An InGaAs pin-photodetector and a lumped SHBT transimpedance preamplifier have been monolithically integrated and characterised. The preamlifier achieves a transimpedance gain of 44.6 dBΩ (170 Ω) and the optical/electrical –3 dB bandwidth of the entire receiver is 46 GHz, which is the highest bandwidth for any HBT based photoreceiver reported to date.
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http://iet.metastore.ingenta.com/content/journals/10.1049/el_19990053
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