1.5-μm λ/4-Shifted InGaAsP/InP DFB Lasers

Shigeyuki Akiba; Masashi Usami; Katsuyuki Utaka

doi:10.1109/JLT.1987.1075453

1.5-μm λ/4-Shifted InGaAsP/InP DFB Lasers

Shigeyuki Akiba, Masashi Usami, Katsuyuki Utaka

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

A single wavelength light source in 1.5-μm range was developed using InGaAsP/InP λ/4-shifted distributed feedback (DFB) semiconductor heterostructures, Superiority of the λ/4-shifted DFB structure in terms of stability of the main mode at the Bragg wavelength was shown theoretically, in which the threshold, the output, and the polarization characteristics were taken into account, A λ/4-shifted corrugated grating was made by a newly developed negative and positive photoresists technique. Buried heterostructure (BH) diode Lasers with nonreflective window ends were fabricated and highly stable single-mode operation with a low threshold was obtained reproducibly. Direct modulation properties and life-tests results indicated that the λ/4-shifted DFB lasers could be a reliable single-mode light source in a long span lightwave transmission system in 1.5-μm range.

Original language	English
Pages (from-to)	1564-1573
Number of pages	10
Journal	Journal of Lightwave Technology
Volume	5
Issue number	11
DOIs	https://doi.org/10.1109/JLT.1987.1075453
Publication status	Published - 1987 Nov
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1109/JLT.1987.1075453

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title = "1.5-μm λ/4-Shifted InGaAsP/InP DFB Lasers",

abstract = "A single wavelength light source in 1.5-μm range was developed using InGaAsP/InP λ/4-shifted distributed feedback (DFB) semiconductor heterostructures, Superiority of the λ/4-shifted DFB structure in terms of stability of the main mode at the Bragg wavelength was shown theoretically, in which the threshold, the output, and the polarization characteristics were taken into account, A λ/4-shifted corrugated grating was made by a newly developed negative and positive photoresists technique. Buried heterostructure (BH) diode Lasers with nonreflective window ends were fabricated and highly stable single-mode operation with a low threshold was obtained reproducibly. Direct modulation properties and life-tests results indicated that the λ/4-shifted DFB lasers could be a reliable single-mode light source in a long span lightwave transmission system in 1.5-μm range.",

author = "Shigeyuki Akiba and Masashi Usami and Katsuyuki Utaka",

year = "1987",

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T1 - 1.5-μm λ/4-Shifted InGaAsP/InP DFB Lasers

AU - Akiba, Shigeyuki

AU - Usami, Masashi

AU - Utaka, Katsuyuki

PY - 1987/11

Y1 - 1987/11

N2 - A single wavelength light source in 1.5-μm range was developed using InGaAsP/InP λ/4-shifted distributed feedback (DFB) semiconductor heterostructures, Superiority of the λ/4-shifted DFB structure in terms of stability of the main mode at the Bragg wavelength was shown theoretically, in which the threshold, the output, and the polarization characteristics were taken into account, A λ/4-shifted corrugated grating was made by a newly developed negative and positive photoresists technique. Buried heterostructure (BH) diode Lasers with nonreflective window ends were fabricated and highly stable single-mode operation with a low threshold was obtained reproducibly. Direct modulation properties and life-tests results indicated that the λ/4-shifted DFB lasers could be a reliable single-mode light source in a long span lightwave transmission system in 1.5-μm range.

AB - A single wavelength light source in 1.5-μm range was developed using InGaAsP/InP λ/4-shifted distributed feedback (DFB) semiconductor heterostructures, Superiority of the λ/4-shifted DFB structure in terms of stability of the main mode at the Bragg wavelength was shown theoretically, in which the threshold, the output, and the polarization characteristics were taken into account, A λ/4-shifted corrugated grating was made by a newly developed negative and positive photoresists technique. Buried heterostructure (BH) diode Lasers with nonreflective window ends were fabricated and highly stable single-mode operation with a low threshold was obtained reproducibly. Direct modulation properties and life-tests results indicated that the λ/4-shifted DFB lasers could be a reliable single-mode light source in a long span lightwave transmission system in 1.5-μm range.

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1.5-μm λ/4-Shifted InGaAsP/InP DFB Lasers

Abstract

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