Patent ID: 6633702
Filing Date: 2003-10-14
Classification: G02B

Abstract:
A device for adjustable chirping in-fiber Bragg gratings, comprising:a straight beam with a longitudinally uniform cross-section, uniformly bent by an external force in a vertical plane including the axis of the beam and an optical fiber provided with gratings, extending straight along said vertical plane in the beam when the beam is not loaded with the external force, from the top surface at one end to the bottom surface at the other end of the beam, penetrating on its way the neutral surface of the beam: a pair of arms, each extending parallel to the beam from respective ends in the same directions to the center of the beam in said vertical plane, having respectively one tip facing the other at the center of the beam, and a mechanism for moving said tips toward or away from the beam thereby bending the beam, which comprises a screw-nut arrangement and a motor, mounted at the center of a yoke, placed apart from the arms between a pair of protrusions provided at the respective joints of the arms.