概括
这项研究引入了用于激光吸收光谱的芯片上波长束组合器. 该设备有效地多重多个激光波长,使得精确的多气体检测.
科学领域:
- 光子学 是一个光子学.
- 光学工程是指光学工程.
- 频谱学是一种光谱学.
背景情况:
- 激光吸收光谱需要可调节的激光器跨越多个波长频段的痕迹气体检测.
- 现有的组合多个波长的方法可能是复杂和重的.
研究的目的:
- 为多频段激光源开发一个集成的,芯片上的波长光束组合器.
- 为了证明该设备在光谱应用中复杂化不同波长的能力.
主要方法:
- 使用化马赫-泽恩德干扰仪 (MZIs) 和修改的多模干扰仪 (MMI) 结构.
- 使用MZI实现两个波长的数字复杂化,使用~100nm间距.
- 采用一个紧的修改MMI多重化更广泛的波段与几百纳米间隔.
主要成果:
- 在单一芯片上实现了光的多重复合,具有不同的波长间距.
- 从1650nm到2050nm的所有四个通道中测量了约2.5dB的低插入损失.
- 成功展示了可调节二极管激光吸收光谱 (TDLAS) 用于使用开发的组合器检测多气体.
结论:
- 芯片上的波长束组合器为光谱学中的多频段激光源提供了有效的解决方案.
- 该设备可实现紧和多功能多气体传感系统.
- 这种综合方法推动了微量气体分析的激光吸收光谱学领域的发展.
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