Drawing equipment and line diameter control method of the GRIN lens fiber

摘要

The improved control of the wire diameter when drawn from the preform the fiber GRIN lens, to improve the manufacturing yield of the GRIN lens fiber wire diameter is within a desired range. The diameter measuring device B for measuring the outer diameter of the GRIN lens fiber in the furnace outside the diameter a, measured in diameter measuring device A for measuring the outer diameter of the GRIN lens fiber is stretched in a heating furnace at a diameter b was measured by diameter c is corrected by the diameter α is the value of the diameter a of the previous time period T given, and by controlling the draw speed, is to solve the above problems.