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Research Output 1978 2019

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36 Citations (Scopus)

1. 5- mu M lambda /4-SHIFTED INGAASP/INP DFB LASERS.

Akiba, S., Usami, M. & Utaka, K., 1987, In : Journal of Lightwave Technology. LT-5, 11, p. 1564-1573 10 p.

Research output: Contribution to journalArticle

Distributed feedback lasers
distributed feedback lasers
Light sources
Heterojunctions
Feedback

1. 5 mu m RANGE InGaAsP/InP DISTRIBUTED FEEDBACK BURIED HETEROSTRUCTURE (DFB-BH) LASERS.

Sakai, K., Akiba, S., Utaka, K. & Matsushima, Y., 1982, In : Denshi Tokyo. 21, p. 22-24 3 p.

Research output: Contribution to journalArticle

Heterojunctions
Feedback
Lasers
Laser modes
Temperature
40 Citations (Scopus)

1. 5 mu m RANGE InGaAsP/InP DISTRIBUTED FEEDBACK LASERS.

Sakai, K., Utaka, K., Akiba, S. & Matsushima, Y., 1982 Aug, In : IEEE Journal of Quantum Electronics. QE-18, 8, p. 1272-1278 7 p.

Research output: Contribution to journalArticle

lasing
Feedback
thresholds
Lasers
Distributed feedback lasers
28 Citations (Scopus)

1 multiplied by (times) 5-1 multiplied by (times) 6 mu m GaInAsP/InP INTEGRATED TWIN-GUIDE LASERS WITH FIRST-ORDER DISTRIBUTED BRAGG REFLECTORS.

Utaka, K., Kobayashi, K., Kishino, K. & Suematsu, Y., 1980 Jun 5, In : Electronics Letters. 16, 12, p. 455-456 2 p.

Research output: Contribution to journalArticle

Distributed Bragg reflectors
Lasers
Wavelength
Temperature
16 Citations (Scopus)

280 MBIT/S SINGLE-MODE FIBRE TRANSMISSION WITH DFB LASER DIODE EMITTING AT 1. 53 mu m.

Yamamoto, S., Utaka, K., Akiba, S., Sakai, K., Matsushima, Y., Sakaguchi, S. & Seki, N., 1982 Mar 4, In : Electronics Letters. 18, 5, p. 239-240 2 p.

Research output: Contribution to journalArticle

Telecommunication systems
Telecommunication repeaters
Distributed feedback lasers
Single mode fibers
Semiconductor lasers
10 Citations (Scopus)

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, In : IEEE Photonics Technology Letters. 24, 9, p. 757-759 3 p., 6151035.

Research output: Contribution to journalArticle

Mach-Zehnder interferometers
Optical switches
switches
Polarization
polarization
58 Citations (Scopus)

ANALYSIS OF QUARTER-WAVE-SHIFTED DFB LASER.

Utaka, K., Akiba, S., Sakai, K. & Matsushima, Y., 1984 Jan 1, In : Electronics Letters. 20, 8, p. 326-327 2 p.

Research output: Contribution to journalArticle

Distributed feedback lasers
Mirrors
Wavelength
46 Citations (Scopus)

ASYMMETRIC lambda /4-SHIFTED InGaAsP/InP DFB LASERS.

Usami, M., Akiba, S. & Utaka, K., 1987 Jun, In : IEEE Journal of Quantum Electronics. QE-23, 6, p. 815-821 7 p.

Research output: Contribution to journalArticle

Feedback
Distributed feedback lasers
flat surfaces
shift
Quantum efficiency
9 Citations (Scopus)
DBR lasers
Distributed Bragg reflectors
Heterojunctions
Wavelength
Lasers

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., 2018 Jan 1, (Accepted/In press) In : Physica Status Solidi (A) Applications and Materials Science.

