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Compensation of imperfect phase mask with moving fibre-scanning beam technique for production of fibre gratings

1995; Institution of Engineering and Technology; Volume: 31; Issue: 17 Linguagem: Inglês

10.1049/el

1350-911X

W.H. Loh, M.J. Cole, M.N. Zervas, R.I. Laming,

Photonic Crystal and Fiber Optics

The authors experimentally demonstrate that the moving fibre-scanning beam technique is able to compensate for imperfections in a phase mask and thus improve the quality of the resulting fibre gratings. A 10 cm long 'uniform' phase mask which normally produces gratings with a 0.23 nm uncontrolled chirp has been corrected with their new writing technique to produce narrowband gratings with a 0.10 nm bandwidth.