Prof. Koichi Takiguchi Profile

Prof. Koichi Takiguchi

Professor at Ritsumeikan University

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Author

Publications (14)

Proceedings Article | 12 March 2024 Poster + Paper

Integrated-optic tunable filter for add/drop multiplexing of variable-capacity optical OFDM signal

Koichi Takiguchi, Yamato Furukawa

Proceedings Volume 12889, 128890S (2024) https://doi.org/10.1117/12.3000577

KEYWORDS: Tunable filters, Orthogonal frequency division multiplexing, Integrated optics, Optical filters, Waveguides, Transmittance, Stars, Multiplexing, Electronic filtering, Signal processing

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Proceedings Article | 5 October 2023 Poster + Paper

Integrated-optic chromatic dispersion slope compensator with wide operational bandwidth

Koichi Takiguchi

Proceedings Volume 12682, 126820P (2023) https://doi.org/10.1117/12.2675687

KEYWORDS: Dispersion, Integrated optics, Waveguides, Silica, Signal filtering, Transmittance, Signal processing, Signal intensity, Optical filters

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Proceedings Article | 17 March 2023 Presentation + Paper

Integrated-optic chromatic dispersion compensator composed of arrayed-waveguide gratings and delay lines

Koichi Takiguchi

Proceedings Volume 12425, 1242503 (2023) https://doi.org/10.1117/12.2647665

KEYWORDS: Dispersion, Arrayed waveguide gratings, Waveguides, Integrated optics, Transmittance, Silica, Optical gratings, Multiplexing

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Proceedings Article | 7 March 2022 Presentation + Paper

Direct demultiplexing method of terahertz-wave multiple carrier channels in terahertz domain utilizing terahertz-wave asymmetric interferometer

Koichi Takiguchi, Nozomu Nishio

Proceedings Volume 12000, 120000O (2022) https://doi.org/10.1117/12.2608541

KEYWORDS: Mirrors, Interferometers, Beam splitters, Signal detection, Lenses, Diodes, Antennas, Mach-Zehnder interferometers

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Proceedings Article | 7 March 2022 Presentation + Paper

Pulse amplitude modulation communication in terahertz-band using asymmetric Mach-Zehnder interferometer-type optical signal emulator

Koichi Takiguchi, Nozomu Nishio

Proceedings Volume 12000, 120000D (2022) https://doi.org/10.1117/12.2607289

KEYWORDS: Signal detection, Integrated optics, Wireless communications, Forward error correction, Amplitude modulation, Phase shifts, Optical communications, Antennas

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Proceedings Article | 5 March 2021 Presentation + Paper

Terahertz-wave Nyquist wavelength division multiplexing communication utilizing integrated-optic spectrum synthesizer

Koichi Takiguchi

Proceedings Volume 11685, 116850M (2021) https://doi.org/10.1117/12.2577087

KEYWORDS: Wavelength division multiplexing, Integrated optics, Wireless communications, Variable optical attenuators, Thermal optics, Signal attenuation, Semiconductor lasers, Picosecond phenomena, Phase shifts

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Proceedings Article | 31 January 2020 Paper

Integrated-optic spectrum synthesis circuit for manipulating 64 frequency components

Koichi Takiguchi

Proceedings Volume 11309, 113090F (2020) https://doi.org/10.1117/12.2544569

KEYWORDS: Integrated optics, Integrated circuit design, Integrated circuits, Phase shifts, Waveguides, Silica, Variable optical attenuators, Transmittance, Signal attenuation, Photonic integrated circuits

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Proceedings Article | 1 March 2019 Paper

Nyquist wavelength division multiplexing communication in terahertz-band assisted by optical technology

Koichi Takiguchi

Proceedings Volume 10917, 109172D (2019) https://doi.org/10.1117/12.2514109

KEYWORDS: Wavelength division multiplexing, Optical filters, Optical communications, Signal processing, Radio optics, Signal detection, Modulators, Electronic filtering, Signal generators, Channel projecting optics

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Proceedings Article | 1 March 2019 Paper

Transmission characteristics of optical signal generated from high-speed and spectral-efficient signal in terahertz-band

Koichi Takiguchi

Proceedings Volume 10917, 109171Y (2019) https://doi.org/10.1117/12.2505392

KEYWORDS: Optical filters, Electronic filtering, Single mode fibers, Signal detection, Signal generators, Fiber optics, Radio optics, Antennas, Heterodyning, Modulation

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Proceedings Article | 20 March 2018 Presentation

Integrated-optic tunable OFDM signal demultiplexer with small loss variation characteristics (Conference Presentation)

Koichi Takiguchi

Proceedings Volume 10561, 105610A (2018) https://doi.org/10.1117/12.2284624

KEYWORDS: Orthogonal frequency division multiplexing, Demultiplexers, Integrated optics, Signal attenuation, Optical communications, Channel projecting optics, Adaptive optics, Optical networks, Optical arrays, Optical circuits

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Proceedings Article | 24 February 2017 Presentation + Paper

Demultiplexing method of terahertz-wave OFDM sub-carrier channels using integrated-optic DFT circuit

Koichi Takiguchi

Proceedings Volume 10103, 101031D (2017) https://doi.org/10.1117/12.2251082

KEYWORDS: Orthogonal frequency division multiplexing, Optical circuits, Optical communications, Terahertz radiation, Extremely high frequency, Integrated optics, Channel projecting optics, Signal processing, Integrated circuit design, Integrated circuits, Signal generators, Waveguides, Modulators

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Proceedings Article | 1 March 2016 Paper

Integrated-optic tunable chromatic dispersion compensator composed of lattice-form circuit with interleave filter

Koichi Takiguchi

Proceedings Volume 9750, 97500K (2016) https://doi.org/10.1117/12.2207603

KEYWORDS: Dispersion, Mach-Zehnder interferometers, Optical signal processing, Photonics, Tunable filters, Filtering (signal processing), Integrated optics, Silica, Waveguides, Transmittance, Optical filters, Optical fibers

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Proceedings Article | 7 February 2015 Paper

Optical OFDM signal generation using integrated-optic multiplexer based on optical IFFT

Koichi Takiguchi, Takaaki Miwa

Proceedings Volume 9389, 93890J (2015) https://doi.org/10.1117/12.2074235

KEYWORDS: Orthogonal frequency division multiplexing, Multiplexers, Integrated optics, Signal generators, Modulators, Signal processing, Waveguides, Directional couplers, Silica, Multiplexing

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Proceedings Article | 1 February 2014 Paper

Optical XOR circuit using combined technology of photonics and electronics

Koichi Takiguchi

Proceedings Volume 9009, 900904 (2014) https://doi.org/10.1117/12.2034007

KEYWORDS: Modulators, Electronics, Photonics, Binary data, Optical circuits, Picosecond phenomena, Signal attenuation, Optical amplifiers, Optical communications, Optical signal processing

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Showing 5 of 14 publications

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