公开(公告)号：US12189176B2

公开(公告)日：2025-01-07

申请号：US17502997

申请日：2021-10-15

Applicant: TERAXION INC.

Inventor： Samuel Gouin ,  Claude Carignan ,  Mathieu Faucher ,  François Trepanier ,  Guy Rousseau ,  Martin Bernier ,  Alain Villeneuve

IPC: G02B6/02 ,  C03C25/622

Abstract: A method and a system for providing a low absorption Bragg grating along a grating region of an optical fiber are presented. The Bragg grating is written along the grating region by multiphoton absorption of ultrafast light pulses impinged on this grating region through a polymer coating of the optical fiber. The Bragg grating is then photobleached by propagating a photobleaching light beam along the optical fiber. The photobleaching light beam has optical parameters selected to reduce defects in the grating region induced by the writing of the Bragg grating in a substantially non-thermal regime.