Research output: Contribution to journalArticle

Semiconductor optical amplifiers
Logic gates
Four wave mixing
light amplifiers
Semiconductor quantum wells
16 Citations (Scopus)

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 journalArticle

Mach-Zehnder interferometers
switches
high speed
optics
broadband

Different types of optoelectronic bistabilities in resonant-tunneling triangular-barrier optoelectronic switch (R-TOPS)

Sakata, H., Utaka, K. & Matsushima, Y., 1995 Jan 1, In : Electronics Letters. 31, 13, p. 1098-1099 2 p.

Research output: Contribution to journalArticle

Resonant tunneling
Optoelectronic devices
Switches
32 Citations (Scopus)

DISTRIBUTED FEEDBACK InGaAsP/InP LASERS WITH WINDOW REGION EMITTING AT 1. 5 mu m RANGE.

Akiba, S., Utaka, K., Sakai, K. & Matsushima, Y., 1983 Jun, In : IEEE Journal of Quantum Electronics. QE-19, 6, p. 1052-1056 5 p.

Research output: Contribution to journalArticle

Distributed feedback lasers
distributed feedback lasers
Feedback
Lasers
flat surfaces
93 Citations (Scopus)

EFFECT OF MIRROR FACETS ON LASING CHARACTERISTICS OF DISTRIBUTED FEEDBACK InGaAsP/InP LASER DIODES AT 1. 5 mu M RANGE.

Utaka, K., Akiba, S., Sakai, K. & Matsushima, Y., 1984 Mar, In : IEEE Journal of Quantum Electronics. QE-20, 3, p. 236-245 10 p.

Research output: Contribution to journalArticle

Distributed feedback lasers
lasing
flat surfaces
Mirrors
mirrors
2 Citations (Scopus)

Fabrication and evaluation of Bragg gratings on optimally designed silicon-on-insulator rib waveguides using electron-beam lithography

Wu, Z., Zhang, W., Wang, Z., Kai, G., Yuan, S., Dong, X., Utaka, K. & Wada, Y., 2006 Aug, In : Pan Tao Ti Hsueh Pao/Chinese Journal of Semiconductors. 27, 8, p. 1347-1350 4 p.

Research output: Contribution to journalArticle

Bragg gratings
Electron beam lithography
Silicon
Waveguides
lithography
23 Citations (Scopus)

Ga//xIn//1// minus //xAs//yP//1// minus //y/InP INJECTION LASER PARTIALLY LOADED WITH FIRST-ORDER DISTRIBUTED BRAGG REFLECTOR.

Kawanishi, H., Suematsu, Y., Utaka, K., Itaya, Y. & Arai, S., 1978 Aug, In : Archive for Rational Mechanics and Analysis. QE-15, 8, p. 701-706 6 p.

Research output: Contribution to journalArticle

Injection lasers
Distributed Bragg reflectors
Reflector
Injection
Wavelength
85 Citations (Scopus)

GaInAsP/InP integrated twin-guide lasers with first-order distributed bragg reflectors at 1.3 µm wavelength

Utaka, K., Suematsu, Y., Kobayashi, K. & Kawanishi, H., 1980, In : Japanese Journal of Applied Physics. 19, 3, p. L137-L140

Research output: Contribution to journalArticle

Distributed Bragg reflectors
Bragg reflectors
DBR lasers
Wavelength
Lasers
11 Citations (Scopus)

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 journalArticle

Service oriented architecture (SOA)
Laser pulses
Logic gates
Substrates
pulses
14 Citations (Scopus)

High sensitivity and high gain optical functional device: Triangular-barrier optoelectronic switch (TOPS)

Sakata, H., Utaka, K. & Matsushima, Y., 1994 Jan 1, In : Electronics Letters. 30, 21, p. 1792-1793 2 p.

Research output: Contribution to journalArticle

Phototransistors
Optical gain
Bias voltage
Optoelectronic devices
Switches
18 Citations (Scopus)

High-speed optical switching of InAlGaAs/InAlAs multi-mode interference photonic switch with partial index-modulation region (MIPS-P)

Kumai, S., Ishikawa, T., Okazaki, A., Hiroshi, Y., Utaka, K., Amanai, H., Kurihara, K. & Shimoyama, K., 2005, In : IEICE Electronics Express. 2, 23, p. 578-582 5 p.

