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6The fabrication of micro-structures on the fiber end by femtosecond laser two-photon polymerization technique
C.P. Lang1*, H.R. Meng1**, D.H. Gao1, M. Luo1, X. Liu1, Z.Y. Ma1
1- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences
* [email protected]. cn, * * [email protected]
Microstructures fabricated by two-photon polymerization (TPP) technique are widely applied in metasurface [1], micro mechanical [2], and micro-optical fields [3], owing to their advantages of high resolution, high precision and biological compatibility. In recent years, the microstructures on the optical fiber end-faces fabricated by using TPP technique have been reported to modulate the output light field. These structures are widely applied in integrated devices as the complex photoelectric conversion system is effectively avoided. Optical fiber sensors also have important applications in the integrated micro-device owing to their small sizes, light weights and anti-electromagnetic interference.
We fabricated different micro-structures on the fiber end by femtosecond laser two-photon polymerization technology, as shown in Fig. 1. The light signal emitted from optical fibers not only can be modulated by the micro-structures, but also can control the micro-structures composed of different responsive materials. The three-dimensional micro-structures fiber functional devices with good stability and high resolution can be used for sensing, imaging and integrated photonic chip applications [4]. Femtosecond laser induced two-photon polymerization has the advantages of ultrahigh processing accuracy which breaks through the optical diffraction limit and true three-dimensional processing ability of direct writing without mask. It has unique advantages in the processing of micro/nano-structure, and provides a new idea and possibility for the integration of micro/nano-structure and optical fiber.
Femtosecond laser two-photon polymerization technology
Fig. 1. The Fabrication of Micro-structures on the Fiber end by Femtosecond laser two-photon polymerization technology.
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