The Effect of Inductive Gain Peaking on a Photodetector’s Bandwidth
Pereira, J. T.
The Effect of Inductive Gain Peaking on a Photodetector’s Bandwidth, Proc International Symp. on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering - ISEF, Nancy, France, Vol. 1, pp. 1 - 4, August, 2019.
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Abstract
For high bit-rate optical communication systems one of the most important photodetector figures of merit is the bandwidth. The basic PIN structure has been widely used but its bandwidth is limited to about 20 GHz, due to the capacitive effects. Connecting an inductor to the output circuit of the photodetector may enhance its bandwidth. In this work several circuits are simulated in order to determine the best circuit and inductance values responsible for an optimum bandwidth increase. For the device under study, and an enhanced series gain peaking circuit, a bandwidth increase of about 53 GHz could be achieved with an inductance of 0.15 nH.
