40G Balanced photodetector Balanced Photodetector U2T (Finisar) BPRV2225/ BPRV2125A
The balanced photoreceiver is double fiber tail fiber input,rate 43Gbps,can be applied to DPSK system;RF interface GPPO,differential output; differential conversion gain 2800V/W,3dB cut-off frequency 31GHz,typical output voltage swing 600mV[BPRV2125A] or 550mV[BPRV2125] under the datasheet conditions. The balanced photoreceiver module BPRV2125(A) is a differential front-end for 43Gbits/s DPSK-applications featuring high differential gain. The photo-receiver module contains two waveguide-integrated PIN photodiode (PD) and a single chip and limiting amplifier (LA) within one small form factor SMD-package. The Receiver is therefore well suited for DPSK and DQPSK applications at 40G and 100G with rates between 20G and 56GBaud. The DC output voltage can be monitored for OUTN and OUTP independently. For each amplifier path a threshold control at a linear amplification stage should be applied to ensure an optimized differential output signal. An excellent electrical and optical phase propagation is achieved by a total skew of lower than 5ps between the balanced signal paths.
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