1 November 1996 Optical front-end design: a comparison between lossy matching and matched-feedback architectures
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Abstract
We present the design and realization of two optical front- ends in the bandwidth 0.5-10 GHz and with a transimpedance gain greater than 60 dB. The two amplifiers implement a lossy matching architecture with an interstage matching and a matched feedback architecture with a frequency controlled local feedback. We realized two hybrid circuits on an alumina substrate. A p-i-n photodiode has been placed on a ceramic substrate together with the three stage amplifier block. We propose a comparison between the two architecture taking into account the effects of the photodiode hybrid assembly. The parasitic link effects on the expected performances of the different architectures. We firstly measured on the photodiode hybrid circuit to verify its model: the response was not as flat as expected from the datasheet. Therefore we had to equalize the photodiode frequency response by means of an input reactive network.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Riccardo Carotenuto, Luisa Franchina, Alessandro Trifiletti, "Optical front-end design: a comparison between lossy matching and matched-feedback architectures", Proc. SPIE 2919, All-Optical Communication Systems: Architecture, Control, and Network Issues II, (1 November 1996); doi: 10.1117/12.256364; https://doi.org/10.1117/12.256364
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