	2024/03/27	Flexible capacity wireless communication in THz-band with Michelson interferometer-based THz-wave filter (OFC2024)
4.	2024/03/07	Flexible bit rate THz communication using Michelson interferometer-type THz-wave filter (IEICE General Conference)
5.	2024/01/31	Integrated-optic tunable filter for add/drop multiplexing of variable-capacity optical OFDM signal (Photonics West 2024)
6.	2023/11/25	Completely passive integrated-optic chromatic dispersion compensator with wide operational range and its use to chromatic dispersion compensation for optical PAM4 signal (Kansai-section Joint Convention of Institutes of Electrical Engineering)
7.	2023/11/25	High frequency usage efficiency and large-capacity wireless communication in THz band using optical domain reception signal processing (Invited talk) (Kansai-section Joint Convention of Institutes of Electrical Engineering)
8.	2023/11/13	Mode group division multiplexing communication using graded-index plastic optical fiber (IPC2023)
9.	2023/09/12	Mode group division multiplexing communication using graded-index plastic optical fiber (IEICE Society Conference)
10.	2023/09/12	Implementation of high-capacity PAM4 communication in THz-band using simplified signal processing (IEICE Society Conference)
11.	2023/08/20	Integrated-optic chromatic dispersion slope compensator with wide operational bandwidth (Optics + Photonics 2023)
12.	2023/03/08	Multi-input and output integrated optic filter for optical OFDM signal add/drop multiplexing (IEICE General Conference)
13.	2023/03/06	Fully passive integrated-optic chromatic dispersion compensator and its use to PAM4 signal compensation (OFC2023)
14.	2023/01/31	Integrated-optic chromatic dispersion compensator composed of arrayed-waveguide gratings and delay lines (Photonics West 2023)
15.	2022/09/06	Direct demultiplexing method of THz-wave multi-carrier signal in THz-domain (IEICE Society Conference)
16.	2022/08/01	Spectrally efficient THz-wave multi-carrier wireless communication using THz-domain Fourier transformation-type demultiplexer (CLEO Pacific Rim 2022)
17.	2022/07/06	Integrated-optic signal cipher circuit using two-dimensional code (OECC/PSC (OptoElectronics and Communications Conference/International Conference on Photonics in Switching and Computing) 2022)
18.	2022/05/17	PAM4 wireless communication in 300 GHz-band using integrated-optic PAM signal emulator (CLEO2022)
19.	2022/03/15	Preliminary investigation into direct demultiplexing method of THz-wave multi-carrier signal in THz-domain (IEICE General Conference)
20.	2022/01/27	Direct demultiplexing method of terahertz-wave multiple carrier channels in terahertz domain utilizing terahertz-wave asymmetric interferometer (Photonics West 2022)
21.	2022/01/26	Pulse amplitude modulation communication in terahertz-band using asymmetric Mach-Zehnder interferometer-type optical signal emulator (Photonics West 2022)
22.	2021/11	Research on Nyquist WDM wireless communication in THz-band (TELECOM FRONTIER)
23.	2021/09/15	Gate-free integrated-optic tunable filter for demultiplexing various channel symbol rate optical OFDM signals (IEICE Society Conference)
24.	2021/06/08	Integrated-optic gate-free tunable filter for demultiplexing various channel symbol rate OFDM signals (OFC2021)
25.	2021/03/12	Demultiplexing of optical OFDM channels using integrated-optic Fourier transform filter without optical gates (IEICE General Conference)
26.	2021/03	Terahertz-wave Nyquist wavelength division multiplexing communication utilizing integrated-optic spectrum synthesizer (Photonics West 2021)
27.	2020/11/14	Integrated-optic spectrum synthesizer with loop-back paths for processing 10 GHz-spaced frequency comb (Kansai-section Joint Convention of Institutes of Electrical Engineering)
28.	2020/11/14	Optical circuits for demultiplexing sub-carrier channels of variable capacity optical OFDM signal (Invited talk) (Kansai-section Joint Convention of Institutes of Electrical Engineering)
29.	2020/09/18	Investigation into characteristics limiting factors of Nyquist WDM communication in terahertz-band (IEICE Society Conference)
30.	2020/08/03	Integrated-optic spectrum synthesizer with loop-back paths for processing 10 GHz-spaced frequency comb (CLEO Pacific Rim 2020)
31.	2020/03/20	Flexible capacity terahertz-wave communication using Nyquist pulses and optical-domain reception signal processing (IEICE General Conference)
