1. Distributed Sensor Technology
A distributed white light fiber optic sensor system has been developed with capability for monitoring of large structural systems. The optical fiber sensor system is based on double white light interferometry. Individual segments of single mode optical fibers forming a common path interferometer are linked in series and a scanning white light interferometer provides for distributed sensing of strain/deformation signals from various locations in the structure.
Attributes of the system- Self-referencing
- Various gauge lengths
- Multi-point/Multiplexed monitoring
Two types of systems,
bulk optics and whole-fiber sensing systems have been developed.
Fig.1 The portable fiber optic sensor system (DFOS-DF) |
 Fig.2 Portion of the receiving interferometer for bulk optics system |