Fig. 7
Top: raw spectrum of the black-body source in the 2–14 μm range. Transmission spectra of the raw black body. Central-top: two measurements (red and green curves) of the black-body source spectrum after coupling into a chalcogenide channel waveguide with opto-geometrical parameters similar to the Y-junction ones. Central-bottom: zoom on the single-mode cutoff wavelength region. Bottom: zoom on the typical white light interferogram obtained with the FTS.
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