32.	2020/03/17	Performance evaluation of integrated-optic filter for demultiplexing variable capacity optical OFDM signal (IEICE General Conference)
33.	2020/03/09	Flexible data rate THz-wave communication using Nyquist pulses and optical-domain reception signal processing (OFC2020)
34.	2020/02/06	Integrated-optic spectrum synthesis circuit for manipulating 64 frequency components (Photonics West 2020)
35.	2019/12/01	MMI coupler-type optical DFT filter for demultiplexing 4 x 25 Gsymbol/s optical OFDM signal (Kansai-section Joint Convention of Institutes of Electrical Engineering)
36.	2019/10/20	Tunable optical OFDM sub-carrier channel demultiplexer utilizing time lens-based optical Fourier transform (Invited talk) (CECNet2019)
37.	2019/09/17	MMI coupler-type optical DFT filter for demultiplexing 25 Gsymbol/s sub-carrier-based optical OFDM signal (OSA/APS FiO/LS (Frontiers in Optics/Laser Science) 2019)
38.	2019/07/23	Spectral-efficient THz-wave wireless communication supported by optical signal processing (Invited talk) (WCAM2019)
39.	2019/07/01	Best Paper Award (Demultiplexing Method of Variable Capacity Optical OFDM Signal Using Time Lens-Based Optical Fourier Transform) (The Journal of Institute of Electronics, Information and communication Engineers)
40.	2019/06/13	OFDM and Nyquist WDM communication in THz-band using optical-domain reception signal processing (Invited talk) (EMN Meeting on Terahertz 2019)
41.	2019/05/08	Spectral-efficient and high-speed THz-wave communication using 40 Gsymbol/s channel-based Nyquist WDM (CLEO2019)
42.	2019/04/04	Optical conversion (IET Electronics Letters, in brief)
43.	2019/03/21	Investigation into Nyquist WDM communication in terahertz band (IEICE General Conference)
44.	2019/03/21	Chromatic dispersion tolerance of spectral-efficient and high-speed optical signal converted from terahertz-wave signal (IEICE General Conference)
45.	2019/03/19	Characteristics evaluation of integrated-optic tunable optical OFDM signal demultiplexer (IEICE General Conference)
46.	2019/03/05	Integrated-photonic tunable demultiplexer for variable channel number optical OFDM signals (OFC2019)
47.	2019/02/06	Nyquist wavelength division multiplexing communication in terahertz-band assisted by optical technology (Photonics West 2019)
48.	2019/02/06	Transmission characteristics of optical signal generated from high-speed and spectral-efficient signal in terahertz-band (Photonics West 2019)
49.	2018/12	Demultiplexing experiments of variable channel number optical OFDM signals using tunable optical OFDM signal demultiplexer (Kansai-section Joint Convention of Institutes of Electrical Engineering)
50.	2018/12	Conversion method of high-speed and spectral-efficeint terahertz-wave signal into optical signal (Kansai-section Joint Convention of Institutes of Electrical Engineering)
51.	2018/11	Tunable optical OFDM signal demultiplexers (Invited talk) (CECNet2018)
52.	2018/10	Seamless conversion of high-speed and spectral-efficient terahertz-wave signal into optical signal (Invited talk) (EMN Meeting on Photonics 2018)
53.	2018/09	Recent progress on integrated-optic demultiplexer for variable symbol rate optical OFDM signal (Invited talk) (WCAM (Annual World Congress of Advanced Materials) 2018)
54.	2018/08	Spectral-efficient terahertz-wave communication assisted by photonics (Invited talk) (PIERS (Progress in Electromagnetics Research Symposium) 2018)
55.	2018/05	Seamless connection between high-speed THz-wave and optical signals with high spectral efficiency (CLEO2018)
56.	2018/03	Preliminary investigation into THz-wave communication with high spectral efficiency using optical Nyquist filter (IEICE General Conference)
57.	2018/01	Integrated-optic tunable OFDM signal demultiplexer with small loss variation characteristics (Photonics West 2018)
58.	2017/11	Integrated-optic tunable chromatic dispersion compensators (Invited talk) (CECNet (International Conference on Electronics, Communications and Networks) 2017)
59.	2017/10	Real-time wireless OFDM communication in THz-band using optical DFT processing (MWP (International Topical Meeting on Microwave Photonics) 2017)
60.	2017/09	Demultiplexing method of terahertz-wave OFDM signals assisted by optical technology (Invited talk) (EMN Meeting on Photonics 2017)
