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(Color online) Schematic of the QD-DFB laser structure.
(Color online) Measured (squares) via Wheatstone bridge and calculated (triangles) of the GaAs substrate.
(Color online) Wavelength shift with current at various duty cycles. Inset: Thermal chirp at DC input current of 55 mA.
(Color online) Simulation of temperature field of QD-DFB laser with ANSYS.
(Color online) Relative temperature change in active region with injected current measured (points) and calculated (line) with an active region thermal conductivity of 0.044 W/(m-K).
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