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Design parameters of a tunable multiple-quantum-well interference filter

In this paper, the authors have studied the design parameters of a tunable multiple quantum well interference filter. Analogous to the optical thin film filter, an electron wave interference filter is analyzed using the transfer matrix method. The numerical values of the design parameters such as 3-dB bandwidth and quality factor are calculated for various filter configurations with variable number of layers and different thickness values of the film layer for a pass wavelength of 100Å. The tunability of the filter is also investigated.