61.	2017/09	Sub-carrier channel demultiplexing of THz-wave OFDM signal assisted by optical technology (IEICE Society Conference)
62.	2017/04	Recent progress on demultiplexer for variable symbol rate optical OFDM communication (Invited talk) (EMN Optoelectronics Meeting 2017)
63.	2017/03	Generation of terahertz-wave OFDM signal using optical technology (JSAP Spring Meeting)
64.	2017/02	Demultiplexing method of terahertz-wave OFDM sub-carrier channels using integrated-optic DFT circuit (Photonics West 2017)
65.	2016/11	Integrated-optic demultiplexer for variable capacity optical OFDM signals composed of slab star coupler-type optical DFT circuit and variable optical attenuators (Kansai-section Joint Convention of Institutes of Electrical Engineering)
66.	2016/11	Integrated-optic lattice-form tunable chromatic dispersion compensator with increased number of operable channels (Kansai-section Joint Convention of Institutes of Electrical Engineering)
67.	2016/09	Integrated-optic demultiplexer for variable capacity optical OFDM signals composed of slab star coupler-type optical DFT circuit and variable optical attenuators (ECOC2016)
68.	2016/08	Research on demultiplexing technology of variable capacity optical OFDM signal (TELECOM FRONTIER)
69.	2016/07	Tunable optical OFDM signal demultiplexer using time-domain optical Fourier transformation (OSA Advanced Photonics 2016)
70.	2016/06	Application of balanced photodetector to optoelectronic logic circuit and modulation format converter (Invited talk) (EMN Photodetectors Meeting 2016)
71.	2016/05	Integrated-optic spectrum synthesizer for advanced optical communication (Invited talk) (EMN Croatia Meeting 2016)
72.	2016/04	Recent attempts toward realization of demultiplexer for variable symbol rate optical OFDM signals (Invited talk) (EMN Dubai Meeting 2016)
73.	2016/03	Preliminary investigation into demultiplexing technology of variable optical OFDM signals using optical Fourier transform circuit composed of phase modulator and tunable chromatic dispersion emulator (IEICE General Conference)
74.	2016/03	Preliminary investigation into integrated-optic filter for variable optical OFDM signals (II) (IEICE General Conference)
75.	2016/02	Integrated-optic tunable chromatic dispersion compensator composed of lattice-form circuit with interleave filter (Photonics West 2016)
76.	2015/10	Integrated-optic filter for variable symbol rate optical OFDM signals (IPC (IEEE Photonics Conference) 2015)
77.	2015/09	High-speed operation of optical XOR circuit composed of balanced photo-detector and intensity modulator (IEICE Society Conference)
78.	2015/09	Preliminary investigation into integrated-optic filter for variable symbol rate optical OFDM signals (IEICE Society Conference)
79.	2015/06	Modulation format converter for mapping OOK to 4-level PAM data using balanced detection and intensity modulation (OSA Advanced Photonics 2015)
80.	2015/05	All-optical OFDM signal multiplexer and demultiplexer using optical waveguide technology (Invited talk) (EMN (Energy Materials Nanotechnology) Phuket Meeting 2015)
81.	2015/03	Modulation format converter for mapping OOK to 4-level PAM data using balanced detection and intensity modulation (IEICE General Conference)
82.	2015/03	Primary investigation into optical OFDM signal generation using optical inverse fast Fourier transform circuit (IEICE General Conference)
83.	2015/02	Optical OFDM signal generation using integrated-optic multiplexer based on optical IFFT (Photonics West 2015)
84.	2014/07	Exclusive OR circuit for 40 Gbit/s optical signals based on balanced detection and intensity modulation (OECC/ACOFT (Optoelectronics and Communications Conference/Australian Conference on Optical Fibre Technology) 2014)
85.	2014/03	Optical exclusive OR circuit based on balanced detection and intensity modulation (IEICE General Conference)
86.	2014/02	Optical XOR circuit using combined technology of photonics and electronics (Photonics West 2014)
87.	2013/03	Integrated-optic OFDM demultiplexers using optical DFT and FFT circuits (Invited talk) (Seminar at Dept. of Electrical and Computer Eng., Univ. of California at Santa Barbara (UCSB))
88.	2012/03	Integrated-optic OFDM demultiplexer using multi-mode interference coupler-based optical DFT circuit (OFC2012)
