U. Öhlander, O. Sahlen, O. Kjebon, S. Lourdudoss, J. Wallin, K. Streubel, S. Nilsson, L. Bäckbom
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Strain-compensated 1.55 μm DBR lasers for operation at high speed with low drive current
Strained-layer quantum well (QW) technology allows band-engineered active material to improve threshold current and output power [1], speed [2-4], chirp [2] and temperature performance [5]. A distributed Bragg reflector (DBR) section can be used to obtain longitudinal single-mode operation [6] and improve temperature performance [7]. High-reflectivity (HR) coatings can be employed for better temperature performance [7] and threshold current [1]. We report a combination of DBR rear section, short-cavity QW active section and HR-coated front facet, which improves the properties for direct modulation.
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