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Optical impedance matching with scanning near-field optical microscopy
Journal of Physics D: Applied Physics
We present an experimental study of the coupling of light from a waveguide into a submicron size optical transmission line. We demonstrate that the coupling efficiency depends upon the polarization direction in the waveguide. On the condition when a quasi TEM mode is launched in the transmission line we observe a substantial enhancement of the coupling efficiency. We demonstrate that the coupling efficiency also depends on the mismatch of the impedances of waveguide and transmission line, thatdoi:10.1088/0022-3727/36/18/003 fatcat:e4ivpqyxgbfvtbjti7h3sqbfkq