Abstract
A new method for sensing water penetration into optical cable using a wavelength tunable OTDR is proposed. The reflectivity at every Fabry-Perot connector gap contained in a monitoring fiber has periodic wavelength dependence. It is confirmed experimentally that water penetration into a connector gap results in a wavelength period change, the ratio of which coincides with the refractive index of water regardless of the size of the gap.
Original language | English |
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Pages (from-to) | 844-846 |
Number of pages | 3 |
Journal | IEEE Photonics Technology Letters |
Volume | 2 |
Issue number | 11 |
DOIs | |
Publication status | Published - 1990 Nov |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering