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Research Output 1978 2019

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1978
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
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

4 Citations (Scopus)

Twin-Guide Laser with Narrow Radiation Angle

Utaka, K., Kishino, K. & Suematsu, Y., 1978, In : Japanese Journal of Applied Physics. 17, 4, p. 751-752 2 p.

Research output: Contribution to journalArticle

1980
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
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
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
37 Citations (Scopus)

SINGLE-MODE OSCILLATION UNDER HIGH-SPEED DIRECT MODULATION IN GaInAsP/InP INTEGRATED TWIN-GUIDE LASERS WITH DISTRIBUTED BRAGG REFLECTORS.

Sakakibara, Y., Furuya, K., Utaka, K. & Suematsu, Y., 1980 Jun 5, In : Electronics Letters. 16, 12, p. 456-458 3 p.

Research output: Contribution to journalArticle

Distributed Bragg reflectors
Modulation
Lasers
1981
9 Citations (Scopus)
DBR lasers
Distributed Bragg reflectors
Heterojunctions
Wavelength
Lasers
89 Citations (Scopus)

ROOM-TEMPERATURE cw OPERATION OF DISTRIBUTED-FEEDBACK BURIED-HETEROSTRUCTURE InGaAsP/InP LASERS EMITTING AT 1. 57 mu m.

Utaka, K., Akiba, S., Sakai, K. & Matsushima, Y., 1981 Jan 1, In : Electronics Letters. 17, 25-26, p. 961-963 3 p.

Research output: Contribution to journalArticle

Heterojunctions
Feedback
Lasers
Laser modes
Wavelength
27 Citations (Scopus)
DBR lasers
Distributed Bragg reflectors
Heterojunctions
Modulation
Wavelength
1982

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
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
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
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
1983
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
1984
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
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
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
1985
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
1986
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
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
7 Citations (Scopus)
Threshold current density
Distributed feedback lasers
Laser modes
Waveguides
1987
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
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
15 Citations (Scopus)

ROOM-TEMPERATURE CW OPERATION OF MBE-GROWN GaInAs/AlInAs MQW LASERS IN 1. 5 mu M RANGE.

Matsushima, Y., Utaka, K., Sakai, K. & Takeuchi, O., 1987 Jan 1, In : Electronics Letters. 23, 24, p. 1271-1273 3 p.

Research output: Contribution to journalArticle

Injection lasers
Molecular beam epitaxy
Wavelength
Temperature
2 Citations (Scopus)

SPECTRAL BEHAVIOUR OF AGED 1. 55 mu M lambda /4-SHIFTED DFB LASERS.

Akiba, S., Matsushima, Y., Usami, M. & Utaka, K., 1987 Jan 1, In : Electronics Letters. 23, 7, p. 316-318 3 p.

Research output: Contribution to journalArticle

Wavelength
Degradation
Distributed feedback lasers
Laser modes
Lasers
6 Citations (Scopus)

Vertical integration of an InGaAsP/InP heterojunction bipolar transistor and a double heterostructure laser

Chen, T. R., Utaka, K., Zhuang, Y. H., Liu, Y. Y. & Yariv, A., 1987, In : Applied Physics Letters. 50, 14, p. 874-876 3 p.

Research output: Contribution to journalArticle

bipolar transistors
heterojunctions
lasers
mesas
optical switching
14 Citations (Scopus)

VERTICAL MONOLITHIC COMBINATION OF AN InGaAsP/InP LASER AND A HETEROJUNCTION BIPOLAR TRANSISTOR.

Chen, T. R., Utaka, K., Utaka, K., Liu, Y. Y. & Yariv, A., 1987 Jun, In : IEEE Journal of Quantum Electronics. QE-23, 6, p. 919-924 6 p.

Research output: Contribution to journalArticle

Heterojunction bipolar transistors
bipolar transistors
heterojunctions
Lasers
lasers
1988
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
1989
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
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
1991
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
1992
63 Citations (Scopus)

Transform-limited 14 ps optical pulse generation with 15 GHz repetition rate by InGaAsP electroabsorption modulator

Suzuki, M., Tanaka, H., Utaka, K., Edagawa, N. & Matsushima, Y., 1992 Jan 1, In : Electronics Letters. 28, 11, p. 1007-1008 2 p.

Research output: Contribution to journalArticle

Electroabsorption modulators
Laser pulses
Mathematical transformations
Optical resonators
Pulse compression
1993
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
70 Citations (Scopus)

Transform-limited optical pulse generation up to 20-GHz repetition rate by a sinusoidally driven InGaAsP electroabsorption modulator

Suzuki, M., Tanaka, H., Edagawa, N., Utaka, K. & Matsushima, Y., 1993 Mar, In : Journal of Lightwave Technology. 11, 3, p. 468-473 6 p.

Research output: Contribution to journalArticle

Electroabsorption modulators
modulators
Laser pulses
repetition
Mathematical transformations
9 Citations (Scopus)

Wavelength-tunable InGaAsP-InP multiple-λ/4-shifted distributed feedback laser

Horita, M., Utaka, K., Matsushima, Y. & Matsushima, Y., 1993 Jun, In : IEEE Journal of Quantum Electronics. 29, 6, p. 1810-1816 7 p.

Research output: Contribution to journalArticle

Distributed feedback lasers
distributed feedback lasers
frequency modulation
Linewidth
Wavelength
1994
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
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
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
1995

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
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
3 Citations (Scopus)

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. 1384-1388 5 p.

Research output: Contribution to journalArticle

Gas source molecular beam epitaxy
Phototransistors
Optoelectronic devices
molecular beam epitaxy
switches
1996
Resonant tunneling
resonant tunneling
Optoelectronic devices
switches
Switches
1999
13 Citations (Scopus)
Optical switches
Photonics
integrated circuits
Integrated circuits
switches
2000
53 Citations (Scopus)

Versatile multimode interference photonic switches with partial index-modulation regions

Yagi, M., Nagai, S., Inayoshi, H. & Utaka, K., 2000 Mar 16, In : Electronics Letters. 36, 6, p. 533-534 2 p.

Research output: Contribution to journalArticle

Optical switches
Modulation
Beam propagation method
Crosstalk
2002
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
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
2004
1 Citation (Scopus)
Michelson interferometers
couplers
converters
Monolithic microwave integrated circuits
interference
2005
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