Laser-phased-array system provides an elegant means for achieving the inertial-free, high-resolution, rapid and random
beam steering. In laser-phased-array system, phase controlling is the most important factor that impacts the system
performance. A novel scheme is provided in this paper, the beam steering is accomplished by using crystal fiber array,
the difference length between adjacent fiber is fixed. The phase difference between adjacent fiber decides the direction of
the output beam. When the wavelength of the input fiber laser is tuned, the phase difference between the adjacent
elements has changed. Therefore, the laser beam direction has changed and the beam steering has been accomplished. In
this article, based on the proposed scheme, the steering angle of the laser beam is calculated and analyzed theoretically.
Moreover, the far-field steering beam quality is discussed.