POLARIZED WAVE HOLDING OPTICAL FIBER, AND METHOD OF PRODUCING THE SAME

摘要

On the basis of an intermediate (20A) having a clad (22) formed around the outer periphery of a core (21), a pair of holes (23, 24) are formed in the clad (22) on both side of the core (21) and in parallel with the z-axis, thus preparing an intermediate (20). With this intermediate (20), the width (Ry) measured in the direction of y-axis is smaller than the width (Rx) measured in the direction of x-axis. And a columnar, stress imparting section (33) is inserted in the hole (23) in the intermediate (20), while a columnar, stress imparting section (34) is inserted in the hole (24) in the intermediate (20) to serve as a base material (40), and while being integrated, these are drawn into a wire, whereby a polarized wave holding optical fiber is produced.