Precision wavelength control for automated fiber optic Bragg gra

Details Precision wavelength control for automated fiber optic Bragg gra Precision wavelength control for automated fiber optic Bragg gra

1997-06-09

1999-04-27

Ngo, Hung N.

Optical waveguides

With optical coupler

Input/output coupler

385 34, G02B 626

Patent

active

058988041

ABSTRACT:
The present invention provides a computer controlled apparatus and method for producing high quality fiber optic Bragg gratings. According to the invention, the apparatus (10) preferably includes a laser (12) for generating an ultraviolet beam (18), a rotatable scrapper mirror (32) disposed downstream of the laser (12) for receiving the beam (18) and an optical fiber (48) disposed adjacent an edge (84) of the mirror (32) for receiving a high fringe frequency interferrogram (86) formed by the mirror (32). The mirror (32) is coupled to a rotation stage (14) for rotating the mirror (32) about a pre-selected pivot point (36) relative to the angle of incidence of the beam (18) to vary the Bragg wavelength at the fiber core.

REFERENCES:
patent: 5377288 (1994-12-01), Kashyap et al.
patent: 5671308 (1997-09-01), Inoue et al.
patent: 5745617 (1998-04-01), Starodubov et al.

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