Design and characterisation of SRS filtering optical fibre for pulsed fibre laser beam delivery

摘要

We report on a design and fabrication of Stimulated Raman Scattering (SRS) filtering fibre for high average or high peak optical power delivery applications. The fibre geometry is based on the series of circularly arranged high index rod resonators embedded in the silica cladding. The operation principle relies on the resonant coupling of the core and resonators modes. The fabricated fibre demonstrated wide transmission window and filtering of SRS from the output spectra, robustness for bending and high output beam quality.