Ultrawide-band photonic time-stretch A/D converter employing phase diversity
Abbreviated Journal Title
IEEE Trans. Microw. Theory Tech.
fiber optics; microwave photonics; optical signal processing; photonic; analog-to-digital (A/D) conversion; time stretch; TO-DIGITAL CONVERSION; SIGNALS; Engineering, Electrical & Electronic
The performance of analog-to-digital converters can be greatly enhanced by preprocessing the analog signal using the photonic time-stretch technique. The analog bandwidth of a time-stretch preprocessor is limited by dispersion-induced frequency fading. In this paper, we propose and demonstrate a new implementation of the time-stretch analog-to-digital (A/D) conversion system that overcomes the bandwidth limitation. It is shown that the fading phenomenon can be mitigated by using phase diversity, and the maximum ratio combining algorithm is identified as a potential technique for maximizing the signal-to-noise-ratio.
Ieee Transactions on Microwave Theory and Techniques
"Ultrawide-band photonic time-stretch A/D converter employing phase diversity" (2005). Faculty Bibliography 2000s. 5250.