WANG Li-xin, LIU Zhu, XU Dan. Study on fiber optic gas sensor based on tunable Fabry-Perot cavity[J]. 2007, (6): 63-64. DOI: 10.13873/j.1000-97872007.06.012.
A scheme is designed to measure the gas volume fraction based on tunable Fabry-Perot(F-P) cavity.Standard grating as reference is imported to solve the problem that the characteristic of choosing frequency of F-P cavity is influenced by temperature;harmonic detection is used to improve the measuring sensitivity;volume fraction of different gases can be detected;lastly
an experiment with C2H2 is designed to validate the scheme