In order to obtain stable polarization laser, asymmetrical current injection into rectangle-shape vertical cavity surface emitting laser (ACIR-VCSEL) with oxidation aperture dimension of 70 μm × 10 μm is studied and manufactured. Room temperature (RT) continuous-wave (CW) light-current-voltage characteristics of a VCSEL described above are tested. Slope efficiency is 0.483 W/A with differential series resistance of 23.5 W. The orthogonal polarization suppression ratio is more than 5 over the whole range of operating current. The maximum power polarization ratio is 14 at current of 15 mA. Ring current injection into rectangular VCSEL (RCIR-VCSEL) with the same oxidation aperture dimensions of ACIR-VCSEL is also studied as a comparison. In the same test conditions, the slope efficiency is 0.568 W/A with differential series resistance of 18.1 W. The minimum orthogonal polarization suppression ratio is more than 2.6 over the whole range of operating current and the maximum power polarization ratio is 9. For ACIR-VCSEL, although the slope efficiency is a little decrease and the differential series resistance increases, the maximum polarization ratio effectively increases and more stable polarization is achieved.