Linear frequency modulated (LFM) phase‐sensitive optical time‐domain reflectometry (φ‐
OTDR) relieves the trade‐off between sensing range and spatial resolution; however, it is …

We propose a novel joint optical signal noise ratio (OSNR) and interchannel nonlinearity
(NL) estimation method by fractional Fourier transformation of linear-frequency modulation …

We have proposed and experimentally validated a novel approach to suppress interference
fading in phase-sensitive optical time-domain reflectometry (ϕ-OTDR) by employing dual …

In the digital subcarrier multiplexing (DSM) system, the absence of guard bands between the
adjacent low-baud-rate subcarriers exacerbates the impact of frequency offset (FO) on …

We develop a measurement scheme for the time and frequency offsets, along with their
compensation, for a coherent optical receiver. This relies on a modified constant amplitude …

By analyzing Newton's rings, often encountered in interferometry, using fractional Fourier
transform (FRFT), we can estimate the physical parameters, such as the curvature radius of …

Recent advancements have brought significant attention to photonic terahertz (THz)-
integrated sensing and communication (ISAC) systems. In this work, we present an adaptive …

Conference title, upper and lower case, bolded, 18 point type, centered Page 1 FrFT Based
Joint Time/Frequency Synchronization for Digital Subcarrier Multiplexing System Zihe Hu, Li …

In the photon-starving free space optical communication (FSOC) systems the optical signals
received often exhibit a very low OSNR due to the large transmission loss. Thus the digital …

We design a new kind of fractional Fourier transform superimposed training sequence (TS)
to simultaneously estimate linear distortions including chromatic dispersion (CD), timing …