Researcher Database

TAKIGUCHI Koichi

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

Title / Position Professor

Papers
1.	2024/03/10	Mode group division multiplexing communication with the use of graded-index plastic optical fiber │ IEICE Electronics Express │ 21 (5),pp.20230472-1-20230472-4 (Co-authored)
2.	2023/12	Integrated-optic chromatic dispersion compensator with completely passive operation and wide operational bandwidth │ OPTICA Optics Continuum │ 2 (12),pp.2529-2539 (Sole-authored)
3.	2022/08	Pulse amplitude modulation wireless communication in 300 GHz-band employing integrated-optic interferometer-based signal emulator │ OPTICA Optics Continuum │ 1 (8),pp.1741-1751 (Co-authored)
4.	2022/03	Direct demultiplexing method of terahertz-wave multiple carrier channels in terahertz domain utilizing terahertz-wave asymmetric interferometer │ SPIE Proceedings │ 12000,pp.120000O-1-120000O-5 (Co-authored)
5.	2022/03	Pulse amplitude modulation communication in terahertz-band using asymmetric Mach-Zehnder interferometer-type optical signal emulator │ SPIE Proceedings │ 12000,pp.120000D-1-120000D-5 (Co-authored)
6.	2021/08	Gate-free integrated-optic tunable filter for demultiplexing various capacity optical OFDM signals │ OSA Continuum │ 4 (8),pp.2319-2329 (Co-authored)
7.	2021/03	Terahertz-wave Nyquist wavelength division multiplexing communication utilizing integrated-optic spectrum synthesizer │ SPIE Proceedings │ 11685,pp.116850M-1-116850M-5 (Sole-authored)
8.	2020/09	40 Gsymbol/s channel-based Nyquist wavelength division multiplexing communication in a terahertz-band using optical-domain reception signal processing │ OSA Continuum │ 3 (9),pp.2308-2319 (Sole-authored)
9.	2020/01	Integrated-optic spectrum synthesis circuit for manipulating 64 frequency components │ SPIE Proceedings │ 11309,pp.113090F1-113090F4 (Sole-authored)
10.	2019/08	Tunable optical OFDM demultiplexer utilizing slab star coupler-based optical DFT circuit │ IEEE Photonics Technology Letters │ 31 (16),pp.1327-1330 (Co-authored)
11.	2019/04	Chromatic dispersion tolerance of high-speed and spectral-efficient optical signal converted from terahertz-wave signal │ IET Electronics Letters │ 55 (7),pp.396-398 (Sole-authored)
12.	2019/03	Method for converting high-speed and spectrally efficient terahertz-wave signal into optical signal │ OSA Optics Express │ 27 (5),pp.6598-6606 (Sole-authored)
13.	2019/03	Nyquist wavelength division multiplexing communication in terahertz-band assisted by optical technology │ SPIE Proceedings │ 10917,pp.109172D1-109172D5 (Sole-authored)
14.	2019/03	Transmission characteristics of optical signal generated from high-speed and spectral-efficient signal in terahertz-band │ SPIE Proceedings │ 10917,pp.109171Y1-109171Y6 (Sole-authored)
15.	2018/02	Demultiplexing method of variable capacity optical OFDM signal using time lens-based optical Fourier transform │ IEICE Transactions on Electronics │ E101-C (2),pp.112-117 (Co-authored)
16.	2017/08	Sub-carrier channel demultiplexing of terahertz-wave OFDM signal assisted by optical technology │ IET Electronics Letters │ 53 (16),pp.1123-1125 (Sole-authored)
17.	2017/02	Demultiplexing method of terahertz-wave OFDM sub-carrier channels using integrated-optic DFT circuit │ SPIE Proceedings │ 10103,pp.101031D1-101031D5 (Sole-authored)
18.	2016/03	Integrated-optic tunable chromatic dispersion compensator composed of lattice-form circuit with interleave filter │ SPIE Proceedings │ 9750,pp.97500K1-97500K5 (Sole-authored)
