Figure 3 | Optical characterization and sensing performance of the nanohole-clad waveguide. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Figure 3 | Optical characterization and sensing performance of the nanohole-clad waveguide.

Caption

Figure 3 | Optical characterization and sensing performance of the nanohole-clad waveguide. (a) Simulation results of the optical field distribution in the nanohole-clad waveguide. (b) Optical measurement showing the mode intensity profile and the transmission image under green-light (532 nm) excitation. (c) Scanning electron micrograph of Nanohole Cladding Waveguides (top), planar near-field distribution under 1550 nm excitation (middle), and 532 nm visible-light-excited optical field captured by infrared camera (bottom) (Scale bar: 5 μm). (d) 1D and 2D Raman mapping results of the Nanohole Cladding Waveguides, along with microscopic images after soaking in Rhodamine 6G，the 2D Raman map is overlaid on the microscopy image for intuitive visualization of the results. (Scale bar: 10 μm).

Credit

Lijing Zhong et al.

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