The integration of metasurfaces onto the end faces of optical fibers holds great promise for numerous applications. Traditional top-down fabrication struggles with optical fiber geometry. Our presentation reveals a solution: 3D nanoprinting via direct laser writing to create nanopillar metasurfaces on fiber end faces. This concept gives rise to a novel kind of fiber devices called meta-fibers, allowing for shaping the fiber's output properties. We showcase two applications: (i) achromatic fiber-interfaced metasurface lenses covering the entire telecommunication range, and (ii) meta-fibers generating structured light. These meta-fibers utilize dielectric nanopillars of varying heights, a capability unique to the nanoprinting process.
We demonstrate a metafiber platform capable of creating arbitrarily structured light on the hybrid-order Poincaré sphere. The metasurface is directly printed on the end face of a commercial polarization-maintaining optical fiber through 3D laser nanoprinting process. The release of height degree of freedom greatly expands the 3D meta-atom library, empowering metasurfaces to independently manipulate phase and polarization. Our work provides a paradigm for advancing optical fiber science and technology towards fiber-integrated light shaping, which may find important applications in fiber communications, fiber lasers and sensors, endoscopic imaging, fiber lithography, and lab-on-fiber technology.
We demonstrate the use of 3D direct laser writing method to fabricate large-scale 3D metasurfaces with unleashed height degree of freedom. We showcased multiple 3D laser-nanoprinted metasurfaces for a range of photonic applications, including ultrahigh-bandwidth holography, metafibre-enabled optical trapping, highly sensitive molecular sensing, achromatic fibre-optic focusing and imaging, and structured light generation on metafibres. The optical performance of our demonstrated 3D laser-nanoprinted metasurfaces surpass existing 2D metasurfaces fabricated from planar lithography. This metasurface fabrication platform allows superior integration with other photonic elements, such as optical fibres, holding great potential for advanced classical and quantum light manipulation.
In this presentation, a new concept of an achromatic metafiber that focuses light coming out from the fiber facet over wavelengths of interest will be introduced. The achromatic metafiber consists of achromatic metalens microprinted on a telecommunication single-mode fiber. The 3D meta-atoms of which height is a geometric degree of freedom provide large variation of group delay, capable of realizing large time-bandwidth product. As a demonstration, direct scanning confocal imaging using the metafiber is facilitated over entire telecommunication wavelengths. Our compact achromatic metafiber may envisage many photonics applications such as hyperspectral imaging, in vivo deep-tissue imaging, and wavelength-multiplexed fiber communications.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.