19.	2016/03	Modulation format conversion of OOK to PAM signals using　balanced detection and intensity modulation │ IEICE Transactions on Electronics │ E99-C (3),pp.427-429 (Sole-authored)
20.	2016/02	Integrated-optic lattice-form tuneable chromatic dispersion compensator with increased number of operable channels │ IET Electronics Letters │ 52 (3),pp.216-217 (Sole-authored)
21.	2015/12	High-speed operation of optical exclusive OR circuit based on balanced detection and intensity modulation │ IET The Journal of Engineering │ 3 (12),pp.1-3 (Sole-authored)
22.	2015/03	Integrated-optic OFDM signal multiplexer composed of optical IFFT circuit │ IET Electronics Letters │ 51 (6),pp.505-506 (Co-authored)
23.	2015/02	Optical OFDM signal generation using integrated-optic multiplexer based on optical IFFT │ SPIE Proceedings │ 9389,pp.93890J1-93890J6 (Co-authored)
24.	2014/04	Exclusive OR circuit for optical signals using combined technology of photonics and electronics │ IET Electronics Letters │ 50 (9),pp.692-693 (Sole-authored)
25.	2014/02	Optical XOR circuit using combined technology of photonics and electronics │ SPIE Proceedings │ 9009,pp.9009041-9009046 (Sole-authored)
26.	2011/10	Spectrally efficient frequency-domain optical CDM employing QAM based on electrical code spreading │ IEICE Transactions on Communications │ E94-B (10),pp.2877-2880 (Co-authored)
27.	2011/04	Optical orthogonal frequency division multiplexing demultiplexer using slab star coupler-based optical discrete Fourier transform circuit │ OSA Optics Letters │ 36 (7),pp.1140-1142 (Co-authored)
28.	2010/07	Foreword, special section on photonic technologies for access networks │ IEICE Transactions on Electronics │ E93-C (7),pp.1138-1138 (Co-authored)
29.	2010/04	Integrated-optic eight-channel OFDM demultiplexer and its demonstration with 160 Gbit/s signal reception │ IET Electronics Letters │ 46 (8),pp.575-576 (Co-authored)
30.	2009/06	Demultiplexer for optical orthogonal frequency-division multiplexing using an optical fast-Fourier-transform circuit │ OSA Optics Letters │ 34 (12),pp.1828-1830 (Co-authored)
31.	2009/04	Integrated-optic digital-to-analogue converter for recognizing multiwavelength pulse patterns │ IET Electronics Letters │ 45 (9),pp.466-467 (Co-authored)
32.	2009/02	Foreword, special section on recent advances in integrated photonic devices │ IEICE Transactions on Electronics │ E92-C (2),pp.185-186 (Co-authored)
33.	2008/06	Tunable chromatic dispersion and dispersion slope compensator using a planar lightwave circuit lattice-form filter │ OSA Optics Letters │ 33 (11),pp.1243-1245 (Co-authored)
34.	2007/05	Foreword, special section on recent advances in integrated photonic devices │ IEICE Transactions on Electronics │ E90-C (5),pp.1035-1036 (Co-authored)
35.	2007/04	Integrated photonic decoder with complementary code processing and balanced detection for two-dimensional optical code division multiple access │ OSA Optics Letters │ 32 (7),pp.784-786 (Co-authored)
36.	2007/02	AWG-based wavelength router with nonuniform number of transmission paths │ IEEE Photonics Technology Letters │ 19 (3),pp.167-169 (Co-authored)
37.	2006/10	Highly functional PLC devices for advanced photonic networks (Invited paper) │ SPIE Proceedings │ 6389 (Sole-authored)
38.	2006/07	Guest editorial, optical signal processing │ IEEE/OSA Journal of Lightwave Technology │ 24 (7),pp.2484-2486 (Co-authored)
