Optical fibre Bragg reflectors have been fabricated using a single pulse of high power 249 nm excimer laser light to photoinduce point-by-point each individual index element forming the grating. Bragg reflectors with a length of 360 mu m and reflectivity of 70% have been made.

Electronics Letters
Department of Electronics

Albert, J, Malo, B., Hill, K.O., Bilodeau, F., & Johnson, D.C. (1993). Point-by-point fabrication of micro-Bragg gratings in photosensitive fibre using single excimer pulse refractive index modification techniques. Electronics Letters. doi:10.1049/el:19931110