摘要 : In this paper, we propose a broadband silicon Mach–Zehnder switch (MZS) for wavelength division multiplexing applications on photonic networks on chip. The proposed reconfigurable switch is based on a single-stage three-waveguide ... 展开 In this paper, we propose a broadband silicon Mach–Zehnder switch (MZS) for wavelength division multiplexing applications on photonic networks on chip. The proposed reconfigurable switch is based on a single-stage three-waveguide interferometric configuration in which the phase shift is achieved via a p-i-n diode. The device is analyzed by the coupled-mode theory and by the finite-difference beam propagation method. The proposed configuration leads to a considerable increase in the bandwidth with respect to the conventional MZS. For example, the two-waveguide MZS with a gap ${g}=0.30$ $mu$m between the two coupled waveguides exhibits bandwidth $Delta lambda =60$ nm, crosstalk ${rm CT} = - 15$ dB, and insertion loss ${rm IL} = 1.1$ dB. Conversely, a bandwidth $Delta lambda =115$ nm is achieved for the three-waveguide configuration to parity of the other parameters. 收起