Research output: Contribution to journalArticle

Optical switches
optical switching
switches
high speed
Modulation
55 Citations (Scopus)

HIGH-SPEED-RESPONSE INGAAS/INP HETEROSTRUCTURE AVALANCHE PHOTODIODE WITH INGAASP BUFFER LAYERS.

Matsushima, Y., AKIBA, S., SAKAI, K., KUSHIRO, Y., NODA, Y. & Utaka, K., 1982 Jan 1, In : ELECTRON LETT. V 18, N 22, p. 945-946 2 p.

Research output: Contribution to journalArticle

Avalanche photodiodes
Buffer layers
Heterojunctions
Piles
4 Citations (Scopus)

Implementation of tapered multimode interference lightwave combiner on silicon-on-insulator substrate with negligible back-reflection

Wu, Z., Nakamura, K., Honda, S., Utaka, K., Edura, T., Tsutsui, K. & Wada, Y., 2005, In : Japanese Journal of Applied Physics, Part 2: Letters. 44, 28-32

Research output: Contribution to journalArticle

Semiconductor optical amplifiers
insulators
interference
Silicon
silicon
4 Citations (Scopus)

Impurity doping in InP layer grown by metalorganic vapor-phase epitaxy using tertiarybutylphosphine and organic doping sources

Horita, M., Suzuki, M., Matsushima, Y. & Utaka, K., 1993, In : Journal of Applied Physics. 74, 7, p. 4737-4740 4 p.

Research output: Contribution to journalArticle

vapor phase epitaxy
impurities
controllability
organic compounds
electrical properties
1 Citation (Scopus)

InGaAs-CAP-MONITOR INTEGRATED 1. 55 mu m lambda /4-SHIFTED DFB LASERS WITH HIGHER OUTPUT DESIGN.

Usami, M., Akiba, S., Utaka, K. & Matsushima, Y., 1988 Aug, In : IEE proceedings. Part J, Optoelectronics. 135, 4, p. 289-297 9 p.

Research output: Contribution to journalArticle

Distributed feedback lasers
Lasers
Gaussian beams
Photodiodes
Coatings
13 Citations (Scopus)
Optical switches
Photonics
integrated circuits
Integrated circuits
switches
12 Citations (Scopus)

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 journalArticle

Photonics
Semiconductor quantum dots
Resonators
resonators
quantum dots
109 Citations (Scopus)

lambda /4-SHIFTED InGaAsP/InP DFB LASERS.

Utaka, K., Akiba, S., Sakai, K. & Matsushima, Y., 1986 Jul, In : IEEE Journal of Quantum Electronics. QE-22, 7, p. 1042-1051 10 p.

Research output: Contribution to journalArticle

Feedback
Wavelength
shift
Photoresists
Phase shift
74 Citations (Scopus)

lambda /4-SHIFTED InGaAsP/InP DFB LASERS BY SIMULTANEOUS HOLOGRAPHIC EXPOSURE OF POSITIVE AND NEGATIVE PHOTORESISTS.

Utaka, K., Akiba, S., Sakai, K. & Matsushima, Y., 1984 Jan 1, In : Electronics Letters. 20, 24, p. 1008-1010 3 p.

Research output: Contribution to journalArticle

Distributed feedback lasers
Photoresists
Wavelength
Phase shift
Scanning electron microscopy
15 Citations (Scopus)

Large area InP submicron two-dimensional (2D) periodic structures fabricated by two-time laser holography

Ohira, T., Segawa, T., Nagai, K., Utaka, K. & Nakao, M., 2002 Feb, In : Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 41, 2 B, p. 1085-1089 5 p.

