MEASUREMENT OF COUPLING COEFFICIENT AND COUPLING LENGTH OF GaAs/AlGaAs INTEGRATED TWIN-GUIDE INJECTION LASERS PREPARED BY LIQUID-PHASE-EPITAXY.

Katsuyuki Utaka, Yasuharu Suematsu, Katsumi Kishino, Hideo Kawanishi

Research output: Chapter in Book/Report/Conference proceedingChapter

7 Citations (Scopus)

Abstract

The integrated twin-guide (ITG) structure which consists of an active guide and a low-loss passive output guide is considered to be one of the suitable structures for realization of integrated optical circuits. This paper gives an experimental result on the measurement of the maximum coupling coefficient and the coupling length between the active waveguide and the passive output waveguide in GaAs/AlGaAs ITG injection lasers prepared by liquid-phase-epitaxy. Very high coupling efficiency between the active and the passive waveguides was experimentally confirmed. The maximum coupling coefficient and the coupling length were measured to be about 90% and 250 mu m, respectively. These values were in agreement with theory. At properly chosen parameters, the threshold current density on an ″ITG-type″ laser was as low as 3kA/cm**2 at room temperature.

Original languageEnglish
Title of host publicationTrans Inst Electron Commun Eng Jpn Sect E (Engl)
Pages319-323
Number of pages5
VolumeE62
Edition5
Publication statusPublished - 1979 May
Externally publishedYes

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Injection lasers
Liquid phase epitaxy
Waveguides
Threshold current density
Networks (circuits)
Lasers
Temperature

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Utaka, K., Suematsu, Y., Kishino, K., & Kawanishi, H. (1979). MEASUREMENT OF COUPLING COEFFICIENT AND COUPLING LENGTH OF GaAs/AlGaAs INTEGRATED TWIN-GUIDE INJECTION LASERS PREPARED BY LIQUID-PHASE-EPITAXY. In Trans Inst Electron Commun Eng Jpn Sect E (Engl) (5 ed., Vol. E62, pp. 319-323)

MEASUREMENT OF COUPLING COEFFICIENT AND COUPLING LENGTH OF GaAs/AlGaAs INTEGRATED TWIN-GUIDE INJECTION LASERS PREPARED BY LIQUID-PHASE-EPITAXY. / Utaka, Katsuyuki; Suematsu, Yasuharu; Kishino, Katsumi; Kawanishi, Hideo.

Trans Inst Electron Commun Eng Jpn Sect E (Engl). Vol. E62 5. ed. 1979. p. 319-323.

Research output: Chapter in Book/Report/Conference proceedingChapter

Utaka, K, Suematsu, Y, Kishino, K & Kawanishi, H 1979, MEASUREMENT OF COUPLING COEFFICIENT AND COUPLING LENGTH OF GaAs/AlGaAs INTEGRATED TWIN-GUIDE INJECTION LASERS PREPARED BY LIQUID-PHASE-EPITAXY. in Trans Inst Electron Commun Eng Jpn Sect E (Engl). 5 edn, vol. E62, pp. 319-323.
Utaka K, Suematsu Y, Kishino K, Kawanishi H. MEASUREMENT OF COUPLING COEFFICIENT AND COUPLING LENGTH OF GaAs/AlGaAs INTEGRATED TWIN-GUIDE INJECTION LASERS PREPARED BY LIQUID-PHASE-EPITAXY. In Trans Inst Electron Commun Eng Jpn Sect E (Engl). 5 ed. Vol. E62. 1979. p. 319-323
Utaka, Katsuyuki ; Suematsu, Yasuharu ; Kishino, Katsumi ; Kawanishi, Hideo. / MEASUREMENT OF COUPLING COEFFICIENT AND COUPLING LENGTH OF GaAs/AlGaAs INTEGRATED TWIN-GUIDE INJECTION LASERS PREPARED BY LIQUID-PHASE-EPITAXY. Trans Inst Electron Commun Eng Jpn Sect E (Engl). Vol. E62 5. ed. 1979. pp. 319-323
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