Katsuyuki Utaka

2020

Regional Bandgap Tailoring of 1550 nm-Band InAs Quantum Dot Intermixing by Controlling Ion Implantation Depth

Isawa, S., Akashi, Y., Morita, R., Kaneko, R., Okada, H., Matsumoto, A., Akahane, K., Matsushima, Y., Ishikawa, H. & Utaka, K., 2020 Feb 1, In : Physica Status Solidi (A) Applications and Materials Science. 217, 3, 1900521.

Research output: Contribution to journal › Article

The 1200 nm-Band InAs/GaAs Quantum Dot Intermixing by Dry Etching and Ion Implantation

Hiraishi, Y., Shirai, T., Kwoen, J., Ito, T., Matsushima, Y., Ishikawa, H., Arakawa, Y. & Utaka, K., 2020 May 1, In : Physica Status Solidi (A) Applications and Materials Science. 217, 10, 1900851.

Research output: Contribution to journal › Article

2019

Compact and High Sensitive Swgms Bragg Grating on Soi Platform for Refractive Index Sensing

Heinsalu, S., Matsushima, Y., Ishikawa, H. & Utaka, K., 2019 Nov, MOC 2019 - 24th Microoptics Conference. Institute of Electrical and Electronics Engineers Inc., p. 148-149 2 p. 8982828. (MOC 2019 - 24th Microoptics Conference).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Demonstration of All-Optical Logic Gate Device Using MQW-SOA and 10 Gbps XNOR Operation

Akashi, Y., Matsui, S., Isawa, S., Matsushita, A., Matsumoto, A., Matsushima, Y., Ishikawa, H. & Utaka, K., 2019 Jan 9, In : Physica Status Solidi (A) Applications and Materials Science. 216, 1, 1800529.

Research output: Contribution to journal › Article

1 Citation (Scopus)

InAs/GaAs Quantum Dot Intermixing by Dry Etching and Ion Implantation

Hiraishi, Y., Shirai, T., Kwoen, J., Matushima, Y., Ishikawa, H., Arakawa, Y. & Utaka, K., 2019 May, 2019 Compound Semiconductor Week, CSW 2019 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 8819072. (2019 Compound Semiconductor Week, CSW 2019 - Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Polymer interconnection waveguide for multi-core fibers using 45° mirror and self-formation lens

Hikima, D., Ishii, T., Suzuki, D., Matsushima, Y., Ishikawa, H. & Utaka, K., 2019 Nov, MOC 2019 - 24th Microoptics Conference. Institute of Electrical and Electronics Engineers Inc., p. 114-115 2 p. 8982886. (MOC 2019 - 24th Microoptics Conference).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Regional band-gap tailoring of 1550nm-band InAs quantum dot Intermixing by controlling ion implantation depth

Isawa, S., Akashi, Y., Matsumoto, A., Akahane, K., Matsushima, Y., Ishikawa, H. & Utaka, K., 2019 May, 2019 Compound Semiconductor Week, CSW 2019 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 8819190. (2019 Compound Semiconductor Week, CSW 2019 - Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Theoretical and experimental analysis on ar implantation-induced quantum dot intermixing for 1550 NM-band photonic integrated circuit

Matsumoto, A., Akashi, Y., Isawa, S., Umezawa, T., Matsushima, Y. & Utaka, K., 2019 Jan 1, CLEO: Applications and Technology, CLEO_AT 2019. OSA - The Optical Society, (Optics InfoBase Conference Papers; vol. Part F127-CLEO_AT 2019).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Theoretical and experimental analysis on Ar Implantation-Induced Quantum Dot Intermixing for 1550 nm-Band Photonic Integrated Circuit

Matsumoto, A., Akashi, Y., Isawa, S., Umezawa, T., Matsushima, Y. & Utaka, K., 2019 May 1, 2019 Conference on Lasers and Electro-Optics, CLEO 2019 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 8749850. (2019 Conference on Lasers and Electro-Optics, CLEO 2019 - Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2018

Analysis on Si modified MMI-waveguide-type optical switch operated with carrier injection

Shirai, T., Ishikawa, A., Matsushima, Y., Ishikawa, H. & Utaka, K., 2018 Jan 2, 22nd Microoptics Conference, MOC 2017. Institute of Electrical and Electronics Engineers Inc., Vol. 2018-January. p. 316-317 2 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Lasing characteristics of intermixed highly-stacked quantum dot structure by ion implantation for wavelength-manipulated light sources

