Zhongkai Zhang, Zunren Lü, Xiaoguang Yang, Hongyu Chai, Lei Meng, Tao Yang. 25 Gb/s directly modulated ground-state operation of 1.3 μm InAs/GaAs quantum dot lasers up to 75°C[J]. Chinese Optics Letters, 2020, 18(7): 071401
- Chinese Optics Letters
- Vol. 18, Issue 7, 071401 (2020)
Fig. 1. Schematic diagram of the InAs/GaAs QD lasers.
Fig. 2. PL spectra of the one-layer and the eight-layer QDs samples. The inset shows the surface AFM image of the surface QD layer for the eight-layer QD sample.
Fig. 3. P–I curves of the laser at different temperatures from 20°C to 70°C. The inset shows the logarithmic threshold current as a function of temperature.
Fig. 4. Small signal frequency response curves of the InAs/GaAs QD laser, measured at different temperatures.
Fig. 5. Eye diagrams of the InAs/GaAs QD laser at different temperatures.
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