Photonic Frequency Measurement and Signal Separation for Pulsed/CW Microwave Signals
作者： Bing Lu , Wei Pan , Xihua Zou , Bin Luo , Lianshan Yan
关键词: Pulse repetition frequency 、 Signal 、 Optical filter 、 Microwave 、 Optoelectronics 、 DC bias 、 Materials science 、 Photonics 、 Frequency multiplier 、 Source separation
摘要: A novel photonic approach to simultaneously implement frequency measurement and signal separation is proposed experimentally demonstrated for pulsed continuous-wave (CW) microwave signals. In this approach, a light wave externally modulated with carrier suppressed by or CW be measured, then sent two optical complementary filters perform frequency-to-amplitude mapping. The outputs of the are detected low-speed photodetectors, low-frequency alternating currency (AC) electronic component direct current (DC) one being generated. can estimated monitoring power AC component, while discriminated from DC realized. proof-of-concept experiments, within range 5 20 GHz, errors less than ±0.1, ±0.11 , ±0.13 GHz achieved pulse repetition 0.25, 0.5, 1 MHz, whereas ±0.08 derived signal.
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