Self-mixing interference in an all-fiberized configuration Er3+–Yb3+ codoped distributed Bragg reflector laser for vibration measurement

Self-mixing sensing technique can be used for measuring distances, displacements, velocities and vibration. In this paper, for good sensitivity vibration measurement system, self-mixing vibrator using an all-fiberized configuration Er3+–Yb3+ Distributed Bragg Reflector (EYDBR) laser is proposed and investigated for the first time. Results obtained demonstrate that all-fiberized configuration EYDBR laser present a powerful tool for the advancement of self-mixing vibration sensor and provide a potential remote measurement of the vibration compared with the optical feedback in other traditional fiber lasers.

► Self-mixing vibrator using an all-fiberized configuration Er3+–Yb3+ Distributed Bragg Reflector (EYDBR) laser is proposed and investigated.
► This all-fiberized configuration of EYDBR fiber laser self-mixing vibrator can earn inherent advantage of fiber lasers and keep high sensitivity of self-mixing sensor at the same time.
► The experiment phenomena show a good agreement with the simulation results, and validate the feasibility of all-fiberized configuration EYDBR laser for self-mixing interference application.