Integrated fiber optic displacement sensor based on multimode interference

Alok A. Mehta; Waleed Mohammed; Eric G. Johnson

doi:10.1117/12.511124

10 November 2003 Integrated fiber optic displacement sensor based on multimode interference

Alok A. Mehta, Waleed Mohammed, Eric G. Johnson

Proceedings Volume 5177, Gradient Index, Miniature, and Diffractive Optical Systems III; (2003) https://doi.org/10.1117/12.511124
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

An integrated fiber-optic displacement sensor based on multimode interference is characterized through analysis of experimental performance in comparison to the expected behavior that is theoretically predicted. Multimode interference and re-imaging theory applied to the specific fiber properties and geometry of the device can be used to design and predict the performance of the device. Essentially, the sensor consists of a multimode fiber of a specific length fusion spliced to a single mode fiber used in conjuction with an 80/20 splitter, source, and detector that are used to inject and detect reflected signals from targets. The sensor is fabricated into a robust, compact, and single arm device capable of operating as a calibrated displacement sensor over a large displacement range. This is achieved through analysis of power reflected off of a surface and back through the device over a finite wavelength range.

Citation Download Citation

Alok A. Mehta, Waleed Mohammed, and Eric G. Johnson "Integrated fiber optic displacement sensor based on multimode interference", Proc. SPIE 5177, Gradient Index, Miniature, and Diffractive Optical Systems III, (10 November 2003); https://doi.org/10.1117/12.511124

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

Includes PDF, HTML & Video, when available