The invention discloses a
polarization maintaining optical fiber with a small bending
radius and a manufacture method of the
polarization maintaining optical fiber and relates to the field of
optical fiber manufacture. The
polarization maintaining optical fiber comprises a silica cladding, a core layer, a second silica cladding ring, a third
fluorine-doped silica cladding ring and two stress cat eyes are sequentially arranged in the silica cladding from inside to outside, and the two stress cat eyes are in
central symmetry with the core layer. By means of the manufacture method, the bending
radius of the manufactured polarization maintaining
optical fiber is smaller than 5mm, operating
wavelength of the polarization maintaining
optical fiber is 1550nm, and supplementary deterioration of the polarization maintaining optical
fiber is under 0.4dB / km. According to the polarization maintaining optical
fiber, under the condition that the bending
radius is small, low-loss
information transmission of the polarization maintaining optical
fiber is achieved, low supplementary deterioration and good
crosstalk characteristics of the polarization maintaining optical fiber are guaranteed, fiber optic sensors with small sizes can be manufactured by means of the polarization maintaining optical fiber, and requirements of users are satisfied.