Gas sensing demonstration by using silica high-mesa waveguide with amplified cavity ring down spectroscopy technique

IEICE Electronics Express

Kiichi Hamamoto¹  Haisong Jiang¹  Syota Enami¹  Wenying Li¹  Hirohito Hokazono¹ 

[1] Interdisciplinary Graduate School of Engineering Sciences (I-EggS), Kyushu University

关键词: silica high-mesa waveguide;    infrared absorption;    gas sensing device;    amplified CRDS;   

DOI  :  10.1587/elex.12.20150574

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(21)For realizing compact breath sensing device, we have proposed a silica high-mesa waveguide for the gas-cell (breath detection part) because of its low propagation loss. It is, however, still difficult to make breath-sensing due to its total insertion loss because the required length of the waveguide reaches very long of approximately several 10 cm�?1 m for the small portion of gas, and thus gas-sensing has not been achieved so far. To compensate the insertion loss, we utilize “amplified�? CRDS (cavity ring down spectroscopy) technique to realize gas-sensing in this paper. As a result, we could successfully confirm the gas-sensing of CO2 with using the waveguide gas-cell for the first time.

【 授权许可】

Unknown