Observation of superluminal and slow light propagation in erbium-doped optical fiber

Schweinsberg, Aaron; Lepeshkin, Nick N.; Bigelow, Matthew S.; Boyd, Robert W.; Jarabo, Sebastián

doi:10.1209/epl/i2005-10371-0

Cited by 179 publications

(102 citation statements)

References 21 publications

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“…The delay is controlled by changing the power of the 980 nm pump light [Schweinsberg et al]. Modifi cation of the group velocity by CPOs has also been observed in erbium-doped optical materials and in semiconductor structures (see Baldit et al, 2005;Schweinsberg et al, 2006;and Zhao et al, 2005). Some results showing slow-and fast-light eff ects in an erbium-doped optical fi ber are shown in the fi gure below.…”

Section: Coherent Population Oscillationsmentioning

confidence: 99%

Applications of Slow Light in Telecommunications

Boyd¹,

Gauthier²,

Gaeta³

2006

Optics & Photonics News

219

104

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Section: Coherent Population Oscillationsmentioning

confidence: 99%

Applications of Slow Light in Telecommunications

Boyd¹,

Gauthier²,

Gaeta³

2006

Optics & Photonics News

219

104

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“…In particular, the simple hole-burning model [11] fails to predict the appearance of saturation dips if the transition under consideration is only homogenously broadened [19]. Such dips are, however, described theoretically [19][20][21][22] and detected experimentally in a number of systems, including p-type semiconductors [23], semiconductor quantum wells [24], ruby crystals [25], Sm+2:CaF2 crystals [23], erbium-doped optical fibers [27], and atomic vapors in room [28][29][30] and sub-mK temperature [31]. The phenomenon of CPO plays an important role in nonlinear spectroscopy [11,[20][21][22]32] and wavemixing experiments [33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Coherent population oscillations with nitrogen-vacancy color centers in diamond

et al. 2016

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We present results of our research on two-field (two-frequency) microwave spectroscopy in nitrogenvacancy (NV -) color centers in a diamond. Both fields are tuned to transitions between the spin sublevels of the NV -ensemble in the 3 A 2 ground state (one field has a fixed frequency while the second one is scanned). Particular attention is focused on the case where two microwaves fields drive the same transition between two NV -ground state sublevels (m s =0  m s =+1). In this case, the observed spectra exhibit a complex narrow structure composed of three Lorentzian resonances positioned at the pump-field frequency. The resonance widths and amplitudes depend on the lifetimes of the levels involved in the transition. We attribute the spectra to coherent population oscillations induced by the two nearly degenerate microwave fields, which we have also observed in real time. The observations agree well with a theoretical model and can be useful for investigation of the NV relaxation mechanisms.

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“…The first technique exploits the coherent population oscillation in a fibre doped with erbium ions, where a very narrow resonance is created with a bandwidth essentially determined by the erbium lifetime (around 10 ms) 28 . Large delays up to a fraction of a millisecond can be obtained, but with only a moderate bandwidth in the kilohertz range.…”

Section: Special-fibre Approachesmentioning

confidence: 99%

Slow and fast light in optical fibres

2008

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The ubiquitous role of optical fibres in modern photonic systems has stimulated research to realize slow and fast light devices directly in this close-to-perfect transmission line. Recent progress in developing optically controlled delays in optical fibres, operating under normal environmental conditions and at telecommunication wavelengths, has paved the way towards real applications for slow and fast light. This review presents the state-of-the-art research in this fascinating field and possible outcomes in the near future. The development of high-quality silica optical fibres with excellent transmission capabilities has directly contributed to the tremendous expansion of the global communication network. The success is due to their unrivalled low-loss performance (typically 50% of light is still present after a 15-km transmission distance), their wide bandwidth, which allows terabits per second of information to be transmitted over more than 1,000 km, and also their extremely low production cost. Realizing tunable delays for optical data signals directly in fibres, as well as integrating such devices into existing communication networks, is certainly a very attractive approach for optimizing the flow of data traffic in future networks. The approach may also enhance the capabilities of optical and microwave-on-optical-carrier signal processing. Given the limited possibilities for engineering the dispersion curve of standard single-mode fibres without creating complex photonic-crystal structures (see pages 448 and 465 of this issue 1,2 ), much research on fibre-based delays has been directed towards solutions based on spectral resonances to generate slow and fast light. The initial pioneering demonstrations of slow and fast light in various media all exploited narrow spectral resonances, typically created by electromagnetically induced transparency 3 or coherent population oscillation 4 . Narrow spectral resonances have a dramatic effect on optical propagation, as any sharp spectral change in the medium's transmission curve results in a steep quasi-linear variation of the effective refractive index with wavelength in the narrow spectral region near the resonance. This in turn results in a strong change in the group velocity at the exact centre of the resonance 5 . The velocity change is strongest for narrower spectral resonances (as explained in detail below) and for this reason, the early experiments were all carried out in special media, such as ultracold atomic gases or atomic transitions in a crystalline solid at a well-defined wavelength. Luc ThévenazWithin the resonance, the relationship between the change in the optical transmission and the delay can be determined as follows. The refractive-index change, Δn, as a function of the optical frequency, ν, is calculated using the Kramers-Kronig transformation, and the index change associated with the group velocity, Δn g , is then found using the relationship Δn g = Δn + ν(dΔn/dν) (ref. 5). Finally, the delay, ΔT, added to the normal transit time in the medium...

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Observation of superluminal and slow light propagation in erbium-doped optical fiber

Cited by 179 publications

References 21 publications

Applications of Slow Light in Telecommunications

Applications of Slow Light in Telecommunications

Coherent population oscillations with nitrogen-vacancy color centers in diamond

Slow and fast light in optical fibres

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