| 摘要 |
<p>The invention concerns an optical device with waveguide (1) for transferring electromagnetic energy in the form of a radiation beam (I) whose wavelength can be in the range of visible light and near infrared radiation, comprising a waveguide (1) extending between an input medium (2) and an output medium (3), having a material transparent structure with respect to the transmitted radiation and elongated in the radiation propagation direction (Z). The invention is characterised in that the waveguide (1) material structure has a maximum transverse dimension (Do), in the incident radiation beam (I) plane, which is less than half the wavelength μ of the incident beam (I), the waveguide (I) material structure has inhomogeneities in the optical refractive index in the radiation propagation direction (Z) and the transferred radiation is collected at a submicronic distance from the optical device waveguide (1) output surface (3a).</p> |
