Pc. Clemens et al., 8-CHANNEL OPTICAL DEMULTIPLEXER REALIZED AS SIO2 SI FLAT-FIELD SPECTROGRAPH/, IEEE photonics technology letters, 6(9), 1994, pp. 1109-1111
The operation of a flat-field spectrograph in silica on silicon (SiO2/
Si) for 2-nm channel spacing is demonstrated. Crosstalk attenuations o
f > 20 dB and significantly reduced fiber-to-fiber insertion losses of
5 dB could be obtained.