Recent advances in coherent optical communication

Li, Guifang

doi:10.1364/aop.1.000279

Cited by 255 publications

(113 citation statements)

References 45 publications

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“…First, in the opaque run, we had two links of 50 km (links 10 and 13) with 2 out of 14 channels disapproved. Considering the nonlinear length for a multichannel system, given by [23] ,…”

Section: Resultsmentioning

confidence: 99%

“…At the receiver, a DSP module performs chromatic dispersion compensation using Finite Impulse Response (FIR) filters [23]. The signal is sampled every seconds and recovered with tap weights given by [24] ,…”

Section: Coherent Systemsmentioning

confidence: 99%

“…The carrier phase estimation (Viberti and Viberti (V&V) [27]), which is the last compensation module used in our simulations, is used to retrieve and subsequently remove the remaining phase mismatch, , between the local oscillator and the signal [23]. The estimation of the inconsistency is made in the central sample only, using the following algorithm: first, the m-th power of the complex symbol is considered for the purpose of removing any encoded information in the signal phase (m being the amount of phase modulation levels, 4 in the QPSK case).…”

Section: Coherent Systemsmentioning

confidence: 99%

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A Multilayer Approach for Optical Network Planning

Coutinho

Lima

et al. 2016

J. Microw. Optoelectron. Electromagn. Appl.

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Abstract-With the increase in demand to Backbone networks, one became fundamental the application of new telecommunication technologies for efficient use of devices and optical links, such as xPSK modulations with dual polarization, dispersion compensating fibers, coherent detection and digital processing signals. Thus, network planning using analytical models have been proposed in the last years for this purpose. In this paper we propose the use of numerical simulations in wavelength-division multiplexing networks planning via a novel iterative method with highperformance processing, which does an analysis of the quality of transmission in transparent networks.

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“…First, in the opaque run, we had two links of 50 km (links 10 and 13) with 2 out of 14 channels disapproved. Considering the nonlinear length for a multichannel system, given by [23] ,…”

Section: Resultsmentioning

confidence: 99%

Section: Coherent Systemsmentioning

confidence: 99%

Section: Coherent Systemsmentioning

confidence: 99%

See 1 more Smart Citation

A Multilayer Approach for Optical Network Planning

Coutinho

Lima

et al. 2016

J. Microw. Optoelectron. Electromagn. Appl.

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“…29 However, such properties are only used for signal demodulation and do not involve dense coding. 29 To the best of our knowledge, the present work provides a novel demonstration of the realization of dense coding in classical optical communication, which is an analogy of quantum dense coding using pairs of photons entangled in polarization. Such a phenomenon originates from the EPR-type classical optical correlation that has been completed using the interferometer at Alice's analyzer.…”

Section: Aip Advances 6 065008 (2016)mentioning

confidence: 99%

Experimental realization of the analogy of quantum dense coding in classical optics

Yang

Sun

et al. 2016

AIP Advances

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We report on the experimental realization of the analogy of quantum dense coding in classical optical communication using classical optical correlations. Compared to quantum dense coding that uses pairs of photons entangled in polarization, we find that the proposed design exhibits many advantages. Considering that it is convenient to realize in optical communication, the attainable channel capacity in the experiment for dense coding can reach 2 bits, which is higher than that of the usual quantum coding capacity (1.585 bits). This increased channel capacity has been proven experimentally by transmitting ASCII characters in 12 quaternary digitals instead of the usual 24 bits.

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“…Direct detection has superior photon efficiency (bits/photon) [4], so it is the preferred choice for photon-starved applications like the lunar laser communication demonstration [5]. Homodyne and heterodyne detection, however, offer better spectral efficiency [(bits/s)/Hz] [6], thus they are being pursued to maximize throughput in the Internet's fiber backbone.…”

Section: Introductionmentioning

confidence: 99%

Ultimate capacity of a linear time-invariant bosonic channel

Bardhan

Shapiro

2016

Phys. Rev. A

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We determine the ultimate classical information capacity of a linear time-invariant bosonic channel with additive phase-insensitive Gaussian noise. This channel can model fiber-optic communication at power levels below the threshold for significant nonlinear effects. We provide a general continuous-time result that gives the ultimate capacity for such a channel operating in the quasimonochromatic regime under an average power constraint. This ultimate capacity is compared with corresponding results for heterodyne and homodyne detection over the same channel.

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Recent advances in coherent optical communication

Cited by 255 publications

References 45 publications

A Multilayer Approach for Optical Network Planning

A Multilayer Approach for Optical Network Planning

Experimental realization of the analogy of quantum dense coding in classical optics

Ultimate capacity of a linear time-invariant bosonic channel

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