Fig. 1. Schematic of a temperature-compensated fiber grating laser.

Fig. 2. Experimental setup of temperature compensation by performing a cleave-rotate-splice process. ISO: isolator. PD: photodetector. PC: polarization controller.

Fig. 3. Measured beat spectra of the fiber grating laser before and after the cleave-rotation-splice treatment.

Fig. 4. Measured temperature responses of the individual temperature-compensated fiber grating lasers.

Fig. 5. (a) Measured spatial sensitivity to transverse load before and after the treatment. (b) The measured responses to the applied mass for lasers before and after treatment.

Fig. 6. Measured beat frequency variation for a laser before and after temperature compensation over 800 s.