TY - GEN
T1 - Missing modes in 1.3 μm InGaAsP/InP uncooled Fabry-Perot lasers and their effect on transmission performance
AU - Ko, Jeungyun
AU - Kim, Sungkee
AU - Yoon, Hyunjae
AU - Jeong, Jichai
PY - 1999
Y1 - 1999
N2 - The most economical modulation format solution is probably direct modulation deploying uncooled Fabry- Perot (FP) lasers for low-cost fiber optic links. However, transmission performance using uncooled EP lasers can be significantly affected by longitudinal mode characteristics such as mode modulation (=mode missing) [ 11 and TE-TM mode switching (=modal instability). There for it is necessary to understand mode missing and transmission performance including lasing spectrum of the uncooled FP laser with missing modes. From the measurements of longitudinal mode spectra of 1.3μm InGaAsP/InP Fabry-Perot lasers, we can find that five lasers out of 25 lasers satisfy the missing mode condition. The measured spectra moved to longer wavelength because of the gain curve shifts toward longer wavelength with increasing temperature. Fig.l(a) shows the measured longitudinal mode spectra without missing modes. However, other lasers have both mode missing and modal instability in Fig. 1 (b) and Fig. 1 (c). We believe that modal instability is due to modal gain change by the temperature-induced stress.
AB - The most economical modulation format solution is probably direct modulation deploying uncooled Fabry- Perot (FP) lasers for low-cost fiber optic links. However, transmission performance using uncooled EP lasers can be significantly affected by longitudinal mode characteristics such as mode modulation (=mode missing) [ 11 and TE-TM mode switching (=modal instability). There for it is necessary to understand mode missing and transmission performance including lasing spectrum of the uncooled FP laser with missing modes. From the measurements of longitudinal mode spectra of 1.3μm InGaAsP/InP Fabry-Perot lasers, we can find that five lasers out of 25 lasers satisfy the missing mode condition. The measured spectra moved to longer wavelength because of the gain curve shifts toward longer wavelength with increasing temperature. Fig.l(a) shows the measured longitudinal mode spectra without missing modes. However, other lasers have both mode missing and modal instability in Fig. 1 (b) and Fig. 1 (c). We believe that modal instability is due to modal gain change by the temperature-induced stress.
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U2 - 10.1109/CLEOPR.1999.817890
DO - 10.1109/CLEOPR.1999.817890
M3 - Conference contribution
AN - SCOPUS:0033342673
T3 - CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics
SP - 898
EP - 899
BT - CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 1999 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim 1999
Y2 - 30 August 1999 through 3 September 1999
ER -