Phase noise is inevitably present in wireless communications, arising from both hardware
impairments and imperfect channel estimation, and has substantial implications on the …

We review recent advances in distributed fiber optic sensing (DFOS) and their applications.
The scattering mechanisms in glass, which are exploited for reflectometry-based DFOS, are …

We demonstrate a vibration detection and localization scheme based on bidirectional
transmission of telecom signals with digital coherent detection at the receivers. Optical …

We exploit the coherence of frequency combs for high spectral efficiency superchannel
transmission via effective sharing of a single pilot tone. By phase-locking the receiver comb …

140G/70G Direct Detection PON with>37 dB Power Budget and 40-km Reach
Enabled by Colorless Phase Retrieval Full Field Page 1 140G/70G Direct Detection PON …

Coherent optical communication systems have high receiver sensitivities, high spectral
efficiencies, and high-capacity information transmission, which are widely used in free …

Carrier frequency offset (CFO) estimation is very important for the optical fiber
communications and has been studied widely in linear coherent systems, while only a few …

We propose a novel carrier phase recovery (CPR) method in probabilistically-shaped (PS)
coherent systems. This method targets to make the distribution of the received samples …

A number-theoretic net (NT-net)-based Gaussian particle filter (NT-GPF) is proposed for the
joint estimation of frequency offset (FO) and linear phase noise (LPN) in a dynamic and real …

We present dual-polarization complex-weighted, decision-aided, maximum-likelihood
algorithm with superscalar parallelization (SSP-DP-CW-DA-ML) for joint carrier phase and …