Proximity sensors based on ball-lensed optical fibers
Abstract
Reflective sensors involving optical fibers are very popular due to low cost and EMI insensitive. In this paper, a new concept is described regarding proximity sensors based on ball-lensed optical fibers (PSBBOF). Two types of sensors are presented: (1) Type A with one transmitting and four receiving optical fibers and (2) Type B with one transmitting and eight receiving optical fibers. In both PSBBOF types ball-lensed optical fibers are used as a receiving line. Sensitive of both PSBBOF is compared to sensitive of sensors with the same configurations, but involving cleaved optical fibers. All developed sensors were tested at two wavelengths: 850 nm and 1300 nm. As a refractive surface the silicon wafer was used.
- Publication:
-
13th International Scientific Conference on Optical Sensors and Electronic Sensors
- Pub Date:
- August 2014
- DOI:
- 10.1117/12.2071567
- Bibcode:
- 2014SPIE.9291E..0HG