Patent ID: 9513433
Filing Date: 2016-12-06
CPC Classification: G02B

Claim Text:
1. An apparatus for generating long-period gratings in an optical fiber, the apparatus comprising: an intensity adjusting unit configured to adjust a radius of curvature of gratings generated in an optical fiber; and a period adjusting unit configured to adjust a period of the gratings generated in the optical fiber, wherein the period adjusting unit comprises: a grating generating unit configured to generate the gratings in the optical fiber; and a period adjusting mechanism configured to selectively increase and decrease a length of the grating generating unit, wherein the period adjusting mechanism comprises: a period adjusting knob configured to be rotatable; a pair of driven gears operatively connected to the period adjusting knob, and configured to be rotated in opposite directions; and a grating period determination unit connected to opposite ends of the grating generating unit, and configured such that a location of the grating period determination unit is changed through rotation of the pair of driven gears to change a length of the grating generating unit.