These Ytterbium-doped VLMA fibres/fibre tapers have a very large mode area that makes them particularly suited for integrating in high power amplifiers/lasers emitting at 1064nm. True singlemode behavior enabling diffraction limited beam quality output can be implemented by coiling the fibre and filter the higher-order modes. Precision preform and fibre draw manufacturing processes enable excellent fibre consistency and uniformity using total dopants vapor phase delivery process. Matching GRIN fiber is also available for monolithic integration with LMA 10-125 PM pump combiners.