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Femtosecond Laser Inscribed Axial Long-period Fiber Gratings in two-mode fiber for Efficient Optical Angular Momentum Generation

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We demonstrate a novel all-fiber mode converter based on an axial long-period fiber grating which was inscribed in two-mode fiber using a femtosecond laser. The OAM±1,1 modes can be effectively generated using this mode converter.

© 2017 Optical Society of America

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