Chirped distributed Bragg grating optical fibre filters

Details Chirped distributed Bragg grating optical fibre filters Chirped distributed Bragg grating optical fibre filters

1996-02-09

1997-02-11

Lee, John D.

Optical waveguides

With optical coupler

Input/output coupler

359570, 385 13, 385 27, G02B 634

Patent

active

056029497

ABSTRACT:
A distributed Bragg grating of uniform pitch is created in a length of unstrained optical fibre which is then secured in an arcuate path to a flexible plate so as to be displaced from the neutral surface of bending of that plate. Changing the curvature of the plate imparts axial strain in the fibre which is arranged to be non-uniform as the result of the path of the fibre being arcuate. This non-uniform strain has the effect of converting the uniform grating into a chirped grating, such as may for instance be used as a dispersion equaliser.

REFERENCES:
patent: 4807950 (1989-02-01), Glenn et al.
patent: 5007705 (1991-04-01), Morey et al.
patent: 5257273 (1993-10-01), Farries et al.
patent: 5388173 (1995-02-01), Glenn
patent: 5420948 (1995-05-01), Byron

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