Temperature-insensitive optical Fabry–Perot flow measurement system with partial bend angle

Huijia Yang; Junfeng Jiang; Shuang Wang; Yuheng Pan; Xuezhi Zhang; Tiegen Liu

doi:10.3788/COL201715.040601

Journals >Chinese Optics Letters >Volume 15 >Issue 4 >Page 040601 > Article

Chinese Optics Letters
Vol. 15, Issue 4, 040601 (2017)

Temperature-insensitive optical Fabry–Perot flow measurement system with partial bend angle

Huijia Yang¹, Junfeng Jiang^1、*, Shuang Wang¹, Yuheng Pan^1、2, Xuezhi Zhang¹, and Tiegen Liu¹

Author Affiliations

¹School of Precision Instrument and Opto-Electronics Engineering, Key Laboratory of Micro Opto-electro Mechanical System Technology, Institute of Optical Fiber Sensing of Tianjin University, Tianjin Optical Fiber Sensing Engineering Center, Key Laboratory of Opto-Electronics Information Technology (Tianjin University), Ministry of Education, Tianjin 300072, China

²School of Computer and Information Engineering, Tianjin Chengjian University, Tianjin 300384, China

show less

DOI: 10.3788/COL201715.040601 Cite this Article Set citation alerts

Huijia Yang, Junfeng Jiang, Shuang Wang, Yuheng Pan, Xuezhi Zhang, Tiegen Liu. Temperature-insensitive optical Fabry–Perot flow measurement system with partial bend angle[J]. Chinese Optics Letters, 2017, 15(4): 040601 Copy Citation Text

EndNote(RIS)

BibTex

Plain Text

show less

Abstract

A flow measurement system consisting of an optical fiber Fabry–Perot (F-P) sensor and an elbow tube is proposed and demonstrated to realize flow measurements and eliminate thermal disturbance. Two F-P sensors are symmetrically mounted on the inner-wall surface of the elbow of 90° in order to eliminate the effect of thermal disturbance to the flow measurement accuracy. Experimental results show that the absolute phase difference is the square root of the fluid flow. It is consistent with the theoretical analysis, which proves that the flow measurement method can measure flow and eliminate the influence of thermal disturbance simultaneously.