Ocean Environmental Influences of Temperature and Mechanical Stress on Bare Fiber-Optic Sensors of Acoustic Pressures. Part II.
Abstract
The effect of extraneous (environmental) mechanical stress on the state of polarization of light signals in fiber-optic sensors of acoustic pressure is investigated. After review of the relevant theory of the propagation of polarized light in a dielectric waveguide and of photoelastic coupling, more specific cases of the birefringent effects of mechanical stress are theoretically analyzed and numerically calculated. It is concluded that these effects are negligible in the cases treated except for fibers subject to equal and opposite forces along a diameter or subject to random pressure fluctuations. Estimates of differential changes in the index of refraction in silica fibers due to (elastic) stress-induced birefringence are furnished. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 21, 1981
- Accession Number
- ADA094611
Entities
People
- Sam Hanish
Organizations
- United States Naval Research Laboratory