Matsui, S., Akashi, Y., Isawa, S., Matsumoto, A., Akahane, K., Matsushima, Y., Ishikawa, H. & Utaka, K., 2018 Jan 2, 22nd Microoptics Conference, MOC 2017. Institute of Electrical and Electronics Engineers Inc., Vol. 2018-January. p. 92-93 2 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Simultaneous High-speed and Polarization-Independent Switching Operation of 2x2 Silicon Mach-Zehnder-Type Optical Switch

Shimizu, K., Shirai, T., Matsushima, Y., Ishikawa, H. & Utaka, K., 2018 Sep, Proceedings of the 2018 Photonics in Switching and Computing, PSC 2018. Manousakis, K., Iezekiel, S., Tomkos, I., Utaka, K. & Ellinas, G. (eds.). Institute of Electrical and Electronics Engineers Inc., 8751428. (Proceedings of the 2018 Photonics in Switching and Computing, PSC 2018).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Welcome note

Iezekiel, S., Tomkos, I., Utaka, K., Calabretta, N., Marom, D., Takahashi, R., Taubenblatt, M. & Ellinas, G., 2018 Sep 1, In : Proceedings of the 2018 Photonics in Switching and Computing, PSC 2018. 8751221.

Research output: Contribution to journal › Editorial

2017

Device design of silicon 2×2 mach-zehnder-type optical switch for polarization-independent operation

Shimizu, K., Asakawa, S., Suehiro, D., Matsushima, Y., Ishikawa, H. & Utaka, K., 2017 Jan 1, Advanced Photonics, PS 2017. OSA - The Optical Society, Vol. Part F57-PS 2017.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Fundamental characteristics of double-reflection waveguide-type kretschmann-structure surface plasmon resonance (SPR) sensor for high-sensitiviy and wide-measurable range

Tansho, H., Konuma, S., Matsushima, Y., Ishikawa, H. & Utaka, K., 2017 Nov 22, 2017 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2017. Institute of Electrical and Electronics Engineers Inc., Vol. 2017-January. p. 1-2 2 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Fundamental characteristics of double-reflection waveguide-type Kretschmann-structure surface plasmon resonance (SPR) sensor for high-sensitiviy and wide-measurable range

Tansho, H., Konuma, S., Matsushima, Y., Ishikawa, H. & Utaka, K., 2017 Jan 1, Conference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017. OSA - The Optical Society, Vol. Part F122-CLEOPR 2017. s2084

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Polarization-independent and colorless switching operation of three-dimensional 4 - 4 polymer optical switch with two-layered waveguide structure

Kimura, Y., Kobayashi, H., Ema, K., Matsushima, Y., Ishikawa, H. & Utaka, K., 2017 Dec 1, In : Japanese Journal of Applied Physics. 56, 12, 120304.

Research output: Contribution to journal › Article

1 Citation (Scopus)

Quantum-dot-based advanced photonic devices and its applications

Matsumoto, A., Akahane, K., Umezawa, T., Kita, T., Utaka, K. & Yamamoto, N., 2017 Aug 9, Asia Communications and Photonics Conference, ACP 2017. OSA - The Optical Society, Vol. 2017-August. M1D.6

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Thermally stable Ar-implantation-induced intermixed quantum dot laser diode in high-temperature region

Matsumoto, A., Akahane, K., Matsui, S., Akashi, Y., Umezawa, T., Yamamoto, N., Matsushima, Y., Ishikawa, H. & Utaka, K., 2017 Jan 1, The European Conference on Lasers and Electro-Optics, CLEO_Europe 2017. OSA - The Optical Society, Vol. Part F82-CLEO_Europe 2017.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Three-dimensional 4×4 polymer optical switch using vertical multimode interference couplers for flexible expansion of connectable vertical distant

Kimura, Y., Ema, K., Matsushima, Y., Ishikawa, H. & Utaka, K., 2017 Nov 17, 2017 Opto-Electronics and Communications Conference, OECC 2017 and Photonics Global Conference, PGC 2017. Institute of Electrical and Electronics Engineers Inc., Vol. 2017-November. p. 1-2 2 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2016

Analysis of polymer double-reflection waveguide-type Kretschmann-structure surface plasmon resonance sensor for high-sensitive and wide-measurable range

