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Abstract
In wideband optical communications the bandwidth and the noise of optical receivers are crucial problems. The application of a distributed amplifier instead of a transimpedance amplifier in an optical receiver has the advantage of high speed and low noise [1],[2]. But the characteristics of an optical receiver are not only determined by the parameters of the photodiode (PD) and the distributed amplifier driven by the diode, but they are also greatly influenced by the matching circuit [3]. In this paper this effect is investigated. The gain and the input equivalent noise current of the amplifier are compared in different matching configurations based on computer simulations. One of the matching circuits has been experimentally verified as well.
