The core refractive index of Corning SMF-28 optical fibre exposed to ArF laser pulses increases with the square of the fluence per pulse. Bragg gratings with a refractive index modulation amplitude higher than 10 -3 have been obtained. This is an order of magnitude improvement over previously reported values for this type of fibre in the absence of treatment to enhance the photosensitivity.

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Journal Electronics Letters
Malo, B. (B.), Albert, J, Hill, K.O. (K. O.), Bilodeau, F. (F.), Johnson, D.C. (D. C.), & Theriault, S. (S.). (1995). Enhanced photosensitivity in lightly doped standard telecommunication fibre exposed to high fluence ArF excimer laser light. Electronics Letters, 31(11), 879–880. doi:10.1049/el:19950624