We present a widely tunable laser design based on three intra-cavity Mach-Zehnder interferometers. The laser has been fabricated in a multi-project wafer run and does not require high precision lithography, as needed for SGDBR lasers. We demonstrate 20 nm of tuning range with output powers of approximately 1 mW in fiber. With an excess of 30 dB in side-mode suppression ratio, the laser can find applications in gas spectroscopy, which is also supported by an absorption measurement in an HCN-filled gas cell. Tuning has been demonstrated solely relying on electro-optical phase modulators, providing a potentially faster tuning scheme than temperature or current based tuning mechanisms.

中文翻译：

---

InP 光子集成电路上的宽可调谐激光器

我们提出了一种基于三个腔内 Mach-Zehnder 干涉仪的可广泛调谐的激光器设计。该激光器是在多项目晶圆运行中制造的，不需要像 SGDBR 激光器那样需要高精度光刻。我们展示了 20 nm 的调谐范围，光纤中的输出功率约为 1 mW。凭借超过 30 dB 的边模抑制比，激光器可以在气体光谱学中找到应用，这也得到了在填充 HCN 的气体池中的吸收测量的支持。已经证明调谐仅依赖于电光相位调制器，提供比基于温度或电流的调谐机制可能更快的调谐方案。