We describe a technique for inscribing identical fiber Bragg gratings into each core of a multicore fiber. This is achieved by introducing an additional surface into the optical path to mitigate lensing by the curved surface of the fiber cladding.
Lindley, E. Y., Min, S., Leon-Saval, S. G., Cvetojevic, N., Lawrence, J., Ellis, S. C., Bland-Hawthorn, J. Writing Bragg Gratings in Multicore Fibers. J. Vis. Exp. (110), e53326, doi:10.3791/53326 (2016).