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A Novel all‐fiber velocity interferometer based on optic‐feedback delay line
Author(s) -
Hong Guangwei,
Lin Peng,
Xiao Qian
Publication year - 2012
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.26982
Subject(s) - interferometry , optics , phase noise , physics , noise (video) , line (geometry) , sensitivity (control systems) , optical fiber , fiber optic sensor , modulation (music) , phase modulation , phase (matter) , group delay and phase delay , microwave , acoustics , computer science , engineering , electronic engineering , telecommunications , mathematics , bandwidth (computing) , geometry , quantum mechanics , artificial intelligence , image (mathematics)
A novel all‐fiber velocity interferometer based on optic‐feedback delay line (NAFVISAR) is proposed and demonstrated.The configuration of the all‐fiber velocity interferometer system for any reflector removes the distributed phase modulation noise of the delay line essentially. In addition, the optic‐feedback delay line can double the phase sensitivity of the system compared with Levin's structure. With shaker vibration measurement experiment, it is shown that the NAFVISAR can successfully suppress the delay‐line‐induced noise with more than 30 dB. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1814–1817, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26982