Coherent detection in optical fiber systems

E Ip, APT Lau, DJF Barros, JM Kahn - Optics express, 2008 - opg.optica.org
The drive for higher performance in optical fiber systems has renewed interest in coherent
detection. We review detection methods, including noncoherent, differentially coherent, and …

Optical orthogonal division multiplexing for long haul optical communications: A review of the first five years

AJ Lowery, LB Du - Optical Fiber Technology, 2011 - Elsevier
Optical OFDM was proposed for dispersion compensation in long-haul optical
communications systems in 2006 in two forms, one using direct-detection and the other …

Intra-symbol frequency-domain averaging based channel estimation for coherent optical OFDM

X Liu, F Buchali - Optics express, 2008 - opg.optica.org
We present an efficient channel estimation method for coherent optical OFDM (CO-OFDM)
based on intra-symbol frequency-domain averaging (ISFA), and systematically study its …

Closed-form expressions for nonlinear transmission performance of densely spaced coherent optical OFDM systems

X Chen, W Shieh - Optics express, 2010 - opg.optica.org
There has been a trend of migration to high spectral efficiency transmission in optical fiber
communications for which the frequency guard band between neighboring wavelength …

OFDM for flexible high-speed optical networks

W Shieh - Journal of lightwave technology, 2011 - ieeexplore.ieee.org
Fast advancing silicon technology underpinned by Moore's law is creating a major
transformation in optical fiber communications. The recent upsurge of interests in optical …

Phased-array cancellation of nonlinear FWM in coherent OFDM dispersive multi-span links

M Nazarathy, J Khurgin, R Weidenfeld, Y Meiman… - Optics express, 2008 - opg.optica.org
We develop an analytic model of Coherent Optical Orthogonal Frequency Division
Multiplexing (OFDM) propagation and detection over multi-span long-haul fiber links …

Improving the nonlinear tolerance of polarization-division-multiplexed CO-OFDM in long-haul fiber transmission

X Liu, F Buchali, RW Tkach - Journal of lightwave technology, 2009 - ieeexplore.ieee.org
We present digital signal processing techniques and algorithms for improving the tolerance
of polarization-division multiplexed (PDM) coherent optical orthogonal frequency-division …

Transformer-based long distance fiber channel modeling for optical OFDM systems

N Zhang, H Yang, Z Niu, L Zheng… - Journal of Lightwave …, 2022 - ieeexplore.ieee.org
The fiber channel model plays an essential role in the simulation and design of optical fiber
communication systems. However, it is difficult for conventional model-driven modeling to …

Multi-band OFDM transmission at 100 Gbps with sub-band optical switching

E Pincemin, M Song, J Karaki… - Journal of lightwave …, 2014 - opg.optica.org
In this paper, we present an original work on sub-wavelength optical switching performed
over a coherent multi-band orthogonal frequency-division multiplexing (MB-OFDM) super …

Fiber nonlinearity compensation for OFDM super-channels using optical phase conjugation

LB Du, MM Morshed, AJ Lowery - Optics express, 2012 - opg.optica.org
We experimentally demonstrate that mid-link optical phase conjugation (OPC) effectively
compensates fiber nonlinearity in coherent optical OFDM super-channels. The OPC was …