A novel all-fiber electric field ( {E} -field) sensor based on a tapered two-mode fiber (TTMF) structure integrated with disperse red 1/polymethyl methacrylate (DR1/PMMA) polymer film is demonstrated for the first time. Here, a TTMF sandwiched between two single-mode fibers (SMFs) works as the modal interferometer with HE11 and HE12 modes, allowing a high-refractive index (RI) sensitivity of 815...Show More
