Bhp. Dorren et al., Low-crosstalk penalty MZI space switch with a 0.64-mm phase shifter using quantum-well electrorefraction, IEEE PHOTON, 13(1), 2001, pp. 37-39
We investigate Mach-Zehnder interferometric (MZI) space switches with quant
um-well phase shifters. We find that the minimum phase shifter length is li
mited by additional crosstalk due to electroabsorption-induced imbalance in
the MZI. This criterion also provides an optimal detuning between the band
gap and the operating wavelength of the MZI. Finally, we present a novel MZ
I with an ultrashort 0.64-mm phase shifter.