High-order modulation formats with high symbol rates are promising candidates for meeting
the growing traffic requirements of digital coherent transmission. In using these modulation …

The coherent digital subcarrier multiplexing (DSCM) has recently been proposed as a cost
saving solution to realize flexible and scalable point-to-multipoint (PTMP) networks. In this …

Impact of Laser Impairments on DSCM-Based 800G Point-to-MultiPoint Coherent
Transmission Systems Page 1 Impact of Laser Impairments on DSCM-Based 800G Point-to-MultiPoint …

Recently, data-driven fiber channel modeling methods based on deep learning have been
proposed in optical communication system simulations. We investigate a new data-driven …

We propose and implement a tunable, high power and narrow linewidth laser source based
on a series of highly coherent tones from an electro-optic frequency comb and a set of 3 DFB …

The fundamental penalty of subcarrier modulation (SCM) with independent subcarrier phase
noise processing is estimated. It is shown that the fundamental signal-to-noise ratio (SNR) …

Replacing a large number of individual lasers with frequency comb in coherent optical
communication systems is a current research focus, which has great potential in realizing …

Carrierphase recovery (CPR) is a key digital signal processing (DSP) subsystem in optical
fiber communications. In this paper, we review recent advances in CPR algorithms and …

Laser phase noise (LPN) is one of the most severe impairments for the digital subcarrier
multiplexing (DSM) transmissions with advanced modulation formats. In particular, it …

In this study, we propose a non-data-aided algorithm of the cycle slip self-correcting carrier
phase estimation (CSSC-CPE) which mitigates the cycle slips caused by blind CPE in the …