89.	2011/12	Integrated-optic OFDM demultiplexers (Invited talk) (EDIS (3rd Osaka Univ. Global COE CEDI International Symposium -Electronic Devices Innovation-) 2011)
90.	2011/07	Optical OFDM demultiplexer using silica PLC-based Fourier transform circuit (Invited talk) (OECC2011)
91.	2011/06	Integrated-optic OFDM demultiplexers using silica PLC-based DFT and FFT circuits (Invited talk) (IPR2011)
92.	2011/03	Integrated-optic demultiplexers for optical OFDM signals (Invited talk) (OFC2011)
93.	2010/09	Integrated-optic OFDM demultiplexer using slab star coupler-based optical DFT circuit (Post-deadline paper) (ECOC2010)
94.	2010/09	Spectral multi-level ASK × BPSK OCDM based on electrical-domain spatial code spreading and self-homodyne detection (ECOC2010)
95.	2010/07	Integrated optic demultiplexer for optical OFDM sub-carrier channels (Invited talk) (OECC2010)
96.	2010/03	PLC-based eight-channel OFDM demultiplexer and its demonstration with 160 Gbit/s signal reception (OFC2010)
97.	2009/03	Optical OFDM demultiplexer using silica PLC based optical FFT circuit (OFC2009)
98.	2008/09	Experimental demonstration of phase-matched OCDM using PLC-LN multi-frequency self-homodyne module (ECOC2008)
99.	2008/09	Integrated-photonic modulator for frequency-domain OCDMA using hybrid assembly technique with silica PLCs and LN waveguides (ECOC2008)
100.	2008/02	Integrated photonic devices for OCDMA using silica planar lightwave circuit technology (Invited talk) (OFC2008)
101.	2007/09	Large-scale AWG router (15 nodes, 217 paths) providing full-mesh and non-uniform transmission capacities (ECOC2007)
102.	2007/03	Integrated photonic decoder with complementary code processing and balanced detection for two-dimensional OCDMA (OFC2007)
103.	2006/10	Highly functional PLC devices for advanced photonic networks (Invited talk) (Optics East 2006)
104.	2006/09	AWG wavelength routing system with non-uniform transmission paths (ECOC2006)
105.	2006/07	Recent progress on optical signal processing devices based on planar lightwave circuit technology (Invited talk) (OECC2006)
106.	2006/03	Time-spreading/wavelength-hopping OCDMA experiment using PLC encoder/decoder with large spread factor (OFC2006)
107.	2005/05	Excitation engineered pulse train generators (CLEO (Conference on Lasers and Electro-Optics) 2005)
108.	2004/11	Functional PLC devices (Invited talk) (APOC (Asia-Pacific Optical Communications) 2004)
109.	2004/07	Design of optical circuits for dispersion compensation (Invited talk) (IPR (Integrated Photonics Research, Silicon and Nanophotonics) 2004)
110.	2004/03	Photonic functional devices based on a planar lightwave circuit (PLC) (Invited talk) (Seminar at Dept. of Electrical Eng., Univ. of California at Los Angeles (UCLA))
111.	2004/02	Flexible pulse waveform generation using a silica-waveguide based spectrum synthesis circuit (OFC2004)
112.	2003/04	Photonic functional devices based on a silica planar lightwave circuit (Invited talk) (ECIO (European Conference on Integrated Optics) 2003)
113.	2003/03	Low-loss integrated-optic dynamic chromatic dispersion compensators using lattice-form planar lightwave circuits (OFC2003)
114.	2003/03	Multi-channel chromatic dispersion compensator consisting of modified interleave filter (OFC2003)
115.	2002/07	Recent advances in optical passive and dynamic devices for 40 Gbit/s transmission (Invited talk) (OECC2002)
116.	2002/03	Encoder/decoder on planar lightwave circuit for time-spreading/wavelength-hopping optical CDMA (OFC2002)
117.	2002/03	Recent advances in PLC functional devices (Invited talk) (Seminar at Dept. of Electrical and Computer Eng., Univ. of California at Santa Barbara (UCSB))
118.	2001/09	Planar lightwave circuit polarization-mode dispersion compensator (ECOC2001)
119.	2001/07	Recent advances in PLC functional devices (Invited talk) (LEOS Summer Topical Meetings 2001)
120.	2001/03	Optical pulse pattern recognition circuit based on an optical digital-to analog converter on a planar lightwave circuit (OFC2001)
121.	2001/01	Polarization mode dispersion compensator on a planar lightwave circuit (CPT (Contemporary Photonic Technologies) 2001)
122.	2000/09	Integrated-optic dispersion slope equalizer for N x 40 Gb/s WDM transmission (ECOC2000)
123.	2000/07	A countermeasure against polarization fluctuation induced noise and its feasibility in a resonator micro optics gyro on silica planar lightwave circuit (OECC (Optoelectronics and Communications Conference) 2000)
