Abstract

In this Letter, we present a novel structure to realize photonics-assisted compressive sensing (CS) with optical integration. In the system, a spectrally sparse signal modulates a multiwavelength continuous-wave light and then is mixed with a random sequence in optical domain. The optical signal passes through a length of dispersive fiber, the dispersion amount of which is set to ensure that the group delay between the adjacent wavelength channels is equal to the bit duration of the applied random sequence. As a result, the detected signal is a delay-and-sum version of the randomly mixed signal, which is equivalent to the function of integration required in CS. A proof-of-concept experiment with four wavelengths, corresponding to a compression factor of 4, is demonstrated. More simulation results are also given to show the potential of the technique.

© 2014 Optical Society of America

Photonics-enabled compressive sensing with spectral encoding using an incoherent broadband source

Zhijing Zhu, Hao Chi, Tao Jin, Shilie Zheng, Xianbin Yu, Xiaofeng Jin, and Xianmin Zhang
Opt. Lett. 43(2) 330-333 (2018)

Analysis of compressive sensing with optical mixing using a spatial light modulator

Zhijing Zhu, Hao Chi, Shilie Zheng, Tao Jin, Xiaofeng Jin, and Xianmin Zhang
Appl. Opt. 54(8) 1894-1899 (2015)

Photonic compressive sensing of sparse radio frequency signals with a single dual-electrode Mach–Zehnder modulator

Bo Yang, Shuna Yang, Zizheng Cao, Jun Ou, Yanrong Zhai, and Hao Chi
Opt. Lett. 45(20) 5708-5711 (2020)

Microwave spectrum sensing based on photonic time stretch and compressive sampling

Hao Chi, Ying Chen, Yuan Mei, Xiaofeng Jin, Shilie Zheng, and Xianmin Zhang
Opt. Lett. 38(2) 136-138 (2013)

Photonics-assisted compressed sensing of radio frequencies with a rate-doubled bipolar random sequence

Runcheng Li, Hao Chi, Bo Yang, Shuna Yang, and Tao Jin
Opt. Lett. 48(3) 692-695 (2023)