Recent discoveries have enabled the integration of metals, insulators and semiconductors
structures into extended length of polymer fibers. This has heralded a novel path and platform towards
sensing of different physical quantities such as temperature, chemicals, acoustic waves, and optical
signals. The challenges and opportunities associated with this new class of fiber devices will be
presented. In particular, we will discuss the materials and fabrication approach of multimaterial fibers.
We will then present the latest results on photodetecting fiber sensors patterning to their performance
and use in novel sensing designs. We will also introduce the recent development of active fiber
devices that integrate a thin ferroelectric polymer layer for acoustic sensing applications. Finally, some
aspects of the coming innovation and future prospect of the multimaterial fiber sensing technology
will be discussed.