Tansho, H., Kuroda, Y., Ishikawa, H., Matsushima, Y. & Utaka, K., 2016 Feb 23, MOC 2015 - Technical Digest of 20th Microoptics Conference. Institute of Electrical and Electronics Engineers Inc., 7416525

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Ar implantation-induced quantum dot intermixing technique for 1550 nm-band highly stacked QD photonic integrated circuit

Matsumoto, A., Takei, Y., Akahane, K., Matsui, S., Umezawa, T., Yamamoto, N., Matsushima, Y. & Utaka, K., 2016 Dec 16, 2016 Conference on Lasers and Electro-Optics, CLEO 2016. Institute of Electrical and Electronics Engineers Inc., 7788806. (2016 Conference on Lasers and Electro-Optics, CLEO 2016).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Colorless and polarization-independent polymer two-layered 4×4 optical switch for three-dimensional optical interconnection

Kimura, Y., Ema, K., Matsushima, Y., Ishikawa, H. & Utaka, K., 2016 Feb 23, MOC 2015 - Technical Digest of 20th Microoptics Conference. Institute of Electrical and Electronics Engineers Inc., 7416519

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Photonic integrated device of highly-stacked quantum dot using quantum dot intermixing by ion implantation

Matsui, S., Takei, Y., Matsumoto, A., Akahane, K., Matsushima, Y., Ishikawa, H. & Utaka, K., 2016 Aug 1, 2016 Compound Semiconductor Week, CSW 2016 - Includes 28th International Conference on Indium Phosphide and Related Materials, IPRM and 43rd International Symposium on Compound Semiconductors, ISCS 2016. Institute of Electrical and Electronics Engineers Inc., 7528583

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Citations (Scopus)

2015

Gain characteristics and femto-second optical pulse response of 1550 nm-band multi-stacked QD-SOA grown on InP(311)B substrate

Matsumoto, A., Takei, Y., Matsushita, A., Akahane, K., Matsushima, Y., Ishikawa, H. & Utaka, K., 2015 Jun 1, In : Optics Communications. 344, p. 51-54 4 p.

Research output: Contribution to journal › Article

12 Citations (Scopus)

Performance simulation of novel silicon cross-waveguide reflection-type optical switch

Shimada, Y., Fujiwara, Y., Matsumoto, A., Ishikawa, A., Matsushima, Y., Ishikawa, H. & Utaka, K., 2015 Nov 13, 2015 International Conference on Photonics in Switching, PS 2015. Institute of Electrical and Electronics Engineers Inc., p. 58-60 3 p. 7328952

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2014

Design and performance of low-power, high-speed, polarization-independent and wideband polymer buried-channel waveguide thermo-optic switches

Xie, N., Hashimoto, T. & Utaka, K., 2014 Sep 1, In : Journal of Lightwave Technology. 32, 17, p. 3067-3073 7 p., 6848781.

Research output: Contribution to journal › Article

17 Citations (Scopus)

Experimental and calculated gain characteristics of 1550nm-band QD-SOA grown on InP(311)B substrate for ultra-fast all-optical logic gate devices

Matsumoto, A., Takei, Y., Matsushita, A., Akahane, K., Matsushima, Y. & Utaka, K., 2014 Jan 1, 2014 OptoElectronics and Communication Conference, OECC 2014 and Australian Conference on Optical Fibre Technology, ACOFT 2014. IEEE Computer Society, p. 718-719 2 p. 6888244. (2014 OptoElectronics and Communication Conference, OECC 2014 and Australian Conference on Optical Fibre Technology, ACOFT 2014).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Gain characteristics and femto-second optical pulse response of 1550nm-band QD-SOA for ultra-fast all-optical logic gate devices

Matsumoto, A., Takei, Y., Matsushita, A., Akahane, K., Matsushima, Y. & Utaka, K., 2014 Jan 1, 26th International Conference on Indium Phosphide and Related Materials, IPRM 2014. Institute of Electrical and Electronics Engineers Inc., 6880561. (Conference Proceedings - International Conference on Indium Phosphide and Related Materials).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

High-speed and cNon-blocking 8×8 InAlGaAs/InAlAs Mach-Zehnder-Type optical switch fabric

Kouketsu, H., Kawasaki, S., Koyama, N., Takei, A., Taniguchi, T., Matsushima, Y. & Utaka, K., 2014 Mar 3, Optical Fiber Communication Conference, OFC 2014. Optical Society of America (OSA), (Optical Fiber Communication Conference, OFC 2014).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Citations (Scopus)

