[3] MILLER G A, ASKINS C G, FRIEBELE E J. Shape sensing using distributed fiber optic strain measurements[C]Proceedings of SPIE 5502, Second European Wkshop on Optical Fiber Senss. Santer: SPIE, 2004: 528 531.
[4] DUNCAN R G, RAUM M T. acterization of a fiberoptic shape position sens[C]Proceedings of SPIE 6167, Smart Structures Materials. San Diego: SPIE, 2006: 616704.