Ultrahigh dispersion of broadband microwave signals by incoherent photonic processing

Optics Express
Yongwoo Park, José Azaña

Abstract

We propose and demonstrate a fiber-optic incoherent signal processing scheme to achieve extraordinary dispersion amounts on arbitrary microwave signals with bandwidths over tens of GHz. Using this new scheme, we experimentally achieve microwave dispersion values approaching 24 ns/GHz (equivalent to the dispersion induced by a section of standard single-mode fiber with a length of approximately 185,000 km). The scheme is used for real-time Fourier transformation (linear frequency-to-time mapping) of nanosecond-long microwave signals, including a square-like waveform, a sinusoidal pulse and a double pulse waveform, with bandwidths over 20 GHz.

References

Nov 7, 2008·Nature·Mark A FosterAlexander L Gaeta
Apr 17, 2009·Optics Letters·Yongwoo Park, José Azaña
Apr 16, 2007·Optics Express·Yongwoo ParkJosé Azaña
Jun 15, 1993·Optics Letters·M R HeeE A Swanson
Mar 20, 2010·Optics Letters·Yongwoo Park, José Azaña

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Citations

Nov 22, 2016·Scientific Reports·Xiao ZhangPing Xue
Feb 7, 2018·Optics Express·Ming LiNinghua Zhu
Jan 16, 2019·Applied Optics·Michael E DurstEmma Moskovitz
Aug 15, 2014·Optics Letters·Bo Li, José Azaña
Dec 29, 2020·Optics Express·Xiao ZhangPing Xue

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