Wavelength-encoded fiber optic angular displacement sensor

William B. Spillman Jr.; Robert E. Rudd III; Frederick G. Hoff; Douglas R. Patriquin; Jeffrey R. Lord

doi:10.1117/12.24744

1 February 1991 Wavelength-encoded fiber optic angular displacement sensor

William B. Spillman Jr., Robert E. Rudd III, Frederick G. Hoff, Douglas R. Patriquin, Jeffrey R. Lord

Proceedings Volume 1367, Fiber Optic and Laser Sensors VIII; (1991) https://doi.org/10.1117/12.24744
Event: SPIE Microelectronic Interconnect and Integrated Processing Symposium, 1990, San Jose, United States

Abstract

Knowledge of angular displacement is important for many system applications. There have been numerous optical techniques applied to this sensing need with the most pervasive at present being the optical code plate sensor. Other optical measurement techniques have not been as widely used due to their limited angular measurement range. An alternative to code plate sensing is described here that uses period modulated diffraction gratings attached to the interior of a rotatable element. Rotation of the element or anything to which it is attached has the result that the bandpass wavelength of the sensor is modulated due to the change in the grating segment being illuminated. The sensor is interrogated via optical fibers together with an LED source and high speed spectrometer and can measure angular displacements approaching 2ir. Sensor performance is quantified and compared with existing sensor technology.

Citation Download Citation

William B. Spillman Jr., Robert E. Rudd III, Frederick G. Hoff, Douglas R. Patriquin, and Jeffrey R. Lord "Wavelength-encoded fiber optic angular displacement sensor", Proc. SPIE 1367, Fiber Optic and Laser Sensors VIII, (1 February 1991); https://doi.org/10.1117/12.24744

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