Low transmission loss optical fiber having a grating

Details Low transmission loss optical fiber having a grating Low transmission loss optical fiber having a grating

1997-07-10

1999-03-16

Palmer, Phan T. H.

Optical waveguides

With optical coupler

Input/output coupler

385 10, 385126, 372102, G02B 634

Patent

active

058839909

ABSTRACT:
The present invention relates to an optical fiber grating as an optical component comprising an optical fiber having a core and a cladding, and a grating photowritten in the optical fiber. In particular, in the optical fiber grating in accordance with the present invention, the optical fiber into which the grating periodically changing the refractive index in the waveguide along the advancing direction of light is photowritten has a depressed cladding type refractive index profile. Accordingly, when the configuration of the optical fiber having a depressed cladding type refractive index, employed as the object in which the grating is photowritten, is changed, the stability in characteristics as the optical component or the like can easily be improved.

REFERENCES:
patent: 5703978 (1997-12-01), DiGiovanni et al.
L. Dong et al., 22nd European Conference on Optical Communication -ECOC '96, Oslo, "Cladding Mode Coupling Suppression in Fibre Bragg Gratings Using Fibres With a Depressed Cladding", MoB.3.3, pp. 1.53-1.56.
Delevaque et al., "Optical Fiber Design for Strong Gratings Photoimprinting With Radiation Mode Suppression", pp. 2-5.
Wada et al., General Conference of Electronic Information Communication Society, 1996, "Fiber Bragg Gratings", pp. 1-8.
"Theory of Optical Waveguides", Katsunari Okamoto 1992, Corona Publishing Co., Ltd., Tokyo, Japan.

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