Tunable optical delays based on Brillouin dynamic grating in optical fibers

Song, Kwang Yong; Lee, Kwanil; Lee, Sang Bae

doi:10.1364/oe.17.010344

Cited by 74 publications

(41 citation statements)

References 15 publications

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“…The proposed method is experimentally demonstrated in the localization of dynamic SBS gratings in polarization maintaining (PM) fibers [13][14][15][16][17][18][19][20][21][22][23][24][25]. Dynamic gratings are introduced by two counter-propagating pump waves, separated in frequency by Ω B and co-polarized along one principal axis of the PM fiber.…”

Section: Introductionmentioning

confidence: 99%

“…Dynamic gratings therefore add another dimension to B-OTDA sensing [14-17, 19-21, 24]: a change in strain or temperature modifies the readout probe frequency of maximum reflection, as well as the value of Ω B . In addition, dynamic gratings may provide 'movable mirrors', thereby introducing a new potential platform for all-optical variable group delay [18,25]. Dynamic gratings-based delay could be free of the delay-bandwidth product limitations that undermine the performance of so-called SBS slow-light systems [26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

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Localized and stationary dynamic gratings via stimulated Brillouin scattering with phase modulated pumps

Antman¹,

Primerov²,

Sancho³

et al. 2012

Opt. Express

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A novel technique for the localization of stimulated Brillouin scattering (SBS) interaction is proposed, analyzed and demonstrated experimentally. The method relies on the phase modulation of two counterpropagating optical waves by a common pseudo-random bit sequence (PRBS), these waves being spectrally detuned by the Brillouin frequency shift. The PRBS symbol duration is much shorter than the acoustic lifetime. The interference between the two modulated waves gives rise to an acoustic grating that is confined to narrow correlation peaks, as short as 1.7 cm. The separation between neighboring peaks, which is governed by the PRBS length, can be made arbitrarily long. The method is demonstrated in the generation and applications of dynamic gratings in polarization maintaining (PM) fibers. Localized and stationary acoustic gratings are induced by two phase modulated pumps that are polarized along one principal axis of the PM fiber, and interrogated by a third, readout wave which is polarized along the orthogonal axis. Using the proposed technique, we demonstrate the variable delay of 1 ns-long readout pulses by as much as 770 ns. Noise due to reflections from residual off-peak gratings and its implications on the potential variable delay of optical communication data are discussed. The method is equally applicable to the modulation of pump and probe waves in SBS over standard fibers. ©2012 Optical Society of America References and links1. R. W. Boyd, Nonlinear Optics, 3rd edition, (Academic Press, 2008). 2. T. Kurashima, T. Horiguchi, and M. Tateda, "Distributed-temperature sensing using stimulated Brillouin scattering in optical silica fibers," Opt. Lett. 15(18), 1038-1040 (1990). 3. T. Horiguchi, T. Kurashima, and M. Tateda, "A technique to measure distributed strain in optical fibers," IEEE Photon. Technol. Lett. 2(5), 352-354 (1990). 4. X. Bao, D. J. Webb, and D. A. Jackson, "22-km distributed temperature sensor using Brillouin gain in an optical fiber," Opt. Lett. 18(7), 552-554 (1993). 5. M. Niklès, L. Thévenaz, and P. A. Robert, "Simple distributed fiber sensor based on Brillouin gain spectrum analysis," Opt. Lett. 21(10), 758-760 (1996). 6. T. Horiguchi and M. Tateda, "Optical-fiber-attenuation investigation using stimulated Brillouin scattering between a pulse and a continuous wave," Opt. Lett. 14(8), 408-410 (1989). 7. A. Fellay, L. Thevenaz, M. Facchini, M. Nikles, and P. Robert, "Distributing sensing using stimulated Brillouin scattering: Toward ultimate resolution," in

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Localized and stationary dynamic gratings via stimulated Brillouin scattering with phase modulated pumps

Antman¹,

Primerov²,

Sancho³

et al. 2012

Opt. Express

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“…This gradual decrease of the Brillouin frequency probably results from a compressive strain, possibly resulting from the cooling of the heat shrunk protection. In a previous study, the Brillouin frequency dependence on strain was experimentally evaluated, resulting in the value of 0.05 MHz [5], [20]. So, we can estimate that the residual stress induced by the heat shrunk protection might be of the order of 200 .…”

Section: Experimental Layout and Resultsmentioning

confidence: 95%

Sub-Centimeter Spatial Resolution in Distributed Fiber Sensing Based on Dynamic Brillouin Grating in Optical Fibers

2012

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Abstract-Optical fiber sensors based on stimulated Brillouin scattering in optical fibers have now clearly demonstrated their excellent capability for long-range distributed strain and temperature measurements. The fiber is used as sensing element and a value for temperature and/or strain can be obtained from any point along the fiber. While the spatial resolution of classical configurations is practically limited to 1 meter by the phonon lifetime, novel approaches have been demonstrated these past years that can overcome this limit. In this paper, this could be achieved by two physical processes: prior activation of a steady acoustic wave through the classical Brillouin interaction between two Brillouin pumps, and interrogation by Bragg reflection on the acoustic wave using a distinct ultra-short pulse in a highly birefringent fiber. We could achieve a spatial resolution below one centimeter, while preserving the full accuracy on the determination of temperature and strain.

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“…Dynamic Brillouin gratings are introduced by two pump waves, which are co-polarized along one principal axis of a polarization maintaining (PM) fiber [1][2][3][4][5][6][7]. The stimulated Brillouin scattering (SBS) interaction between the pumps, which are spectrally detuned by the Brillouin shift Ω B in the fiber, generates a traveling acoustic wave which is accompanied by refractive index variations.…”

Section: Introductionmentioning

confidence: 99%

“…Dynamic gratings therefore add another dimension to SBS-based distributed sensing [2,4]. In addition, dynamic gratings may provide 'movable mirrors', thereby introducing a new potential platform for all-optical variable group delay [5,6].…”

Section: Introductionmentioning

confidence: 99%

Long Variable Delay and Distributed Sensing Using Stationary and Localized Brillouin Dynamic Gratings

Antman

Primerov

Sancho

et al. 2012

National Fiber Optic Engineers Conference

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Tunable optical delays based on Brillouin dynamic grating in optical fibers

Cited by 74 publications

References 15 publications

Localized and stationary dynamic gratings via stimulated Brillouin scattering with phase modulated pumps

Localized and stationary dynamic gratings via stimulated Brillouin scattering with phase modulated pumps

Sub-Centimeter Spatial Resolution in Distributed Fiber Sensing Based on Dynamic Brillouin Grating in Optical Fibers

Long Variable Delay and Distributed Sensing Using Stationary and Localized Brillouin Dynamic Gratings

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