| 摘要 |
An optical spectrometer (1) comprises at least two coupling apertures (6a, 6 b) with different mode field diameters, a means (8) for dispersing the light beams (12a, 12b) exiting each of the coupling apertures (6a, 6b) along a dispersion axis and at least two decoupling apertures (11a, 11b) on which the dispersed light beams are image d and whose mode field diameters each correspond to the mode field diameters of th e associated coupling apertures (6a, 6b). Due the enlarged mode field diameter , a larger spectral fraction of dispersed light beams, i.e. light of a larger spectral bandwidth, can be coupled into the decoupling aperture (11b) than into the decoupling aperture (11a).
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