Thermal dependence of the emission linewidth of 1.52-μm single mode InAs/InP quantum dot lasers

Abstract : This paper experimentally investigates the thermal dependence of the emission linewidth of 1.52-μm single mode InAs/InP quantum dot lasers. Using a distributed feedback cavity made with symmetric antireflection coatings, a minimum linewidth of 300 kHz is unveiled. This narrow line is found rather constant with the injection current and the temperature range (293 K-313 K). However, under certain operating conditions, a linewidth rebroadening is also observed, which may be attributed to the spectral hole burning and to the variations of the alpha-factor with the temperature and bias current. Nevertheless, these results confirm the potential of this technology for manufacturing low-phase noise oscillators for coherent optical communications.
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Submitted on : Wednesday, October 30, 2019 - 8:56:07 PM
Last modification on : Sunday, November 10, 2019 - 1:26:27 AM

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J. Duan, B. Dong, H. Huang, Z. Lu, P. Poole, et al.. Thermal dependence of the emission linewidth of 1.52-μm single mode InAs/InP quantum dot lasers. 2019 Compound Semiconductor Week (CSW), May 2019, Nara, Japan. pp.1-2, ⟨10.1109/ICIPRM.2019.8819315⟩. ⟨hal-02307323⟩

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