Optical Fiber Tweezers Fabricated by Guided Wave Photo-Polymerization

Abstract

Abstract:In this work the use of guided wave photo-polymerization for the fabrication of novel polymeric micro tips for optical trapping is demonstrated. It is shown that the selective excitation of linear polarized modes, during the fabrication process, has a direct impact on the shape of the resulting micro structures. Tips are fabricated with modes LP02 and LP21 and their shapes and output intensity distribution are compared. The application of the micro structures as optical tweezers is demonstrated with the manipulation of yeast cells.

New Trends on Optical Fiber Tweezers

“…With this method, it is possible to have structures with various designs, which can be tailored for specific applications. Additional details on this special feature of the fabrication method and their outcomes are described in reference [65]. In the first scheme of Fig.…”

Improved Fabrication of Polymeric Optical Fiber Tweezers for Single Cell Detection

“…The fabrication of the fiber tip polymeric lenses (SM and SM+MM) is based on the photo-polymerization process described in references [6][7][8][9][10]. Several optical fiber tips were fabricated using the conventional fabrication method (SM) and the variant proposed here (SM+MM).…”

“…In the fabrication of the new SM+MM tip, we start by cleaving the two types of optical fiber. A SM fiber at 980 nm (Thorlabs SM 980-5.8-125), the same used for the standard SM tips [6][7][8][9], and a section of a MM fiber (Thorlabs MM 0.22 NA, φ 50 µm, 250-1200 nm). The two fiber sections are then spliced together.…”

“…A diversity of fiber based OT has been reported, where different mechanisms were used to fabricate a lensed tip, including chemical etching, thermal pulling or high resolution micromachining using FIB [4] or fs laser systems [5]. In 2015, it was demonstrated, for the first time, 2D optical trapping of yeasts and synthetic particles [6], using a single mode fiber (SM) with a polymeric lens fabricated by a low cost self-guided photo-polymerization technique [10]. More recently these devices were used to simultaneously trap, detect and classify different micron-sized particles and cells through short-term back-scattered signal analysis [7,8].…”

Lab on Fiber Technology for biological sensing applications

“…Recently, Ribeiro et al. demonstrated a low‐cost and rapid fabrication process based on guided‐wave photo‐polymerization for realizing OT‐fibers. Essentially, they deposit on the fiber tip a photo sensitive liquid, and successively coupling directly to the fiber polymerizing light, resulting in the formation of self‐assembled structures, which are auto aligned with the optical fiber core.…”