Uncooled Tunable Laser Based on High-Density Integration of Distributed Feedback Semiconductor Lasers

作者：Yaqiang Fan, Jizhou Liu, Rulei Xiao, Yangyang Gong, Zhenxing Sun, Pan Dai, Kaifei Tang, Yuechun Shi, Xiangfei Chen · 发表于：IEEE Journal of Quantum Electronics · 年份：2023 · DOI：10.1109/jqe.2023.3286028 · 被引用次数：18 · 研究领域：Photonic and Optical Devices、Semiconductor Lasers and Optical Devices、Advanced Fiber Optic Sensors

Most types of tunable lasers are sensitive to the ambient temperature and require thermoelectric coolers (TECs) for temperature control. For conventional tunable laser modules, high power consumption of cooling is required for stabilizing the laser temperature and complex hermetic packages are normally used to avoid moisture condensation problems, which are expensive and difficult to manufacture. To overcome these drawbacks, we demonstrated an uncooled tunable laser via the monolithically integrated multi-wavelength distributed feedback (DFB) laser array based on the reconstruction-equivalent-chirp technique. Totally sixteen DFB semiconductor lasers are densely integrated with a 4-by-4 matrix laser array. To ensure the uncooled laser operates properly, the active material of the laser chip is designed to work at high temperatures without TEC cooling. Therefore, an uncooled wavelength-tuning range of 33.8 nm is achieved during the whole commercial operating temperature range from 0 °C to 70 °C.