An external cavity semiconductor laser configuration, which employs fiber grating as feedback is reported in this paper. The fiber grating is fabricated by UV light exposure, with reflectivity of 50%. At injection current of 50 mA, output is over 1 mW and the MSR is 42 dB. The laser wavelength is tuned by applying strain along the fiber grating and by heating the fiber grating. With the applying-strain method, the tuning range of 2 nm is obtained.