39.	2006/07	Optical signal processing device based on waveguide-type variable delay lines and optical gates │ IEEE/OSA Journal of Lightwave Technology │ 24 (7),pp.2593-2601 (Co-authored)
40.	2006/03	Time-spreading/wavelength-hopping OCDMA experiment using PLC encoder/decoder with large spread factor │ IEE Electronics Letters │ 42 (5),pp.301-302 (Co-authored)
41.	2006/02	Arrayed-waveguide grating with uniform loss properties over the entire range of wavelength channels │ OSA Optics Letters │ 31 (4),pp.459-461 (Co-authored)
42.	2005/10	Integrated-optic variable delay line and its application to a low-coherence reflectometer │ OSA Optics Letters │ 30 (20),pp.2739-2741 (Co-authored)
43.	2005/07	PLC optical signal processing devices for developing highly functional optical networks │ NTT Technical Review │ 3 (7),pp.32-36 (Co-authored)
44.	2005/03	Integrated-optic encoder/decoder for time-spreading/wavelength-hopping optical CDMA │ IEEE Journal of Selected Topics on Quantum Electronics │ 11 (2),pp.300-306 (Co-authored)
45.	2005/01	Functional PLC devices (Invited paper) │ SPIE Proceedings │ 5623,pp.325-337 (Sole-authored)
46.	2004/04	Flexible pulse waveform generation using silica-waveguide-based spectrum synthesis circuit │ IEE Electronics Letters │ 40 (9),pp.537-538 (Co-authored)
47.	2003/12	Transmission experiment using silica waveguide based encoder/decoders for time-spreading/wavelength-hopping CDMA │ IEE Electronics Letters │ 39 (25),pp.1813-1814 (Co-authored)
48.	2003/11	Integrated-optic dispersion slope equalizer for N x several tens of Gb/s WDM transmission │ IEEE/OSA Journal of Lightwave Technology │ 21 (11),pp.2463-2469 (Co-authored)
49.	2003/07	Integrated-optic timing tuner for high-speed WDM signals │ IEEE Photonics Technology Letters │ 15 (7),pp.948-950 (Co-authored)
50.	2003/02	Method for adjusting lattice-form optical devices and its use in realizing low-loss variable chromatic dispersion compensator │ IEE Electronics Letters │ 39 (4),pp.355-356 (Co-authored)
51.	2003/01	Label swapping device based on time-slot switching and planar lightwave circuit │ IEE Electronics Letters │ 39 (1),pp.51-52 (Co-authored)
52.	2002/06	Dynamic gain equalization filter based on integrated optical transversal filter with asymmetric combiner │ IEE Electronics Letters │ 38 (12),pp.560-561 (Co-authored)
53.	2002/05	Encoder/decoder on planar lightwave circuit for time-spreading/wavelength-hopping optical CDMA │ IEE Electronics Letters │ 38 (10),pp.469-470 (Co-authored)
54.	2002/05	Highly functional hybrid optical devices for advanced photonic networks │ NTT Review │ 14 (3),pp.23-27 (Co-authored)
55.	2002/04	Planar lightwave circuit polarization-mode dispersion compensator │ IEEE Photonics Technology Letters │ 14 (4),pp.507-509 (Co-authored)
56.	2001/11	Dispersion slope equalizer on planar lightwave circuit for 40 Gbit/s based WDM transmission │ IEE Electronics Letters │ 37 (24),pp.1469-1470 (Co-authored)
57.	2001/10	Recent advances in PLC functional devices (Invited paper) │ IEEE LEOS Newsletter │ 15 (5),pp.23-27 (Sole-authored)
58.	2001/09	Dispersion compensation techniques using planar lightwave circuits │ NTT Review │ 13 (5),pp.34-41 (Co-authored)
59.	2001/09	Integrated optical digital-to analogue converter and its application to pulse pattern recognition │ IEE Electronics Letters │ 37 (20),pp.1237-1238 (Co-authored)
