Noise Reduction for Fiber Optic Sensors.
Abstract
This effort addressed several unresolved questions related to noise sources and readout techniques for fiber optic sensors. The tasks were divided into two fundamental areas: (1) an experimental investigation of polarization noise in single mode fibers, and (2) a tradeoff study of readout schemes for the fiber optic gyro. Each of these areas of investigation is discussed. The experimental results of this study confirmed the belief that for any phase sensitive fiber optic sensor a polarization maintaining fiber or a mechanism for creating one must be present. Since most of the mechanical or electro-mechanical techniques for inducing constant polarization in fibers are neither practical or effective for long fibers the answer ultimately lies in developing long lengths of single mode polarization maintaining fibers. Considerable effort should be expended to develop such fibers as they do not now exist in the quantity or lengths required for many applications. Until such fibers are available, engineering efforts for fiber gyros, etc., will show little payoff.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1981
- Accession Number
- ADA103481
Entities
People
- Matthew J. Berg
- V. Vali