Research output: Contribution to journalArticle

Periodic structures
Holography
holography
reflectance
Dry etching
32 Citations (Scopus)

Largely-tunable wideband Bragg gratings fabricated on SOI rib waveguides employed by deep-RIE

Honda, S., Wu, Z., Matsui, J., Utaka, K., Edura, T., Tokuda, M., Tsutsui, K. & Wada, Y., 2007, In : Electronics Letters. 43, 11, p. 630-631 2 p.

Research output: Contribution to journalArticle

Bragg gratings
Reactive ion etching
Waveguides
Silicon
Optics
66 Citations (Scopus)

LASING CHARACTERISTICS OF 1. 5-1. 6 mu m GaInAsP/InP INTEGRATED TWIN-GUIDE LASERS WITH FIRST-ORDER DISTRIBUTED BRAGG REFLECTORS.

Utaka, K., Kobayashi, K. I. & Suematsu, Y., 1980 May, In : IEEE Journal of Quantum Electronics. QE-17, 5, p. 651-658 8 p.

Research output: Contribution to journalArticle

DBR lasers
Distributed Bragg reflectors
Bragg reflectors
lasing
Lasers
15 Citations (Scopus)

LONGITUDINAL-MODE BEHAVIOUR OF lambda /4-SHIFTED InGaAsP/InP DFB LASERS.

Utaka, K., Akiba, S., Sakai, K. & Matsushima, Y., 1985 Jan 1, In : Electronics Letters. 21, 9, p. 367-369 3 p.

Research output: Contribution to journalArticle

Distributed feedback lasers
Phase shift
Modulation
Lasers
6 Citations (Scopus)
Plasma confinement
Heterojunctions
Waveguides
gratings
Polarization
32 Citations (Scopus)

LOW-THRESHOLD-CURRENT DISTRIBUTED-FEEBACK InGaAsP/InP cw LASERS.

Akiba, S., Utaka, K., Sakai, K. & Matsushima, Y., 1982 Jan 1, In : Electronics Letters. 18, 2, p. 77-78 2 p.

Research output: Contribution to journalArticle

Heterojunctions
Current density
Feedback
Lasers
Temperature
5 Citations (Scopus)

LOW THRESHOLD lambda /4-SHIFTED InGaAsP/InP DFB LASERS.

Usami, M., Akiba, S. & Utaka, K., 1986 Apr, In : Transactions of the Institute of Electronics and Communication Engineers of Japan. Section E. E69, 4, p. 385-388 4 p.

Research output: Contribution to journalArticle

Distributed feedback lasers
Temperature
5 Citations (Scopus)

MBE growth of InAs/AlInAs strained-layer multi quantum wells for optical device applications

Matsushima, Y., Kato, H., Utaka, K. & Sakai, K., 1989 Feb 2, In : Journal of Crystal Growth. 95, 1-4, p. 210-214 5 p.

Research output: Contribution to journalArticle

Optical devices
Molecular beam epitaxy
Semiconductor quantum wells
Photoluminescence
molecular beam epitaxy
1 Citation (Scopus)

Metalorganic vapor phase epitaxy growth of InGaAsP multi quantum well laser diodes using entirely organic sources

Horita, M., Tsurusawa, M., Utaka, K. & Matsushima, Y., 1994 Dec 2, In : Journal of Crystal Growth. 145, 1-4, p. 886-891 6 p.

Research output: Contribution to journalArticle

Quantum well lasers
Metallorganic vapor phase epitaxy
quantum well lasers
vapor phase epitaxy
Semiconductor quantum wells
1 Citation (Scopus)
Michelson interferometers
couplers
converters
Monolithic microwave integrated circuits
interference
39 Citations (Scopus)

Monolithic Integration of Laser and Amplifier/Detector by Twin-Guide Structure

Kishino, K., Suematsu, Y., Utaka, K. & Kawanishi, H., 1978, In : Japanese Journal of Applied Physics. 17, 3, p. 589-590 2 p.

