BANDWIDTH ENHANCEMENT OF A METAL-SEMICONDUCTOR-METAL PHOTODETECTOR ARRAY

Analyses and detailed simulations of the bandwidth performance of a metal-semiconductor-metal photodetector (MSM-PD) array were carried out. Based on a simple model of an array with two MSM-PDs, analytical expressions were derived to calculate the transfer function of the array, from which the 3-dB bandwidth of the MSM-PD is determined. The extrinsic responses of the 1 X 8 MSM-PD array were examined by introducing packaging elements. It is shown that the use of bonding wires with appropriate length results in an improvement of the 3-dB bandwidth compared to that of the intrinsic MSM-PD array. (C) 1995 John Wiley & Sons, Inc.