High-speed and compact non-blocking 8×8 InAlGaAs/InAlAs Mach-Zehnder-type optical switch fabric

Kouketsu, H., Kawasaki, S., Koyama, N., Takei, A., Taniguchi, T., Matsushima, Y. & Utaka, K., 2014 Jan 1, 2014 Optical Fiber Communications Conference and Exhibition, OFC 2014. Institute of Electrical and Electronics Engineers Inc., 6886566. (Conference on Optical Fiber Communication, Technical Digest Series).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

7 Citations (Scopus)

High-speed and compact non-blocking 8×8 InAlGaAs/InAlAs Mach-Zehnder-type optical switch fabric

Kouketsu, H., Kawasaki, S., Koyama, N., Takei, A., Taniguchi, T., Matsushima, Y. & Utaka, K., 2014, Optical Fiber Communication Conference, OFC 2014. Optical Society of America (OSA), (Optics InfoBase Conference Papers).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

High-speed and compact non-blocking 8×8 InAlGaAs/InAlAs Mach-Zehnder-type optical switch fabric

Kouketsu, H., Kawasaki, S., Koyama, N., Takei, A., Taniguchi, T., Matsushima, Y. & Utaka, K., 2014 Jan 1, Optical Fiber Communication Conference, OFC 2014. Optical Society of America, (Optics InfoBase Conference Papers).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Improved characteristics of polymer waveguide-type Kretschmann-structure surface plasmon resonance sensor at 1500nm wavelength range

Kuroda, Y., Hidaka, N., Matsushima, Y. & Utaka, K., 2014 Jan 1, 2014 OptoElectronics and Communication Conference, OECC 2014 and Australian Conference on Optical Fibre Technology, ACOFT 2014. IEEE Computer Society, p. 726-727 2 p. 6888247. (2014 OptoElectronics and Communication Conference, OECC 2014 and Australian Conference on Optical Fibre Technology, ACOFT 2014).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Intermixing of InP-based quantum dots and application to micro-ring resonator wavelength-selective filter for photonic integrated devices

Matsumoto, A., Matsushita, A., Takei, Y., Akahane, K., Matsushima, Y., Ishikawa, H. & Utaka, K., 2014 Sep 1, In : Applied Physics Express. 7, 9, 092801.

Research output: Contribution to journal › Article

13 Citations (Scopus)

Micro-ring-resonator wavelength-selective filter using highly-stacked quantum dot intermixed waveguide

Takei, Y., Matsumoto, A., Matsushita, A., Akahane, K., Matsushima, Y. & Utaka, K., 2014 Jan 1, 26th International Conference on Indium Phosphide and Related Materials, IPRM 2014. Institute of Electrical and Electronics Engineers Inc., 6880523. (Conference Proceedings - International Conference on Indium Phosphide and Related Materials).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Nonlinear optical property of CNT embedded in Si slot waveguide

Fukuda, K., Yamada, S., Kuwae, H., Mizuno, J., Takashima, T., Matsushima, Y. & Utaka, K., 2014 Jan 1, 2014 OptoElectronics and Communication Conference, OECC 2014 and Australian Conference on Optical Fibre Technology, ACOFT 2014. IEEE Computer Society, p. 1041-1042 2 p. 6888365. (2014 OptoElectronics and Communication Conference, OECC 2014 and Australian Conference on Optical Fibre Technology, ACOFT 2014).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2013

Fundamental characteristics of 1550nm-band 20-layer-stacked QD-SOA grown on InP(311)B substrate for all-optical logic gate device

Matsumoto, A., Takei, Y., Matsushita, A., Akahane, K., Matsushima, Y. & Utaka, K., 2013 Dec 1, Technical Digest of the 18th Microoptics Conference, MOC 2013. 6715095. (Technical Digest of the 18th Microoptics Conference, MOC 2013).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Citations (Scopus)

Fundamental switching operation of polymer three-dimensional optical interconnection switch

Kobayashi, H., Hoshina, T., Yuzawa, G., Wakamatsu, K., Matsushima, Y. & Utaka, K., 2013 Oct 28, 2013 18th OptoElectronics and Communications Conference Held Jointly with 2013 International Conference on Photonics in Switching, OECC/PS 2013. 6597468. (2013 18th OptoElectronics and Communications Conference Held Jointly with 2013 International Conference on Photonics in Switching, OECC/PS 2013).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Intermixing of highly-stacked InAs/InGaAlAs quantum dots grown on InP (311)B substrate by SiO₂ sputtering and annealing technique

