Temporal spying and concealing process in fibre-optic data transmission systems through polarization bypass

Bony, Pierre-Yves; Guasoni, Massimiliano; Morin, P.; Sugny, Dominique; Picozzi, Antonio; Jauslin, H. R.; Pitois, Stéphane; Fatome, Julien

doi:10.1038/ncomms5678

Cited by 41 publications

(32 citation statements)

References 40 publications

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“…The basic principle of this device was initially proposed in ref. [12]. It is based on the nonlinear cross-polarization interaction in a standard optical fiber between a forward signal and its high-power counter-propagating replica, generated and amplified by a factor g at fiber end by means of a reflective loop setup.…”

Section: Discussionmentioning

confidence: 99%

“…We thus confirm the existence of an attraction regime that, as already observed in ref. [12], is characterized by an upper threshold g A here estimated by the relation g A =9π / (16•L•Ps(L)•). In this regime if a CW SOP s(0,t)=s(0) is injected in the fiber then the corresponding output SOP s(L,t) always converges in time towards a fixed point belonging to the LSOS, which is analogous to the attraction process experienced by S 1 (L,t) in Fig.2(a-c).…”

Section: Theoretical Modelingmentioning

confidence: 99%

See 1 more Smart Citation

Fast and Chaotic Fiber-Based Nonlinear Polarization Scrambler

Guasoni¹,

Bony²,

Gilles³

et al. 2016

IEEE J. Select. Topics Quantum Electron.

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International audienceWe report a simple and efficient all-optical polarization scrambler based on the nonlinear interaction in an optical fiber between a signal beam and its backward replica which is generated and amplified by a reflective loop. When the amplification factor exceeds a certain threshold, the system exhibits a chaotic regime in which the evolution of the output polarization state of the signal becomes temporally chaotic and scrambled all over the surface of the Poincaré sphere. We numerically derive some design rules for the scrambling performances of our device which are well confirmed by the experimental results. The polarization scrambler has been successfully tested on a 10-Gbit/s On/Off Keying Telecom signal, reaching scrambling speeds up to 500-krad/s, as well as in a wavelength division multiplexing configuration. A different configuration based on a following cascade of polarization scramblers is also discussed numerically, which leads to an increase of the scrambling performances

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Section: Discussionmentioning

confidence: 99%

Section: Theoretical Modelingmentioning

confidence: 99%

Fast and Chaotic Fiber-Based Nonlinear Polarization Scrambler

Guasoni¹,

Bony²,

Gilles³

et al. 2016

IEEE J. Select. Topics Quantum Electron.

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“…To this aim, several techniques have emerged in the literature in order to develop a nonlinear polarizer capable to repolarize an incident signal with 100% of efficiency, whilst preserving the quality of the temporal intensity profile. This phenomenon of polarization attraction in optical fibers or polarization pulling effect, has been the subject of numerous studies in the literature involving the Raman effect [35][36][37][38][39][40][41][42][43], the stimulated Brillouin backscattering [44][45][46][47][48][49], the parametric amplification [50][51][52] as well as a counter-propagating four-wave mixing process, also called nonlinear cross-polarization interaction [53][54][55][56][57][58][59][60][61][62][63][64][65][66][67][68]. For this last particular case, it has been shown that an arbitrarily polarized incident signal can be attracted toward a specific SOP, which is fixed by the polarization of the counter-propagating pump 2 wave injected at the opposite end of the fiber [55].…”

Section: Introductionmentioning

confidence: 99%

[INVITED] Self-induced polarization tracking, tunneling effect and modal attraction in optical fiber

Guasoni

Morin

Bony

et al. 2016

Optics & Laser Technology

Self Cite

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In this paper, we report the observation and exploitation of the capability of light to self-organize its state-of-polarization, upon propagation in optical fibers, by means of a device called Omnipolarizer. The principle of operation of this system consists in a counter-propagating four-wave mixing interaction between an incident signal and its backward replica generated at the fiber output thanks to a reflective fiber loop. We have exploited this self-induced polarization tracking phenomenon for all-optical data processing and successfully demonstrated the spontaneous repolarization of a 40-Gbit/s On-Off keying optical signal without noticeable impairments. Moreover, the strong local coupling between the two counter-propagating waves has also revealed a fascinating aspect of the Omnipolarizer called polarization-based tunneling effect. This intrinsic property enables us to instantaneously let "jump" a polarization information onto the reflected signal, long before the expected time-of-flight induced by the round-trip along the fiber span. Finally, we discuss how the concept of self-organization could be generalized to multimode fibers, which paves the way to new important applications in the framework of spatial-mode-multiplexing.respectively, whereas s=S/|S| and j=J/|J| denote the corresponding unitary Stokes vectors which define the SOPs over the unit radius Poincaré sphere. The spatiotemporal dynamics of S and J in the fiber is ruled by the following coupled nonlinear partial differential equations [66]: J S J J J S J S S S α c α c z t z t

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“…In resent years, temporal cloak has been widely studied both theoretically and experimentally [1][2][3][4][5][6][7][8][9][10]. It is an analogy with spatial cloak [11] from the space-time duality associated with diffraction and dispersion [12,13].…”

Section: Introductionmentioning

confidence: 99%

Tunable temporal gap based on simultaneous fast and slow light in electro-optic photonic crystals

Li¹,

Chen²,

Jiang³

et al. 2015

Opt. Express

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We demonstrated a tunable temporal gap based on simultaneous fast and slow light in electro-optic photonic crystals. The light experiences an anomalous dispersion near the transmission center and a normal dispersion away from the center, where it can be accelerated and slowed down, respectively. We also obtained the switch between fast and slow light by adjusting the external electric filed. The observed largest temporal gap is 541 ps, which is crucial in practical event operation inside the gap. The results offer a new solution for temporal cloak.

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Temporal spying and concealing process in fibre-optic data transmission systems through polarization bypass

Cited by 41 publications

References 40 publications

Fast and Chaotic Fiber-Based Nonlinear Polarization Scrambler

Fast and Chaotic Fiber-Based Nonlinear Polarization Scrambler

[INVITED] Self-induced polarization tracking, tunneling effect and modal attraction in optical fiber

Tunable temporal gap based on simultaneous fast and slow light in electro-optic photonic crystals

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