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Fibre Reinforced Polymer (FRP) components are being increasingly used in a wider range of structural applications in space, aerospace, automobile, civil and chemical engineering fields.Therefore continuous monitoring of the structural health & integrity of those critical components are extremely important task to avoid catastrophic failures and for the safety of human lives.Most importantly the idea of internal condition monitoring of the structure reveals itself as a much more useful technique for the early detection of defects/damage in the structure.This internal monitoring demands embeddable transducers that able to withstand a harsh operating environment during the entire lifetime of the structure.There are many non-destructive test (NDT) procedures available for damage detection of composite structures which are not possible to use in situ monitoring of structural health and integrity.Recent advances in fibre optic sensor technologies have provided great opportunities to develop more sophisticated in situ Structural Health Monitoring (SHM) systems.This paper discusses the present and future usages of fibre optic sensors and the associated challenges of using embedded sensors in in-situ SHM systems of FRP components/structures.