Product Description

The XPDV3120R comprises an optimised 75 GHz waveguide-integrated photodiode, which shows an extremely flat frequency response, both in power and in phase. u²t's on-chip integrated bias network with an optimised RF design in particular ensures an undisturbed frequency response from DC to the 3 dB cut-off frequency and saves costs for internal bias-tees. The module is especially designed for optimal RF performance, therefore the pulse response reveals virtually no ringing. A further advantage of the waveguide structure is the unbeatable high-power behavior. The photodetector shows a linear response up to an optical input power of 10 dBm. An output voltage swing of more than 0.5 Vpp can be achieved for short pulses without any degradation of the pulse response. Each photodetector module is characterised in the frequency domain up to 75 GHz by using a heterodyne technique. In the time domain, a femtosecond pulse source and a 65 GHz sampling oscilloscope are used to measure the pulse response.

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