The present invention provides a fiber base sensor and the fabricating method thereof. More specifically, one of the main goals of the present invention is to solve the problem existing in the prior art of the failure of forming a plurality of nano-particles on the surface of the fiber base sensor evenly by utilizing self-assembly process with the nano-imprint process. Furthermore, the another goal of the present invention is to provide detail parameters required in the said nano-imprinting process for avoiding the efficiency drop caused by over-embedding the nano-particles into the fiber based sensor. |