Jump to main content
Jump to site search

Issue 22, 2016
Previous Article Next Article

Integrative optofluidic microcavity with tubular channels and coupled waveguides via two-photon polymerization

Author affiliations

Abstract

Miniaturization of functional devices and systems demands new design and fabrication approaches for lab-on-a-chip application and optical integrative systems. By using a direct laser writing (DLW) technique based on two-photon polymerization (TPP), a highly integrative optofluidic refractometer is fabricated and demonstrated based on tubular optical microcavities coupled with waveguides. Such tubular devices can support high quality factor (Q-factor) up to 3600 via fiber taper coupling. Microtubes with various diameters and wall thicknesses are constructed with optimized writing direction and conditions. Under a liquid-in-tube sensing configuration, a maximal sensitivity of 390 nm per refractive index unit (RIU) is achieved with subwavelength wall thickness (0.5 μm), which offers a detection limit of the devices in the order of 10−5 RIU. Such tubular microcavities with coupled waveguides underneath present excellent optofluidic sensing performance, which proves that TPP technology can integrate more functions or devices on a chip in one-step formation.

Graphical abstract: Integrative optofluidic microcavity with tubular channels and coupled waveguides via two-photon polymerization

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 14 Sep 2016, accepted on 10 Oct 2016 and first published on 10 Oct 2016


Article type: Paper
DOI: 10.1039/C6LC01148A
Citation: Lab Chip, 2016,16, 4406-4414
  •   Request permissions

    Integrative optofluidic microcavity with tubular channels and coupled waveguides via two-photon polymerization

    Y. Li, Y. Fang, J. Wang, L. Wang, S. Tang, C. Jiang, L. Zheng and Y. Mei, Lab Chip, 2016, 16, 4406
    DOI: 10.1039/C6LC01148A

Search articles by author