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Proceedings Paper

Fiber interferometer combining sub-nm displacement resolution with miniaturized sensor head
Author(s): Lun-Kai Cheng; Ronald A. J. Hagen; Lodi N. Schriek; Peter M. Toet; Oana E. Van der Togt
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Paper Abstract

The presented interferometer concept enables high-accuracy target displacement measurement in difficult accessible locations and the development of small fiber optic sensor to measure other physical parameters e.g. pressure, vibration, gravity force, etc.. Furthermore, this configuration is basically insensitive to disturbances to the lead fiber between the passive sensor head and the measurement system including the electro-optical parts and the detection interferometer. Two test setups are built and tested to demonstrate the feasibility of high-speed measurement up to 50 kHz, low system drift of ~0.5 nm over 500 s and a low displacement noise level down to 2.8 pm/√ Hz.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032380 (23 April 2017); doi: 10.1117/12.2265441
Show Author Affiliations
Lun-Kai Cheng, TNO (Netherlands)
Ronald A. J. Hagen, TNO (Netherlands)
Lodi N. Schriek, TNO (Netherlands)
Peter M. Toet, TNO (Netherlands)
Oana E. Van der Togt, TNO (Netherlands)

Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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