IEEE Journal of Quantum Electronics · 1987 · 38 citations · 10 references
EngineeringElectrical EngineeringOptical MaterialsOptoelectronicsPhotonicsIntegrated OpticsIntegrated PhotonicsLaser DiodesLaser OpticsOptical Communication SystemsPhotonic Integrated CircuitsExternal Cavity Laser DiodesIntegrated LasersIntegrated Semiconductor LasersIntegrated WaveguidesStripe Patterns
Five-wavelength integrated DFB laser arrays with quarter-wave-shifted structures, using nonuniform stripe width, have been developed for high-density WDM systems around the 1.3 μm wavelength region for the first time. Each DFB laser of the five-wavelength integrated DFB laser array oscillated at the Bragg wavelength with a side mode suppression ratio of more than 30 dB. Good reproducibility of 50 ± 5 A lasing wavelength separations has been obtained.
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1.5 μm phase-shifted DFB lasers for single-mode operation
K. Sekartedjo, N. Eda, K. Furuya et al. · Electronics Letters · 1984 · 129 citations