She studies complex systems in a wide range of interdisciplinary fields. She is an expert in nonlinear dynamics of semiconductor lasers and has discovered some remarkable similarities (but also differences) between the behavior of excitable lasers and neurons. She has used and developed nonlinear analysis tools to extract information from complex signals in fields as diverse as biomedicine and climate. Her research interest has been focused on identifying early warning signals of critical transitions and extreme events. She has used Hilbert analysis to identify geographical regions where atmospheric dynamics has experienced pronounced variations in the last 30 years, she has applied symbolic analysis to EEG signals to differentiate brain states, and she has used complex network tools to analyze retina fundus images for early diagnosis of diseases. Her current interests also include sub-seasonal atmospheric predictability and laser speckle pattern analysis for optical remote sensing.
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Complex systems in the spotlight: next steps after the 2021 Nobel Prize in PhysicsBianconi, G.; Arenas, A.; Biamonte, J.; Carr, L.; Kahng, B.; Kertesz, J.; Kurths, Jürgen; Lü, L.; Masoller, C.; Motter, A.; Perc, M.; Radicchi, F.Journal of physics. Complexity 
4,  010201 (2023)
29- 
Testing Critical Slowing Down as a Bifurcation Indicator in a Low-Dissipation Dynamical SystemMarconi, M.; Métayer, C.; Acquaviva, A.; Boyer, J.; Gomel, A.; Quiniou, T.; Masoller, C.; Giudici, M.; Tredicce, J.Physical review letters 
125, 134102/1-134102/5 (2020)
90- "On the effects of lag-times in networks constructed from similarities of monthly fluctuations of climate fields"
Tirabassi, G.; Masoller, C.
Europhysics letters 102, 59003-p1-59003-p6 (2013)
92- "Inferring interdependencies in climate networks constructed at inter-annual, intra-season and longer time scales"
Deza, J.Ignacio; Masoller, C.; Barreiro Parrillo, Marcelo
European physical journal. Special topics 222, 511-523 (2013)
95- 
Rogue waves in optically injected lasers: origin, predictability, and suppressionZamora-Munt, J.; Garbin, B.; Barland, S.; Giudici, M.; Rios Leite, J.; Masoller, C.; Tredicce, J.Physical review A 
87, 035802 (2013)
96- "Stochastic logic gate that exploits noise and polarization bistability in an optically injected VCSEL"
Perrone, S.; Vilaseca, R.; Masoller, C.
Optics express 20, 22692-22699 (2012)
99- "Numerical characterization of transient polarization square-wave switching in two orthogonally coupled VCSELs"
Torre, M.; Gavrielides, A.; Masoller, C.
Optics express 19, 20269-20278 (2011)
102- 
Deterministic optical rogue wavesBonatto, C.; Feyereisen, M.; Barland, S.; Giudici, M.; Masoller, C.; Rios Leite, J.; Tredicce, J.Physical review letters 
107, 5 (2011)
103- "Research activities of the group on nonlinear dynamics, nonlinear optics and lasers (DONLL) at the universitat politècnica de catalunya (Campus de Terrassa)"
Tiana-Alsina, J.; Zamora, J.; Nistor, I.; Roppo, V.; Maigyte, L.; Aragoneses, A.; Khumar, N.; Martinez, M.; Fernandez, J.; Serrat, C.; Font, J.L.; Herrero, R.; Cojocaru, C.; Trull, J.; Masoller, C.; Staliunas, K.; Torrent, M.C.; Garcia, J.; Vilaseca, R.
Óptica pura y aplicada 44, 219-225 (2011)
117- "Modeling a semiconductor laser with an intracavity atomic absorber"
Masoller, C.; Oria, M.; Vilaseca, R.
Physical review A 80, 013830-1-013830-12 (2009)
134- "Influence of the injection current sweep rate on the polarization switching of vertical-cavity surface-emitting lasers"
Masoller, C.; Torre, M.; Mandel, P.
Journal of applied physics 99, 026108-1-026108-3 (2006)
135- "Experimental study of polarization switching of vertical-cavity surface-emitting lasers as a dynamical bifurcation"
Paul, J.; Masoller, C.; Hong, Y.; Spencer, P.; Shore, K.
Optics letters 31, 748-750 (2006)
137- "Observation of cascade complete-chaos synchronization with zero time lag in laser diodes"
Lee, M.; Paul, J.; Masoller, C.; Shore, K.
Journal of the Optical Society of America B. Optical physics 23, 846-851 (2006)
140- "Chaotic maps coupled with random delays: connectivity, topology, and network propensity for synchronization"
Marti, A. C.; Ponce, M.; Masoller, C.
Physica A: statistical mechanics and its applications 371, 104-107 (2006)
141- "Antiphase dynamics in multimode semiconductor lasers with optical feedback"
Masoller, C.; Torre, M.; Mandel, P.
Physical review A 71, 013818-1-013818-5 (2005)
142- "Influence of optical feedback on the polarization switching of vertical-cavity surface-emitting lasers"
Masoller, C.; Torre, M.
IEEE journal of quantum electronics 41, 483-489 (2005)
144- "Steady-state stabilization due to random delays in maps with self-feedback loops and in globally delayed-coupled maps"
Marti, A. C.; Ponce, M.; Masoller, C.
Physical review E: statistical, nonlinear, and soft matter physics 72, 066217-1-066217-10 (2005)
147- "Influence of time-delayed feedback in the firing pattern of thermally sensitive neurons"
Sainz-Trapaga, M.; Masoller, C.; Braun, H.; Huber, M.
Physical review E, statistical physics, plasmas, fluids, and related interdisciplinary topics 70, 031904-1-031904-11 (2004)
148- "Distribution of residence times in bistable noisy systems with time-delayed feedback"
Curtin, D.; Hegarty, S.; Goulding, D.; Houlihan, J.; Busch, T.; Masoller, C.; Huyet, G.
Physical review E, statistical physics, plasmas, fluids, and related interdisciplinary topics 70, 031103-1-031103-4 (2004)
149- "Synchronization of globally coupled non-identical maps with inhomogeneous delayed interactions"
Marti, A. C.; Masoller, C.
Physica A: statistical mechanics and its applications 342, 344-350 (2004)
150- "Synchronization of unidirectionally coupled multi-transverse-mode vertical-cavity surface-emitting lasers"
Torre, M.; Masoller, C.; Shore, K.
Journal of the Optical Society of America B. Optical physics 21, 1772-1780 (2004)
166- 
Delayed coupling of logistic mapsMasoller, C.; Cavalcante, H.; Rios Leite, J.Physical review E: statistical, nonlinear, and soft matter physics 
64, 037202-1-037202-4 (2001)