Fabry-Perot vapor microsensor onto fibre endface fabricated by multiphoton polymerization technique

摘要

We report on the fabrication of a Fabry-Perot optical resonator on the endface of a SMF28 fibre, by employing Direct Laser Writing by multi-photon polymerization [1, 2]. We explore this fibre sensing probe for measuring the vapour of common organic solvents [3]. The device developed has been optimised for operation at the spectral region lying between 1445nm and 1655nm, while being interrogated in reflection mode using a simple 50/50 fibre coupler.