Abstract
A microbending optical fiber sensor is developed for the detection of low level heart sound. The power of light coming from an He-Ne laser operating at 632.8 nm is 5 mW. A graded-index multimode fiber with a 62.5/125 (core/cladding) diameter is used as a microbending sensor. Various microbending deformers with different periodic perturbation pitches are studied. A high sensitivity photodetector following the fiber sensor can detect small optical power variation to achieve low-level heart sound detection. Comparison of results obtained shows that the microbending optical fiber sensor can provide more information about low-level heart sound than with a piezoelectric accelerometer.
| Original language | English |
|---|---|
| Pages | 312 |
| Number of pages | 1 |
| State | Published - 1997 |
| Externally published | Yes |
| Event | Proceedings of the 1997 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim - Chiba, Jpn Duration: 14 07 1997 → 18 07 1997 |
Conference
| Conference | Proceedings of the 1997 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim |
|---|---|
| City | Chiba, Jpn |
| Period | 14/07/97 → 18/07/97 |