We experimentally demonstrate a modulation format identification (MFI) and optical signal-to-
noise ratio (OSNR) monitoring method for digital coherent receivers by using the specific …

Optical performance monitoring (OPM) is an important tool to facilitate the management of
future optical fiber communication networks. OPM measures the states of the physical layer …

Timing recovery is critical for synchronizing the clocks at the transmitting and receiving ends
of a digital coherent communication system. The core of timing recovery is to determine …

A novel and blind optical modulation format identification (MFI) scheme assisted by signal
intensity fluctuation features is proposed for autonomous digital coherent receivers of next …

The problem of symbol rate estimation in Phase Shift Keying (PSK) modulated signals is
addressed. We show that machine learning based techniques can be used to estimate the …

As one of the key indicators of signal quality in fiber communication systems, optical signal-
to-noise ratio (OSNR) needs to be accurately monitored to ensure reliable network planning …

Optical signal-to-noise ratio (OSNR) monitoring is one of the core tasks of advanced optical
performance monitoring (OPM) technology, which plays an essential role in future intelligent …

Optical parameter estimation based on the data obtained by coherent optical receivers is
critical for optical performance monitoring (OPM) and the stable operation of the receiver …

Clock recovery plays an important role in the digital signal processing (DSP) chain of
modern coherent optical receivers. It references the local sampling clock with the signal …

We propose an efficient and modulation-format-transparent method to jointly estimate optical
signal-to-noise ratio (OSNR) and frequency offset (FO) by using signal spectrum correlations …