60.	2001/05	Integrated optic dispersion slope equalizer for N x 20 Gbit/s WDM transmission │ IEE Electronics Letters │ 37 (11),pp.701-703 (Co-authored)
61.	2000/12	Harmonic distortion in 1.55-micron vertical-cavity lasers │ IEEE Photonics Technology Letters │ 12 (12),pp.1686-1688 (Co-authored)
62.	2000/03	Athermal silica-based optical add/drop multiplexer consisting of arrayed waveguide gratings and double gate thermo-optical switches │ IEE Electronics Letters │ 36 (6),pp.528-529 (Co-authored)
63.	2000/03	Planar lightwave circuit dispersion equalizer with reduced bias electrical power employing phase trimming technique │ IEE Electronics Letters │ 36 (7),pp.657-658 (Co-authored)
64.	2000/01	Monolithically integrated resonator micro optic gyro on silica planar lightwave circuit │ IEEE/OSA Journal of Lightwave Technology │ 18 (1),pp.66-72 (Co-authored)
65.	1999/10	Integrated optical polarization analyzer on planar lightwave circuit │ IEE Electronics Letters │ 35 (22),pp.1948-1949 (Co-authored)
66.	1999/07	Integrated optical time division multiplexer based on planar lightwave circuit │ IEE Electronics Letters │ 35 (15),pp.1263-1264 (Co-authored)
67.	1999/06	Reduction of backscattering-induced noise by ternary phase shift keying in resonator micro-optic gyro integrated on silica planar lightwave circuit │ IEE Electronics Letters │ 35 (13),pp.1076-1077 (Co-authored)
68.	1999/04	Analog modulation of 1.55 micron vertical-cavity lasers │ SPIE Proceedings │ 3627,pp.119-129 (Co-authored)
69.	1999/02	Integrated optical ring-resonator gyro using silica planar lightwave circuit │ SPIE Proceedings │ 3541,pp.66-75 (Co-authored)
70.	1998/09	Dispersion slope equalizer for dispersion shifted fiber using a lattice-form programmable optical filter on a planar lightwave circuit │ IEEE/OSA Journal of Lightwave Technology │ 16 (9),pp.1647-1656 (Co-authored)
71.	1996/10	Dispersion slope equalizing experiment using planar lightwave circuit for 200 Gbit/s time-division-multiplexed transmission │ IEE Electronics Letters │ 32 (22),pp.2083-2085 (Co-authored)
72.	1996/09	Planar lightwave circuit dispersion equalizer │ IEEE/OSA Journal of Lightwave Technology │ 14 (9),pp.2003-2011 (Co-authored)
73.	1996/06	Variable group-delay dispersion equalizer using lattice-form programmable optical filter on planar lightwave circuit │ IEEE Journal of Selected Topics on Quantum Electronics │ 2 (2),pp.270-276 (Co-authored)
74.	1996/05	1 Tbit/s (100 Gbit/s x 10 channel) OTDM/WDM transmission using a single supercontinuum WDM source │ IEE Electronics Letters │ 32 (10),pp.906-907 (Co-authored)
75.	1996/05	Single channel 400 Gbit/s time-division-multiplexed transmission of 0.98 ps pulses over 40 km employing dispersion slope compensation │ IEE Electronics Letters │ 32 (10),pp.916-918 (Co-authored)
76.	1996/04	Higher order dispersion equalizer of dispersion shifted fiber using a lattice-form programmable optical filter │ IEE Electronics Letters │ 32 (8),pp.755-757 (Co-authored)
77.	1996/03	Eight-channel flat spectral response arrayed-waveguide multiplexer with asymmetrical Mach-Zehnder filters │ IEEE Photonics Technology Letters │ 8 (3),pp.373-374 (Co-authored)
78.	1996/01	Variable bandwidth and tunable center frequency filter using transversal-form programmable optical filter │ IEE Electronics Letters │ 32 (2),pp.113-114 (Co-authored)
79.	1995/12	Dispersion compensation using a variable group-delay dispersion equalizer │ IEE Electronics Letters │ 31 (25),pp.2192-2194 (Co-authored)
