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Plane-by-plane fabrication of fiber Bragg gratings in optical fibers using short-pulse femtosecond IR laser is proposed and demonstrated. By incorporating a cylindrical lens in the fabrication setup, a plane of index modification can be directly inscribed in fiber core by a single laser pulse through the proposed method. This plane-by-plane method simplifies the grating inscription process and allows...
We have written for the first time high quality Bragg grating structures in highly nonlinear single mode bismuth oxide fibers. The grating inscription method is presented along with the annealing behavior of these gratings
Fibre Bragg gratings were written through the polyimide coating of commercial high NA fibres with ultrafast 800 nm radiation. Index modulations =2times10-4 remain after 140 hours at 360degC.
Fibre Bragg gratings (FBG), written in multimode 105??m core diameter silica fibre using ultrafast IR radiation, were probed using fibre collimators. Potential FBG usage as cavity reflectors in large mode area fibre lasers is discussed.
Fibre Bragg gratings were written in pure silica photonic crystal fibre tapers with 125 fs, 800 nm IR radiation. High reflectivity single and multimode responses were achieved with short exposure times.
We report for the first time Fibre Bragg gratings (FBGs) written in un-doped fluoride fibres. The gratings were written using femtosecond IR radiation from a Ti: Sapphire laser amplifier and the phase mask method.
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