Matsushita, A., Matsumoto, A., Akahane, K., Matsushima, Y. & Utaka, K., 2013 Aug 26, 2013 International Conference on Indium Phosphide and Related Materials, IPRM 2013. 6562629. (Conference Proceedings - International Conference on Indium Phosphide and Related Materials).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Non-blocking 4×4 InAlGaAs/InAlAs Mach-Zehnder-type optical switch fabric

Koyama, N., Kouketsu, H., Kawasaki, S., Takei, A., Taniguchi, T., Matsushima, Y. & Utaka, K., 2013 Aug 26, 2013 International Conference on Indium Phosphide and Related Materials, IPRM 2013. 6562620. (Conference Proceedings - International Conference on Indium Phosphide and Related Materials).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Citations (Scopus)

Numerical analysis of ultrafast performances of all-optical logic-gate devices integrated with InAs QD-SOA and ring resonators

Matsumoto, A., Kuwata, K., Matsushita, A., Akahane, K. & Utaka, K., 2013 Jan 1, In : IEEE Journal of Quantum Electronics. 49, 1, p. 51-58 8 p., 6332458.

Research output: Contribution to journal › Article

24 Citations (Scopus)

Polymer waveguide-type Kretschmann-structure surface plasmon sensor at 1550nm wavelength range

Hidaka, N., Kuroda, Y., Matsushima, Y. & Utaka, K., 2013 Dec 1, Technical Digest of the 18th Microoptics Conference, MOC 2013. 6715136. (Technical Digest of the 18th Microoptics Conference, MOC 2013).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Polymer wavelength-selective filter using high-mesa structure directly-coupled double micro-ring resonators

Takei, Y., Matsumoto, A., Matsushita, A., Akahane, K., Matsushima, Y. & Utaka, K., 2013 Dec 1, Technical Digest of the 18th Microoptics Conference, MOC 2013. 6715087. (Technical Digest of the 18th Microoptics Conference, MOC 2013).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Structural dependence of the switching characteristics of 2×2 InAlGaAs/InAlAs Mach-Zehnder-type optical switch

Kawasaki, S., Koketsu, H., Koyama, N., Takei, A., Taniguchi, T., Matsushima, Y. & Utaka, K., 2013 Dec 1, Technical Digest of the 18th Microoptics Conference, MOC 2013. 6715113. (Technical Digest of the 18th Microoptics Conference, MOC 2013).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2012

4 ×4 InAlGaAs/InAlAs optical-switch fabric by cascading mach-zehnder interferometer-type optical switches with low-power and low-polarization- dependent operation

Ueda, Y., Koyama, N., Kambayashi, K., Fujimoto, S., Utaka, K., Shiota, T. & Kitatani, T., 2012 Apr 26, In : IEEE Photonics Technology Letters. 24, 9, p. 757-759 3 p., 6151035.

Research output: Contribution to journal › Article

10 Citations (Scopus)

Low power consumption optical switches for high- to low-end applications

Utaka, K., 2012 Dec 1, 2012 International Conference on Photonics in Switching, PS 2012. 6608343. (2012 International Conference on Photonics in Switching, PS 2012).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Polymer micro-ring-resonator wavelength-selective filter

Matsushita, A., Kuwata, K., Matsumoto, A. & Utaka, K., 2012 Oct 23, Technical Digest - 2012 17th Opto-Electronics and Communications Conference, OECC 2012. p. 267-268 2 p. 6276473. (Technical Digest - 2012 17th Opto-Electronics and Communications Conference, OECC 2012).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Proposal of polymer three-dimensional optical switch and demonstration of fundamental transmission characteristics of passive optical interconnection circuit

Hoshina, T., Tatsuzaki, T., Yuzawa, G., Kobayashi, H., Matsushima, Y. & Utaka, K., 2012 Dec 1, 2012 38th European Conference and Exhibition on Optical Communications, ECOC 2012. 6705990. (European Conference on Optical Communication, ECOC).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Proposal of polymer three-dimensional optical switch and demonstration of fundamental transmission characteristics of passive optical interconnection circuit

Hoshina, T., Tatsuzaki, T., Yuzawa, G., Kobayashi, H., Matsushima, Y. & Utaka, K., 2012 Dec 1.

Research output: Contribution to conference › Paper