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http://hdl.handle.net/10397/100525
| Title: | Cavity-enhanced photothermal gas detection with a hollow fiber Fabry-Perot absorption cell | Authors: | Tan, Y Jin, W Yang, F Jiang, Y Ho, HL |
Issue Date: | 1-Sep-2019 | Source: | Journal of lightwave technology, 1 Sept. 2019, v. 37, no. 17, p. 4222-4228 | Abstract: | A photothermal (PT) gas sensor with a hollow-core photonic bandgap fiber (HC-PBF) Fabry-Perot absorption cell is demonstrated. The formation of a high finesse cavity enhances the pump intensity and hence PT phase modulation as well as the sensitivity of PT phase detection by a factor that is proportional to the cavity finesse. Experiments with a 6.2-cm long HC-PBF absorption cell with a finesse of 45 for the pump and 41 for the probe demonstrated detection of 100 part-per-million acetylene in nitrogen with a signal-to-noise ratio of 795 for a detection bandwidth of 0.031 Hz. The double-cavity-enhanced PT gas sensor allows the use of a shorter HC-PBF to develop highly sensitive and fast all-fiber gas sensors. | Keywords: | Cavity enhancement Gas sensor Optical fiber sensor Photonic crystal fiber Photothermal interferometry |
Publisher: | Institute of Electrical and Electronics Engineers | Journal: | Journal of lightwave technology | ISSN: | 0733-8724 | EISSN: | 1558-2213 | DOI: | 10.1109/JLT.2019.2922001 | Rights: | ©2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The following publication Y. Tan, W. Jin, F. Yang, Y. Jiang and H. L. Ho, "Cavity-Enhanced Photothermal Gas Detection With a Hollow Fiber Fabry-Perot Absorption Cell," in Journal of Lightwave Technology, vol. 37, no. 17, pp. 4222-4228, 1 Sept., 2019 is available at https://doi.org/10.1109/JLT.2019.2922001. |
| Appears in Collections: | Journal/Magazine Article |
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| Jin_Cavity-Enhanced_Photothermal_Gas.pdf | Pre-Published version | 1.59 MB | Adobe PDF | View/Open |
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