Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Chinese Journal of Lasers

Superluminal and Slow Light of High-Bit Rate Modulation Signals Based on Light Filtering

王甫 Wang Fu, 何志坚 He Zhijian

Published Jan 1, 2018• 0 citations
Publisher
DOI
10.3788/cjl201845.1006006

Related papers

Slow light for nonlinear optical signal processing

David Moss

•Jan 1, 2014•0 citations

Delay of Broadband Signals Using Slow Light in Stimulated Brillouin Scattering With Phase-Modulated Pump

Lilin Yi, Li Zhan, Weisheng Hu +1 more

Slow light due to stimulated Brillouin scattering in fibers is a promising technique to realize all-optical data storage and synchronization. For delaying high-speed data, we demonstrate an approach to solve the problem of narrowband Brillouin gain by phase-modulating the Brillouin pump. The bit rate of the phase-modulating signal determines the Brillouin gain bandwidth. A 1.25-Gb/s nonreturn-to-zero pseudorandom binary sequence data is delayed by 520 ps with a phase-modulated pump operating at 2.5-Gb/s bit rate. We have also observed the pattern-dependent delay and distortion of the data caused by the filtering characteristics of Brillouin amplification, and we have suppressed the distortion by detuning the carrier of the signal away from the Brillouin gain peak

IEEE Photonics Technology Letters•Jan 1, 2007•46 citations

Tunable delay lines using slow light for Gbit/s data signal

Alan Eli Willner, Bo Zhang

Optical tunable delay lines have many applications for high-performance optical switching and signal processing. Slowlight has emerged as an enabling technology for achieving continuously tunable optical delays. The reconfigurable delay opens up a whole new field of nonlinear signal processing using slow light. In this paper, we review recent advances in slow-light-based optical signal processing, with a focus on the data fidelity after traversing the slow light elements. The concept of slow-light-induced data-pattern dependence is introduced and is shown to be the main signal degrading effect. We then propose and experimentally demonstrate phase-preserving slow light by delaying 10-Gb/s differential-phaseshift- keying (DPSK) signals with reduced DPSK data pattern dependence. Spectrally-efficient slow light using advanced multi-level phase-modulated format is further described. With this technique, doubled or even tripled bit-rate signals can be transmitted through a bandwidth limited slow light element. We finally show several novel slow-light-based signal processing modules. Unique features such as multi-channel operation and variable bit-rate capability are highlighted.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Jan 10, 2008•2 citations

SIGNAL VELOCITY OF SUPERLUMINAL LIGHT PULSES

L. J. WANG

Solvay Conference on Physics•Aug 1, 2003•0 citations

Optical Signal Processing Using Tunable Delay Elements Based on Slow Light

Alan Eli Willner, Bo Zhang, Lin Zhang +2 more

Tunable optical delay lines have many applications for high-performance optical switching and signal processing. Slow light has emerged as an enabling technology for achieving continuously tunable optical delays. Delay reconfigurability opens up a whole new field of nonlinear signal processing using slow light. In this paper, the authors review recent advances in slow-light-based optical signal processing, with a focus on the data fidelity after traversing the slow light elements. The concept of slow-light-induced data pattern dependence is introduced and is shown to be the main signal degrading effect. We then propose and experimentally demonstrate phase-preserving slow light by delaying 10 Gb/s differential phase-shift keying (DPSK) signals with reduced DPSK pattern dependence. Spectrally efficient slow light using advanced multilevel phase-modulated formats is further described. With this technique, doubled bit-rate signals can be transmitted through a bandwidth-limited slow light element. We finally show several novel slow-light-based signal processing modules. Unique features such as multichannel operation, variable bit-rate capability, and simultaneous multiple functions are highlighted.

IEEE Journal of Selected Topics in Quantum Electronics•Jan 1, 2008•102 citations

Linear and nonlinear phenomena for slow light

Hamid Reza Hamedi

•Jan 1, 2017•0 citations
Slow light due to stimulated Brillouin scattering in fibers is a promising technique to realize all-optical data storage and synchronization. For delaying high-speed data, we demonstrate an approach to solve the problem of narrowband Brillouin gain by phase-modulating the Brillouin pump. The bit rate of the phase-modulating signal determines the Brillouin gain bandwidth. A 1.25-Gb/s nonreturn-to-zero pseudorandom binary sequence data is delayed by 520 ps with a phase-modulated pump operating at 2.5-Gb/s bit rate. We have also observed the pattern-dependent delay and distortion of the data caused by the filtering characteristics of Brillouin amplification, and we have suppressed the distortion by detuning the carrier of the signal away from the Brillouin gain peak
Optical tunable delay lines have many applications for high-performance optical switching and signal processing. Slowlight has emerged as an enabling technology for achieving continuously tunable optical delays. The reconfigurable delay opens up a whole new field of nonlinear signal processing using slow light. In this paper, we review recent advances in slow-light-based optical signal processing, with a focus on the data fidelity after traversing the slow light elements. The concept of slow-light-induced data-pattern dependence is introduced and is shown to be the main signal degrading effect. We then propose and experimentally demonstrate phase-preserving slow light by delaying 10-Gb/s differential-phaseshift- keying (DPSK) signals with reduced DPSK data pattern dependence. Spectrally-efficient slow light using advanced multi-level phase-modulated format is further described. With this technique, doubled or even tripled bit-rate signals can be transmitted through a bandwidth limited slow light element. We finally show several novel slow-light-based signal processing modules. Unique features such as multi-channel operation and variable bit-rate capability are highlighted.
Tunable optical delay lines have many applications for high-performance optical switching and signal processing. Slow light has emerged as an enabling technology for achieving continuously tunable optical delays. Delay reconfigurability opens up a whole new field of nonlinear signal processing using slow light. In this paper, the authors review recent advances in slow-light-based optical signal processing, with a focus on the data fidelity after traversing the slow light elements. The concept of slow-light-induced data pattern dependence is introduced and is shown to be the main signal degrading effect. We then propose and experimentally demonstrate phase-preserving slow light by delaying 10 Gb/s differential phase-shift keying (DPSK) signals with reduced DPSK pattern dependence. Spectrally efficient slow light using advanced multilevel phase-modulated formats is further described. With this technique, doubled bit-rate signals can be transmitted through a bandwidth-limited slow light element. We finally show several novel slow-light-based signal processing modules. Unique features such as multichannel operation, variable bit-rate capability, and simultaneous multiple functions are highlighted.