A monolithically integrated frequency mixing photoreceiver

A monolithically integrated photoreceiver/mixer for long-wavelength optical communication and switching is discussed. The circuit uses a narrow gate junction field effect transistor as a voltage tunable feedback resistor to achieve high-efficiency low-distortion mixing. An overall opto-electronic conversion gain of 20 dB and a second-order frequency product of -26 dBc have been measured.<
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