We report the InAs/GaAs quantum dot laterally coupled distributed feedback(LC-DFB)lasers operating at room temperature in the wavelength range of 1.31μm.First-order chromium Bragg gratings were fabricated alongside t...We report the InAs/GaAs quantum dot laterally coupled distributed feedback(LC-DFB)lasers operating at room temperature in the wavelength range of 1.31μm.First-order chromium Bragg gratings were fabricated alongside the ridge waveguide to obtain the maximum coupling coefficient with the optical field.Stable continuous-wave single-frequency operation has been achieved with output power above 5 mW/facet and side mode suppression ratio exceeding 52 dB.Moreover,a single chip integrating three LC-DFB lasers was tentatively explored.The three LC-DFB lasers on the chip can operate in single mode at room temperature,covering the wavelength span of 35.6 nm.展开更多
基金supported by the National Key Research and Development Program of China(No.2021YFB2800500).
文摘We report the InAs/GaAs quantum dot laterally coupled distributed feedback(LC-DFB)lasers operating at room temperature in the wavelength range of 1.31μm.First-order chromium Bragg gratings were fabricated alongside the ridge waveguide to obtain the maximum coupling coefficient with the optical field.Stable continuous-wave single-frequency operation has been achieved with output power above 5 mW/facet and side mode suppression ratio exceeding 52 dB.Moreover,a single chip integrating three LC-DFB lasers was tentatively explored.The three LC-DFB lasers on the chip can operate in single mode at room temperature,covering the wavelength span of 35.6 nm.