124.	1999/04	Reduction of backscattering induced noise by ternary phase shift keying in monolithically integrated micro optic gyro on silica planar lightwave circuit (OFS1999)
125.	1999/02	High-speed 32-channel optical wavelength selector using PLC hybrid integration (OFC1999)
126.	1999/02	Integrated optical time-division-multiplexer based on planar lightwave circuit (OFC1999)
127.	1999/01	Analog modulation of 1.55 micron vertical-cavity lasers (Photonics West 1999)
128.	1998/11	Integrated optical ring-resonator gyro using silica planar lightwave circuit (Photonics East 1998)
129.	1998/03	アレイ導波路格子対を用いたコヒ-レント光CDMAの原理実験 (電子情報通信学会, 総合大会)
130.	1998/02	Lossless hybrid integrated 8-ch optical wavelength selector module using PLC platform and PLC-PLC direct attachment technique (Post-deadline paper) (OFC1998)
131.	1996/09	Dispersion slope equalizing experiment using planar lightwave circuit in 200 Gbit/s TDM transmission (ECOC1996)
132.	1996/02	100 Gbit/s x 10 channel OTDM/WDM transmission using a single supercontinuum WDM source (Post-deadline paper) (OFC1996)
133.	1996/02	400 Gbit/s TDM transmission of 0.98 ps pulses over 40 km employing dispersion slope compensation (Post-deadline paper) (OFC1996)
134.	1995/07	Integrated silica-waveguide optical dispersion equalizers (Invited talk) (CLEO (Conference on Lasers and Electro Optics) Pacific Rim 1995)
135.	1995/06	Photosensitivity and its applications (Invited talk) (IOOC1995)
136.	1995/06	Variable group-delay dispersion equalizer using lattice-form programmable optical filter (IOOC1995)
137.	1995/03	Recent advances in planar lightwave functional devices (Invited talk) (PS (Photonics in Switching) 1995)
138.	1995/02	16ch optical add/drop multiplexer using silica-based arrayed-waveguide gratings (Post-deadline paper) (OFC1995)
139.	1994/09	Design of a variable group-delay dispersion equalizer using a lattice-type programmable optical frequency filter (ECOC1994)
140.	1994/09	Dispersion compensation of a 100 km, 10 Gbit/s optical fiber link using a chirped in-fiber Bragg grating with a linear dispersion characteristic (Post-deadline paper) (ECOC1994)
141.	1994/05	Programmable PLC optical frequency filter developed (NTT Review)
142.	1994/02	Aperiodic in-fiber Bragg gratings for optical fiber dispersion compensation (Post-deadline paper) (OFC1994)
143.	1994/02	Penalty free dual-channel 10 Gbit/s transmission over 132 km standard fiber using a PLC delay equalizer with -830 ps/nm (Post-deadline paper) (OFC (Optical Fiber Communication) 1994)
144.	1993/09	Planar lightwave circuit optical dispersion equalizer (Post-deadline paper) (ECOC (European Conference on Optical Communication) 1993)
145.	1992/01	Method to reduce the optical Kerr-effect induced bias in an optical passive ring-resonator gyro (OFS1992)
146.	1992/01	Removal of lock-in phenomenon in optical passive ring-resonator gyro by using optical Kerr-effect in fiber resonator (Post-deadline paper) (OFS1992)
147.	1991/10	Reduction of a polarization-fluctuation induced error in an optical passive ring-resonator gyro by using a single-polarization optical fiber (MOC (Microoptics Conference) 1991)
148.	1991/09	Drift reduction in an optical passive ring-resonator gyro (Invited talk) (Fiber Optic Gyros: 15th Anniversary Conference)
149.	1990/12	Partially digital-feedback scheme and evaluation of optical Kerr-effect induced bias in optical passive ring-resonator gyro (OFS1990)
150.	1990/10	Manner to reduce the bias of optical passive ring-resonator gyro caused by the misalignment of the polarization-axis in the resonator (OFSET (Optical Fiber Science and Electromagnetic Theory) 1990)
151.	1990/07	Evaluation of the output error in an optical passive ring-resonator gyro with a 90-deg. polarization axis rotation in the polarization-maintaining fiber-resonator (OEC (Optoelectronics Confrence) 1990)
152.	1989/09	Bias of an optical passive ring-resonator gyro due to the misalignment of the polarization axis in the resonator formed by the polarization-maintaining fiber (OFS (Optical Fiber Sensors) 1989)
153.	1989/07	Adjustment-free method to eliminate the noise induced by the backscattering in an optical passive ring-resonator gyro (IOOC (Integrated Optics and Optical Fiber Communication) 1989)