Title :
Apodisation of the spectral response of fibre Bragg gratings using a phase mask with variable diffraction efficiency
Author :
Albert, J. ; Hill, K.O. ; Malo, B. ; Theriault, S. ; Bilodeau, F. ; Johnson, D.C. ; Erickson, L.E.
Author_Institution :
Communications Res. Center, Ottawa, Ont., Canada
fDate :
2/2/1995 12:00:00 AM
Abstract :
Bragg gratings with sidelobe levels 26 dB lower than the peak reflectivity have been fabricated in standard telecommunication optical fibres by exposure to ultraviolet light through a phase mask with a locally varying diffraction efficiency. This represents a reduction of 14 dB in the sidelobe levels compared to uniform gratings with the same bandwidth and reflectivity
Keywords :
diffraction gratings; optical fibre fabrication; phase shifting masks; photoreflectance; UV light exposure; fibre Bragg gratings; phase mask; sidelobe levels reduction; spectral response apodisation; standard telecommunication optical fibres; ultraviolet light exposure; variable diffraction efficiency;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19950146
