Photonics Research • Vol 9 • No 8
Dynamic performance and reflection sensitivity of quantum dot distributed feedback lasers with large optical mismatch
June 2021 • Bozhang Dong, Jianan Duan, Heming Huang, Justin Norman, Kenichi Nishi, Keizo Takemasa, Mitsuru Sugawara, John E. Bowers, Frédéric Grillot
This work reports on a high-efficiency InAs/GaAs distributed feedback quantum dot laser. The large optical wavelength detuning at room temperature between the lasing peak and the gain peak causes the static, dynamic, and nonlinear intrinsic properties to all improve with temperature, including the lasing efficiency, the modulation dynamics, the linewidth enhancement factor, and consequently the reflection insensitivity. Results reported show an optimum operating temperature at 75°C, highlighting the potential of t…