Photonic time stretch and its application to analog-to-digital conversion
نویسندگان
چکیده
منابع مشابه
Photonic Time Stretch and Its Application to Analog-to-Digital Conversion
We demonstrate a new concept for analog-to-digital (A/D) conversion based on photonic time stretch. The analog electrical signal is intensity modulated on a chirp optical waveform generated by dispersing an ultrashort pulse. The modulated chirped waveform is dispersed in an optical fiber, leading to the stretching of its envelope. We have derived analytical expressions for the stretch factor an...
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Suppression of distortion induced by nonlinearity in a dynamical system (such as an analog optical link) is very challenging, particularly for a wide-bandwidth signal. Conventional compensation techniques are computationally intensive, significantly limiting their realization in real-time applications. Here, we propose and demonstrate an efficient digital postprocessing technique to suppress di...
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We show how time warps caused by nonuniform wavelength-to-time mapping in the photonic time-stretch analog-to-digital converter (ADC) can be digitally measured and removed. This is combined with digital correction of wavelength-dependent Mach-Zehnder modulator (MZM) bias offset to attain a 10 GHz bandwidth digitizer with >7 effective bits of resolution and 52 dB spur-free dynamic range. To the ...
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ژورنال
عنوان ژورنال: IEEE Transactions on Microwave Theory and Techniques
سال: 1999
ISSN: 0018-9480
DOI: 10.1109/22.775471