Multiplexed reflectometric fiber optic frequency-modulated continuous-wave interferometric displacement sensor

Jesse Zheng

doi:10.1117/1.2012424

1 August 2005 Multiplexed reflectometric fiber optic frequency-modulated continuous-wave interferometric displacement sensor

Jesse Zheng

Author Affiliations +

Optical Engineering, Vol. 44, Issue 8, 084401 (August 2005). https://doi.org/10.1117/1.2012424

Abstract

A practical double-sensor multiplexed fiber optic displacement sensor is reported. The sensor is based on the principles of optical frequency-modulated continuous-wave (FMCW) interference and frequency-division multiplexing. The beat signals from the individual sensors are assigned in the frequency domain and separated with different electrical bandpass filters. The displacements of the targets can be determined simultaneously by detecting the phase shifts of the corresponding beat signals. The cross talks between the individual sensors are analyzed algebraically and with a phasor diagram. An accuracy of 0.05 µm in a dynamic range of 1000 µm is achieved.

©(2005) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Jesse Zheng "Multiplexed reflectometric fiber optic frequency-modulated continuous-wave interferometric displacement sensor," Optical Engineering 44(8), 084401 (1 August 2005). https://doi.org/10.1117/1.2012424

Published: 1 August 2005

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE