Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Singlemode-multimode-singlemode fiber structures (SMS) based on distinct sections of a pure silica multimode fiber (coreless-MMF) with diameters of 125 and 55 mu m, were reported for the measurement of curvature and temperature. The sensing concept relies on the multimode interference that occurs in the coreless-MMF section and, in accordance with the length of the MMF section used, two fiber devices were developed: one based on a bandpass filter (self-image effect) and the other on a band-rejection filter. Maximum sensitivities of 64.7 nm.m and 13.08 pm/degrees C could be attained, for curvature and temperature, respectively, using the band-rejection filter with 55 mu m-MMF diameter. A proof of concept was also explored for the simultaneous measurement of curvature and temperature by means of the matrix method.302335693575Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)FINEPproject MICROPHYTE [PTDC/EBB-EBI/102728/2008]EUPortuguese StatePh.D. fellowship [SFRH/BD/47799/2008]Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)CAPES [293/11]CAPES [23038.029912/2008-05]project MICROPHYTE [PTDC/EBB-EBI/102728/2008]Ph.D. fellowship [SFRH/BD/47799/2008]