Optical transmission links are generally composed of optical fibers, optical amplifiers, and
optical filters. In this paper, we present a channel reconstruction method (CRM) that extracts …

This paper presents analytical results on longitudinal power profile estimation (PPE)
methods, which visualize signal power evolution in optical fibers at a coherent receiver. The …

This tutorial discusses the design and ASIC implementation of coherent optical transceivers.
Algorithmic and architectural options and tradeoffs between performance and …

We report the transmission of time domain hybrid QAM (TDHQ) signals for agile optical
networks. A continuous tradeoff between spectral efficiency and achievable distance by …

Increased global traffic puts tough requirements not just on fiber communications links but
on the entire network. This manifests itself in multiple ways, including how to optimize …

A novel time domain multiplexed (TDM) spatial division multiplexing (SDM) receiver which
allows for the reception of> 1 dual polarization mode with a single coherent receiver, and …

We experimentally demonstrate the use of data-aided digital signal processing for format-
flexible coherent reception of different 28-GBd PDM and 4D modulated signals in WDM …

We propose a chromatic dispersion (CD) estimation technique by using the auto-correlation
of signal power waveform for DSP based coherent systems. For single-carrier polarization …

Advanced DSP Techniques Enabling High Spectral Efficiency and Flexible Transmissions:
Toward elastic optical networks Page 1 IEEE SIGNAL PROCESSING MAGAZINE [82] MARCh …

The architecture of a single-chip dual-polarization QPSK/BPSK 50 Gigabits per second
(Gb/s) DSP-based transceiver for coherent optical communications is presented. The …