Fabricating photonic structures directly on the edge of an optical fiber opens opportunities in telecommunication, sensing, lab-on-fiber and as a replacement for the conventional free-space optics. The main advantages are long-term stability, compact size, ease of use, and the scalability. We report a novel method to fabricate 3D free-form photonic structures directly on the optical fiber using Nanoimprint Lithography. A series of “photonic-on-a-fiber” devices are presented including; high-refractive index Fresnel lensed fiber, vortex phase plate on a fiber, beam shaper, and a diffractive beam splitter on a fiber. Innovative fiber photonics devices enable cost-effective and simple wavefront manipulation.
Alexander Koshelev, Giuseppe Calafiore, Carlos Pina-Hernandez, Frances I. Allen, Scott Dhuey, Simone Sassolini, Edward Wong, Paul Lum, Stefano Cabrini, and Keiko Munechika, "Photonics on a fiber for wavefront manipulation," Proc. SPIE 10544, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XI, 105440A (Presented at SPIE OPTO: January 28, 2018; Published: 22 February 2018); https://doi.org/10.1117/12.2287571.
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