Method of and a device for making Bragg gratings in optical fibe

Details Method of and a device for making Bragg gratings in optical fibe Method of and a device for making Bragg gratings in optical fibe

1998-04-27

1999-09-14

Palmer, Phan T. H.

Optical waveguides

With optical coupler

Input/output coupler

385147, 385 33, G02B 634

Patent

active

059534729

ABSTRACT:
A method and a device are described for the simultaneous fabrication of identical Bragg gratings in different optical fibres or optical waveguides. The fibres/waveguides (1) are mounted side-by-side on a common support (2), along with a phase mask (3), which gives the desired intensity distribution to a writing radiation of the grating. Said common support (2) is reciprocated transversally to the longitudinal axis of the fibres or waveguides, at an appropriately low frequency such that each fibre/waveguide is exposed to such a radiation, at each pass under the radiation, for a time sufficient to start a refractive index change.

REFERENCES:
patent: 4725110 (1988-02-01), Glenn et al.
patent: 5093876 (1992-03-01), Henry et al.
patent: 5740290 (1998-04-01), Byron
patent: 5786914 (1998-07-01), Fielding
F. Bilodeau et al "High-Return-Loss Narrowband All-FiberBandpass Bragg Transmission Filter", IEEE Photonics Technology Letters, Jan. 1994, vol. 6, No. 1, pp. 80-82.

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