Photonic generation of linearly chirped millimeter wave based on comb-spacing tunable optical frequency comb

Zongyang Xia; Weilin Xie; Dongning Sun; Hongxiao Shi; Yi Dong; Weisheng Hu

doi:10.1117/1.OE.52.12.126107

19 December 2013 Photonic generation of linearly chirped millimeter wave based on comb-spacing tunable optical frequency comb

Zongyang Xia, Weilin Xie, Dongning Sun, Hongxiao Shi, Yi Dong, Weisheng Hu

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Optical Engineering, Vol. 52, Issue 12, 126107 (December 2013). https://doi.org/10.1117/1.OE.52.12.126107

Abstract

We demonstrated a photonic approach to generate a phase-continuous frequency-linear-chirped millimeter-wave (mm-wave) signal with high linearity based on continuous-wave phase modulated optical frequency comb and cascaded interleavers. Through linearly sweeping the frequency of the radio frequency (RF) driving signal, high-order frequency-linear-chirped optical comb lines are generated and then extracted by the cascaded interleavers. By beating the filtered high-order comb lines, center frequency and chirp range multiplied linear-chirp microwave signals are generated. Frequency doubled and quadrupled linear-chirp mm-wave signals of range 48.6 to 52.6 GHz and 97.2 to 105.2 GHz at chirp rates of 133.33 and 266.67 GHz/s are demonstrated with the ±1 st and ±2 nd optical comb lines, respectively, while the RF driving signal is of chirp range 24.3 to 26.3 GHz and chirp time 30 ms.

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Zongyang Xia, Weilin Xie, Dongning Sun, Hongxiao Shi, Yi Dong, and Weisheng Hu "Photonic generation of linearly chirped millimeter wave based on comb-spacing tunable optical frequency comb," Optical Engineering 52(12), 126107 (19 December 2013). https://doi.org/10.1117/1.OE.52.12.126107

Published: 19 December 2013

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