Utilizing High-Intensity Optical Subcarrier Signal for Conversion Gain Enhancement of a UTC-PD-Integrated HEMT Photonic Double-Mixer
2023 48TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, IRMMW-THZ(2023)
摘要
We experimentally investigated the effect of high-intensity subcarrier signal input to the UTC-PD-integrated HEMT photonic double-mixer for optical-to-wireless carrier frequency down-conversion. The conversion gain linearly increased with increasing the subcarrier signal intensity from +0.63 dBm to +6.63 dBm without saturation. As a result, the conversion gain enhancement of about +6 dB from -51.0 dB to -44.2 dB was achieved.
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