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Analog-to-digital converter using a continuous-wave laser and a timing reference derived from a multifrequency optical signal
Analog-to-digital converter using a continuous-wave laser and a timing reference derived from a multifrequency optical signal
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机译:使用连续波激光器和从多频光信号得出的时序基准的模数转换器
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摘要
An analog-to-digital converter can produce a digital signal representative of an analog input electrical signal. A continuous-wave laser can lock to a multifrequency optical signal and produce a continuous-wave optical signal. An optical amplitude modulator can modulate the continuous-wave optical signal using the analog input electrical signal to produce a first modulated optical signal. An optical splitter can split the first modulated optical signal into a plurality of modulated optical signals. A plurality of detectors can convert the modulated optical signals into respective modulated electrical signals. A plurality of comparators and a decoder arranged in a flash converter topology can receive the modulated electrical signals and output the digital signal using a timing reference derived from the multifrequency optical signal. Using a relatively high-precision multifrequency optical signal, such as produced by a photonic oscillator, can produce a relatively high-precision device.
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