Distributed Nonlinearity Compensation of Dual-Polarization Signals Using Optoelectronics

We propose an optoelectronic method for the distributed compensation of nonlinear fiber distortions affecting polarization multiplexed signals. This method involves placing devices we call total-intensity-directed phase modulators at the start of each amplified fiber span, in order to compensate the...

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Bibliographic Details
Published in:IEEE photonics technology letters 2016-10, Vol.28 (20), p.2141-2144
Main Authors: Foo, Benjamin, Corcoran, Bill, Chen Zhu, Lowery, Arthur J.
Format: Article
Language:English
Subjects:
Channels
Compensation
Computer simulation
Delays
Fiber nonlinearity compensation
Fibers
Mathematical models
Multiplexing
Nonlinearity
Optical fiber amplifiers
Optical fiber communication
Optical fiber dispersion
Optical fiber polarization
optical Kerr effect
Optical polarization
Optoelectronics
polarization-division multiplexing (PDM)
Wavelength division multiplexing
wavelength-division multiplexing (WDM)
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Summary:We propose an optoelectronic method for the distributed compensation of nonlinear fiber distortions affecting polarization multiplexed signals. This method involves placing devices we call total-intensity-directed phase modulators at the start of each amplified fiber span, in order to compensate the effect of fiber nonlinearity on a span-by-span basis. Numerical simulations are used to compare our proposed method with the well-known digital back propagation (DBP) algorithm for a wavelength division multiplexed system consisting of eight dual-polarization 16QAM channels operating at 28 GBd transmitted through a 15 × 100 km dispersion unmanaged link. These simulations show that the proposed distributed nonlinearity compensation technique increases the peak signal quality, Q, by 1 dB while DBP only increases peak Q by 0.5 dB.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2016.2584105