Turbulence-resilient pilot-assisted self-coherent free-space optical communications using automatic optoelectronic mixing of many modes

R Zhang, N Hu, H Zhou, K Zou, X Su, Y Zhou… - Nature …, 2021 - nature.com
In free-space optical communications that use both amplitude and phase data modulation
(for example, in quadrature amplitude modulation (QAM)), the data are typically recovered …

Carrier-assisted differential detection

W Shieh, C Sun, H Ji - Light: Science & Applications, 2020 - nature.com
To overcome power fading induced by chromatic dispersion in optical fiber communications,
optical field recovery is a promising solution for direct detection short-reach applications …

Dual polarization full-field signal waveform reconstruction using intensity only measurements for coherent communications

H Chen, NK Fontaine, JM Gene, R Ryf… - Journal of Lightwave …, 2020 - ieeexplore.ieee.org
Conventional optical coherent receivers capture the full electrical field, including amplitude
and phase, of a signal waveform by measuring its interference against a stable continuous …

Linearization of direct detection optical channels using self-coherent subsystems

D Che, Q Hu, W Shieh - Journal of Lightwave Technology, 2015 - ieeexplore.ieee.org
Intensity modulation with direct detection (IM-DD) dominates the commercial short-reach
optical communications. However, when upgrading the data-rate distance product to 1000 …

Asymmetric self-coherent detection

X Li, M O'Sullivan, Z Xing, MS Alam… - Optics …, 2021 - opg.optica.org
The bandwidth upgrade required in short-reach optical communications has prompted the
need for detection schemes that combine field reconstruction with a cost-effective subsystem …

Decision-aided carrier phase estimation for coherent optical communications

S Zhang, PY Kam, C Yu, J Chen - Journal of lightwave technology, 2010 - opg.optica.org
We analytically studied the block length effect (BLE) of decision-aided maximum likelihood
(DA ML) carrier phase estimation in coherent optical phase-modulated systems. The results …

Experimental demonstration of complex-valued DSB signal field recovery via direct detection

C Sun, T Ji, H Ji, Z Xu, W Shieh - IEEE Photonics Technology …, 2020 - ieeexplore.ieee.org
The recent decade has witnessed the evolution and enormous demand of the high-capacity
data center interconnect (DCI), in such application scenarios spectral efficiency, optical field …

Four-dimensional direct detection receiver enabling Jones-space field recovery with phase and polarization diversity

Q Wu, Y Zhu, X Li, H Jiang, C Cheng, M Fu… - Photonics …, 2024 - opg.optica.org
Data centers, the engines of the global Internet, rely on powerful high-speed optical
interconnects. In optical fiber communication, classic direct detection captures only the …

Spectrally Efficient Integrated Silicon Photonic Phase‐Diverse DD Receiver with Near‐Ideal Phase Response for C‐Band DWDM Transmission

J Zhang, X Li, Y Hu, MS Alam… - Laser & Photonics …, 2024 - Wiley Online Library
In this paper, a spectrally efficient silicon photonics phase‐diverse direct‐detection receiver
based on asymmetric self‐coherent detection is proposed. The receiver is hardware efficient …

Asymmetric self-coherent detection based on Mach-Zehnder interferometers

X Li, M O'Sullivan, Z Xing… - Journal of Lightwave …, 2021 - ieeexplore.ieee.org
We propose an asymmetric self-coherent detection scheme (ASCD) based on Mach-
Zehnder interferometers (MZI) for the field reconstruction of self-coherent (SC) complex …