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| 1 | 中红外集成光子传感系统研究进展(特邀)显示文摘近年来,中红外(波长范围2~20μm)集成光子学因其潜在的应用场景如吸收光谱、热成像、自由空间光通信等而受到了广泛的关注。中红外波段包含了多个大气透明窗口,有着作为气体传感应用的先天优势,并且得益于近红外成熟的器件设计测试流程与微纳加工技术,一些近红外的应用也能够较快地拓展至中红外波段。此外,集成光子器件在一些传感应用中不仅可以做到媲美传统设备的灵敏度,同时还具有低功耗、低成本、结构紧凑,易于与其他设备集成的特点。因此,中红外集成光子传感器件在未来将会在工业检测、科学研究、医疗诊断、军事安防、民用生活等领域中不断发挥出重要的作用。文中对中红外传感系统的三个主要部分:传感单元、光谱仪和探测器做出了简要介绍,展示了目前中红外集成光子传感器件的研究进展,并对其未来发展做出了展望。 | 夏利鹏 刘昱恒 周培基 邹毅 | 2022 | 红外与激光工程2022，51，3： | 1 |
| 2 | Slow-light-enhanced on-chip 1D and 2D photonic crystal waveguide gas sensing in near-IR with an ultrahigh interaction factor显示文摘Nanophotonic waveguides hold great promise to achieve chip-scale gas sensors. However, their performance is limited by a short light path and small light–analyte overlap. To address this challenge, silicon-based, slow-lightenhanced gas-sensing techniques offer a promising approach. In this study, we experimentally investigated the slow light characteristics and gas-sensing performance of 1D and 2D photonic crystal waveguides(PCWs) in the near-IR(NIR) region. The proposed 2D PCW exhibited a high group index of up to 114, albeit with a high propagation loss. The limit of detection(LoD) for acetylene(C_(2)H_(2)) was 277 parts per million(ppm) for a1 mm waveguide length and an averaging time of 0.4 s. The 1D PCW shows greater application potential compared to the 2D PCW waveguide, with an interaction factor reaching up to 288%, a comparably low propagation loss of 10 dB/cm, and an LoD of 706 ppm at 0.4 s. The measured group indices of the 2D and 1D waveguides are104 and 16, respectively, which agree well with the simulation results. | ZIHANG PENG YIJUN HUANG KAIYUAN ZHENG CHUANTAO ZHENG MINGQUAN PI HUAN ZHAO JIALIN JI YUTING MIN LEI LIANG FANG SONG YU ZHANG YIDING WANG FRANK K.TITTEL | 2023 | Photonics Research2023，11，10： | 0 |
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