Lee Jin-Hyoung, Bovington Jock, Shubin Ivan, Luo Ying, Yao Jin, Lin Shiyun, Cunningham John E, Raj Kannan, Krishnamoorthy Ashok V, Zheng Xuezhe
Opt Express. 2015 May 4;23(9):12079-88. doi: 10.1364/OE.23.012079.
A Si/III-V hybrid laser has been a highly sought after device for energy-efficient and cost-effective high-speed silicon photonics communication. We present a high wall-plug efficiency external-cavity hybrid laser created by integrating an independently optimized SOI ring reflector and a III-V gain chip. In our demonstration, the uncooled integrated laser achieved a waveguide-coupled wall-plug efficiency of 12.2% at room temperature with an optical output power of ~10 mW. The laser operated single-mode near 1550 nm with a linewidth of 0.22 pm. This is a tunable light source with 8 nm wavelength tuning range. A proof-of-concept laser wavelength stabilization technique has also been demonstrated. Using a simple feedback loop, we achieved mode-hop-free operation in a packaged external-cavity hybrid laser as bias current was varied by 60mA.
硅/III-V族混合激光器一直是高效节能且经济高效的高速硅光子学通信中备受追捧的器件。我们展示了一种通过集成独立优化的硅基绝缘体（SOI）环形反射器和III-V族增益芯片而制造的高壁插效率外腔混合激光器。在我们的演示中，未冷却的集成激光器在室温下实现了12.2%的波导耦合壁插效率，光输出功率约为10毫瓦。该激光器在1550纳米附近单模工作，线宽为0.22皮米。这是一种具有8纳米波长调谐范围的可调谐光源。还展示了一种概念验证的激光波长稳定技术。通过一个简单的反馈回路，当偏置电流变化60毫安时，我们在封装的外腔混合激光器中实现了无模式跳变运行。