Research output: Contribution to journalArticle

77 Citations (Scopus)

Multimode interference photonic switches (MIPS)

Nagai, S., Morishima, G., Inayoshi, H. & Utaka, K., 2002 Apr, In : Journal of Lightwave Technology. 20, 4, p. 675-681 7 p.

Research output: Contribution to journalArticle

Optical switches
switches
photonics
interference
Crosstalk
12 Citations (Scopus)

Narrow spectral linewidth of MBE-grown GaInAs/AlInAs MQW lasers in the 1.55 μm range

Matsushima, Y., Utaka, K. & Sakai, K., 1989 Jun, In : IEEE Journal of Quantum Electronics. 25, 6, p. 1376-1380 5 p.

Research output: Contribution to journalArticle

Quantum well lasers
quantum well lasers
Molecular beam epitaxy
Linewidth
molecular beam epitaxy

Nonblocking N×N integrated photonic switching architecture using rearrangeable nested rings

Xie, N. & Utaka, K., 2009, In : Optical Engineering. 48, 9, 095401.

Research output: Contribution to journalArticle

optical switching
Photonics
Optical feedback
rings
Switching networks
9 Citations (Scopus)

Novel bistable device; resonant-tunnelling triangular-barrier optoelectronic switch (R-TOPS)

Sakata, H., Utaka, K. & Matsushima, Y., 1994 Jan 1, In : Electronics Letters. 30, 20, p. 1714-1716 3 p.

Research output: Contribution to journalArticle

Phototransistors
Resonant tunneling diodes
Resonant tunneling
Optoelectronic devices
Switches
2 Citations (Scopus)

Novel wavelength-tunable active-filter-type laser diodes

Horita, M., Utaka, K. & Matsushima, Y., 1991 Jun, In : IEEE Journal of Quantum Electronics. 27, 6, p. 1625-1629 5 p.

Research output: Contribution to journalArticle

Active filters
Semiconductor lasers
Tuning
semiconductor lasers
tuning
24 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, In : IEEE Journal of Quantum Electronics. 49, 1, p. 51-58 8 p., 6332458.

Research output: Contribution to journalArticle

Semiconductor optical amplifiers
Logic gates
light amplifiers
numerical analysis
logic
36 Citations (Scopus)

Operational design on high-speed semiconductor optical amplifier with assist light for application to wavelength converters using cross-phase modulation

Matsumoto, A., Nishimura, K., Utaka, K. & Usami, M., 2006 Mar, In : IEEE Journal of Quantum Electronics. 42, 3, p. 313-323 11 p., 01597418.

Research output: Contribution to journalArticle

Semiconductor optical amplifiers
Phase modulation
light amplifiers
phase modulation
converters
Resonant tunneling
resonant tunneling
Optoelectronic devices
switches
Switches
1 Citation (Scopus)

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 journalArticle

Optical switches
Waveguides
switches
Polarization
waveguides
16 Citations (Scopus)

Polarization-independent low-crosstalk operation of InAlGaAs-InAlAs mach-zehnder interferometer-type photonic switch with hybrid waveguide structure

Ueda, Y., Nakamura, S., Fujimoto, S., Yamada, H., Utaka, K., Shiota, T. & Kitatani, T., 2009 Aug 15, In : IEEE Photonics Technology Letters. 21, 16, p. 1118-1120 3 p.

Research output: Contribution to journalArticle

Mach-Zehnder interferometers
Optical switches
Crosstalk
crosstalk
Waveguides
1 Citation (Scopus)

Resonant-tunneling triangular-barrier optoelectronic switch by gas source molecular beam epitaxy

Sakata, H., Utaka, K. & Matsushima, Y., 1995 May 1, In : Journal of Crystal Growth. 150, 1 -4 pt 2, p. 1389-1394 6 p.

Research output: Contribution to journalArticle

Gas source molecular beam epitaxy
Phototransistors
Resonant tunneling diodes
Resonant tunneling
resonant tunneling