TY - JOUR
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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U2 - 10.1109/JLT.1987.1075453
DO - 10.1109/JLT.1987.1075453
M3 - Article
AN - SCOPUS:0023669913
SN - 0733-8724
VL - 5
SP - 1564
EP - 1573
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
IS - 11
ER -