Optical Fiber Sensors for the Next Generation of Rehabilitation Robotics LEAL-JUNIOR, ARNALDO (PROFESSOR, DEPARTMENT OF MECHANICAL ENGINEERING, FEDERAL UNIVERSITY OF ESPIRITO SANTOR (UFES), VITORIA, ESPIRITO SANTO, BRAZIL),FRIZERA-NETO, ANSELMO (PROFESSOR, DEPARTMENT OF ELECTRICAL ENGINEERING, FEDERAL UNIVERSITY OF ESPIRITO SANTOR (UFES), VITORIA, ESPIRITO SANTO, BRAZIL)