All-optical dynamic grating generation based on Brillouin scattering in polarization-maintaining fiber

Song, Kwang Yong; Zou, Weiwen; He, Zuyuan; Hotate, Kazuo

doi:10.1364/ol.33.000926

Cited by 230 publications

(176 citation statements)

References 6 publications

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“…In recent studies [22][23][24], the concept of Brillouin dynamic grating (BDG) has been newly implemented in polarizationmaintaining fibers (PMFs), where acoustic waves generated during the process of stimulated Brillouin scattering (SBS) by optical waves (pump waves) in one polarization are used to reflect an orthogonally polarized wave (probe wave) at a different optical frequency from the pump. As shown in the conceptual scheme in Fig.…”

Section: Brillouin Dynamic Grating Distributed Sensing (Bdg-ds)mentioning

confidence: 99%

Brillouin distributed time-domain sensing in optical fibers: state of the art and perspectives

Thévenaz

2010

Front. Optoelectron. China

109

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Optical fiber sensors based on stimulated Brillouin scattering 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. After explaining the principle and presenting the standard implementation, the latest developments in this class of sensors will be introduced, such as the possibility to measure with a spatial resolution of 10 cm and below while preserving the full accuracy on the determination of temperature and strain.

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Section: Brillouin Dynamic Grating Distributed Sensing (Bdg-ds)mentioning

confidence: 99%

Brillouin distributed time-domain sensing in optical fibers: state of the art and perspectives

Thévenaz

2010

Front. Optoelectron. China

109

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“…In such a situation, a light signal traveling along the orthogonal polarization axis with respect to the pumps is of great interest, since its light can be reflected by the grating. However, it must be noticed that the optical frequency of this signal light has to be different to the orthogonally polarized pumping waves, since the Bragg condition is satisfied at a distinct frequency as a result of the difference in the refractive index between the slow and fast polarization axes [16]. Actually, the properties of the grating in terms of spectral bandwidth and reflectance can be dynamically controlled by simply varying the time waveform of the two pump waves, thereby designated as dynamic Brillouin grating (DBG).…”

Section: Principle Of Dbg-dsmentioning

confidence: 99%

“…The central frequency of the dynamic grating can be simply calculated by the expression [16] (1) where is the group index. This expression basically results from the strict frequency matching condition for stimulated Brillouin scattering in optical fibers [14], [15] (2) and being the refractive indices along the slow and fast axes of the fiber, respectively, the superscripts representing the polarization direction of the optical waves and being the acoustic velocity.…”

Section: Principle Of Dbg-dsmentioning

confidence: 99%

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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“…The generation of dynamic Brillouin gratings is based on the following principle [1]: two intense optical waves counterpropagating along the slow axis of a polarization maintaining fiber can create a localized acoustic grating (Brillouin dynamic grating) at a given point using SBS if they are properly modulated (e.g. optical pulses), as shown in Fig.1.…”

Section: Principlementioning

confidence: 99%

Dynamic Brillouin gratings: A new tool in fibers for all-optical signal processing

Thévenaz

Primerov

Chin

et al. 2011

IEEE Photonic Society 24th Annual Meeting

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Abstract:The recent possibility to generate dynamic Bragg gratings by the interaction of 2 optical waves through stimulated Brillouin scattering in highly birefringent fibers has opened a new field to realize all-optical fiber-based functions. The generation of dynamic Bragg gratings by the interaction of 2 optical waves through stimulated Brillouin scattering has offered the possibility to implement all-optical functions that were so far impossible to realize in optical fibers. Using this feature a local and temporary grating can be placed at any position along an optical fiber and can be repositioned dynamically with a total flexibility through a purely optical interaction. This new tool has found direct applications in all-optical delay lines, demonstrating a tunable delaying capacity of more than 1 microsecond with an ideal reconfiguration time. But it turns out that its field of application is much vaster, from optical storage and analog operations on the signal (time reversal, derivative, integration) to distributed sensing with an extreme spatial resolution.

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All-optical dynamic grating generation based on Brillouin scattering in polarization-maintaining fiber

Cited by 230 publications

References 6 publications

Brillouin distributed time-domain sensing in optical fibers: state of the art and perspectives

Brillouin distributed time-domain sensing in optical fibers: state of the art and perspectives

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

Dynamic Brillouin gratings: A new tool in fibers for all-optical signal processing

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