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Research Output 1978 2019

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Article
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
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
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
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
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
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
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