80.	1995/07	Variable group-delay dispersion equalizer based on a lattice-form programmable optical filter │ IEE Electronics Letters │ 31 (15),pp.1240-1241 (Co-authored)
81.	1995/06	Unrepeatered transmission of an OTDM 40 Gbit/s signal over 110 km using a dispersion-adjustable PLC delay equalizer │ IEE Electronics Letters │ 31 (12),pp.1003-1004 (Co-authored)
82.	1995/04	16-channel optical add/drop multiplexer using silica-based arrayed-waveguide gratings │ IEE Electronics Letters │ 31 (9),pp.723-724 (Co-authored)
83.	1995/01	Planar lightwave circuit dispersion equalizer module with polarization insensitive properties │ IEE Electronics Letters │ 31 (1),pp.57-58 (Co-authored)
84.	1994/10	Chirped in-fiber Bragg grating dispersion compensators: Linearization of dispersion characteristics and demonstration of dispersion compensation in 100 km, 10 Gbit/s optical fiber link │ IEE Electronics Letters │ 30 (21),pp.1755-1756 (Co-authored)
85.	1994/09	Chirped in-fiber Bragg gratings for optical fiber dispersion compensation │ OSA Optics Letters │ 19 (17),pp.1314-1316 (Co-authored)
86.	1994/08	Planar lightwave circuit dispersion equalizer with a wide operational frequency range │ IEE Electronics Letters │ 30 (17),pp.1404-1406 (Co-authored)
87.	1994/04	Aperiodic in-fiber Bragg gratings for optical fiber dispersion compensation (Invited paper) │ OSA Optics & Photonics News │ 13 (4),pp.79 (Co-authored)
88.	1994/04	Dispersion compensation using a planar lightwave circuit optical equalizer │ IEEE Photonics Technology Letters │ 6 (4),pp.561-564 (Co-authored)
89.	1994/01	Planar lightwave circuit optical dispersion equalizer │ IEEE Photonics Technology Letters │ 6 (1),pp.86-88 (Co-authored)
90.	1993/10	Reduction of a polarization-fluctuation-induced error in an optical passive ring-resonator gyro by using a single-polarization optical fiber │ IEEE/OSA Journal of Lightwave Technology │ 11 (10),pp.1687-1693 (Co-authored)
91.	1992/07	Removal of lock-in phenomenon in optical passive ring-resonator gyro by using optical Kerr-effect in fiber resonator │ IEEE Photonics Technology Letters │ 4 (7),pp.810-812 (Co-authored)
92.	1992/04	Bias of an optical passive ring-resonator gyro caused by the misalignment of the polarization axis in the polarization-maintaining fiber resonator │ IEEE/OSA Journal of Lightwave Technology │ 10 (4),pp.514-522 (Co-authored)
93.	1992/03	Studies on comprehensive noise reduction methods in optical passive ring-resonator gyro │ Dissertation, Graduate School of Engineering, The University of Tokyo │ ,pp.1-199 (Sole-authored)
94.	1992/02	Drift reduction in an optical passive ring-resonator gyro (Invited paper) │ SPIE Proceedings │ 1585,pp.116-127 (Co-authored)
95.	1992/02	Method to reduce the optical Kerr-effect induced bias in an optical passive ring-resonator gyro │ IEEE Photonics Technology Letters │ 4 (2),pp.203-206 (Co-authored)
96.	1991/07	Partially digital-feedback scheme and evaluation of optical Kerr-effect induced bias in optical passive ring-resonator gyro │ IEEE Photonics Technology Letters │ 3 (7),pp.679-681 (Co-authored)
97.	1991/01	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 │ IEEE Photonics Technology Letters │ 3 (1),pp.88-90 (Co-authored)
98.	1990/01	Adjustment-free method to eliminate the noise induced by the backscattering in an optical passive ring-resonator gyro │ IEEE Photonics Technology Letters │ 2 (1),pp.75-77 (Co-authored)