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Optical Engineering • Open Access

Photonic generation of linearly chirped millimeter wave based on comb-spacing tunable optical frequency comb
Author(s): Zongyang Xia; Weilin Xie; Dongning Sun; Hongxiao Shi; Yi Dong; Weisheng Hu

Paper 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.

Paper Details

Date Published: 19 December 2013
PDF: 6 pages
Opt. Eng. 52(12) 126107 doi: 10.1117/1.OE.52.12.126107
Published in: Optical Engineering Volume 52, Issue 12
Show Author Affiliations
Zongyang Xia, Shanghai Jiao Tong Univ. (China)
Weilin Xie, Shanghai Jiao Tong Univ. (China)
Dongning Sun, Shanghai Jiao Tong Univ. (China)
Hongxiao Shi, Shanghai Jiao Tong Univ. (China)
Yi Dong, Shanghai Jiao Tong Univ. (China)
Weisheng Hu, Shanghai Jiao Tong Univ. (China)

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