Strain sensing in fiber optic coils with buried Bragg gratings

Anup Sharma; L. Phillips; Sherrie J. Burgett; Paul B. Ruffin; W. Long

doi:10.1117/12.406361

15 December 2000 Strain sensing in fiber optic coils with buried Bragg gratings

Anup Sharma, L. Phillips, Sherrie J. Burgett, Paul B. Ruffin, W. Long

Proceedings Volume 4087, Applications of Photonic Technology 4; (2000) https://doi.org/10.1117/12.406361
Event: 2000 International Conference on Application of Photonic Technology (ICAPT 2000), 2000, Quebec City, Canada

Abstract

Results of an application of fiber-optic Bragg gratings for sensing longitudinal strain in a fiberoptic coil with 18 layers is described. Some of the fiber winding parameters in this test coil resembled those typically used in a fiber-optic data link payout dispensers. 9t and 10th layers of this coil have Bragg gratings in their center with unstrained Bragg wavelengths of 1294.74 and 1285.47 nm respectively. Bragg grating-based technique is used to measure longitudinal stretch or compression in specific layers of optical fiber in the coil, and relate it to the various winding parameters like the number of turns above and below the turn of interest as well as the winding tension in each turn. The observed results are compared to a cable-pack mechanics model (CPMM) that is widely used in the design of such coils.

Citation Download Citation

Anup Sharma, L. Phillips, Sherrie J. Burgett, Paul B. Ruffin, and W. Long "Strain sensing in fiber optic coils with buried Bragg gratings", Proc. SPIE 4087, Applications of Photonic Technology 4, (15 December 2000); https://doi.org/10.1117/12.406361

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