Cruz, J.L., Dong, L., Barcelos, S. and Reekie, L.
Applications of Bragg gratings written in etched fibres.
In, Institute of Physics Meeting on In-fibre Bragg Gratings and Special Fibres, London, GB,
In the recent years a large number of techniques have been developed to produce linearly chirped Bragg gratings. A novel technique based on tapering the fiber cladding in an etching bath has been recently reported, the variation of the fiber cross section results in a variation of the strain along the grating when the fiber is under tension, this strain gradient is used to chirp the grating. This technique has several advantages: apart from a good controllability resulting in high quality chirped gratings, it does not require active control, and it is highly versatile in producing a variety of chirp profiles. In this paper we report on the resultant chirp structures and applications from the versatility of this technique
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