Key technologies in chaotic optical communications

doi:10.1007/s12200-016-0570-y

Front. Optoelectron.

2016, Vol. 9

Issue (3) : 508-517 https://doi.org/10.1007/s12200-016-0570-y

REVIEW ARTICLE

Key technologies in chaotic optical communications

Junxiang KE,Lilin YI(

),Tongtong HOU,Weisheng HU

The State Key Lab of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

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Abstract

In this paper, the key technologies and research progress of chaotic optical communication are reviewed. We first discuss the chaos generation methods based on different nonlinear components. Then we focus on the frontiers of chaotic optical communications, including how to improve the security, and the development about the transmission capacity and distance of chaotic optical communication in laboratory and field. At last, we discuss limitations and potentials of chaotic optical communications and draw a conclusion.

Keywords chaos chaotic optical communications security capacity time delay concealment

Corresponding Author(s): Lilin YI

Just Accepted Date: 03 August 2016 Online First Date: 06 September 2016 Issue Date: 28 September 2016

Cite this article:

Junxiang KE,Lilin YI,Tongtong HOU, et al. Key technologies in chaotic optical communications[J]. Front. Optoelectron., 2016, 9(3): 508-517.

URL:

https://academic.hep.com.cn/foe/EN/10.1007/s12200-016-0570-y
https://academic.hep.com.cn/foe/EN/Y2016/V9/I3/508

Fig.1 Schematic of chaos generation induced by semiconductor lasers. (a) Optical feedback; (b) optical injection; (c) optoelectronic feedback (Ref. [11])

Fig.2 Schematic of chaos induced by Mach-Zehnder modulator (MZM) (Ref. [13]). SC: semiconductor; MZM: Mach-Zehnder modulator; RF: radio frequency; PD: photodetector

Fig.3 Schematic of chaos induced by quadrature phase-shift-keying (QPSK) electro-optic modulator (Ref. [14]). LD: laser diode; QPSK-M: quatrature phase-shift-keying modulator; RF: radio frequency; amp: amplifier; SMF: single mode fiber; Att: attenuator; OC: optical coupler; PD: photodiode

Fig.4 Phase chaos emitter setup (Ref. [11]). SL: semiconductor laser; PM: phase modulator; RF: radio frequency; PD: photodiode; MZI: Mach-Zehnder interferometer

Fig.5 Time delay concealment in autocorrelation function and mutual information (Ref. [10])

Fig.6 Schematic of semiconductor ring lasers with cross-feedback (Ref. [18]). CW: clockwise mode; CCW: counter-clockwise mode; SRL: semiconductor ring lasers

Fig.7 A new scheme of time delay concealment [19]. LD: laser diode; PD: photodiode; OSC: oscilloscope; OA: optical attenuator; TDC: tunable dispersion compensator

Fig.8 Results of time delay concealment in auto correlation (a) and power spectrum (b) with different dispersion values (Ref. [19])

Fig.9 Cascaded all-optical chaos and electro-optic phase-chaos systems for time delay concealment (Ref. [20]). PM: phase modulator; MZI: Mach-Zehnder interferometer; RF: radio frequency; PD: photodiode

Fig.10 Schematic of digital key introduction into phase chaos generator in serial configuration for time delay concealment (Ref. [21]). SL: semiconductor laser; PM: phase modulator; MZI: Mach-Zehnder interferometer; RF: radio frequency; PD: photodiode

Fig.11 Schematic of digital key introduced into phase chaos generator in parallel configuration for time delay concealment (Ref. [22]). SL: semiconductor laser; PM: phase modulator; MZI: Mach-Zehnder interferometer; RF: radio frequency; PD: photodiode

Fig.12 Schematic of (a) electro-optical feedback; (b) the schematic of all-optical feedback; (c) eye diagrams in the electro-optic set-up, (d) field experiment of fiber transmission (Ref. [5]). LD: laser diode; MZ: Mach-Zehnder modulator; OI: optical isolator; EDFA: erbium-doped fiber amplifier; DL: delay line; AMP: amplifier; OC: optical coupler; PD: photodiode; IPD: inverse photodiode; PC: polarization controller; R: reflector; MOD: modulator

Fig.13 Field demonstration of phase chaos based optical communications operated at 10 Gb/s bit rate (Ref. [6]). LD: laser diode; PM: phase modulator; OC: optical coupler; Amp: amplifier; PD: photodiode; DL: delay line; OA: optical attenuator; DPSK: differential phase-shifted-keying; SMF: single mode fiber; DCM: dispersion compensation module; EDFA: erbium-doped fiber amplifier; VDL: variable delay line; PC: polarization controller

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