Experimental observation of forward stimulated Brillouin scattering in dual-mode single-core fibre

Russell, P. St. J.; Culverhouse, D.O.; Farahi, Faramarz

doi:10.1049/el:19900773

Cited by 62 publications

(53 citation statements)

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“…The frequencies of the acoustic waves in backwards SBS are typically on the order of 10 GHz, and their transverse profiles are largely confined to the core just like the optical mode. In order to note the similarities and distinctions between the two effects, the stimulation of transverse guided acoustic waves is often referred to as forward SBS [15].…”

Section: Opto-mechanical Interactions In Multi-core Fibersmentioning

confidence: 99%

Opto-Mechanical Interactions in Multi-Core Optical Fibers and Their Applications

Diamandi

London

Bergman

et al. 2020

IEEE J. Select. Topics Quantum Electron.

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Optical fibers containing multiple cores are being developed towards capacity enhancement in space-division multiplexed optical communication networks. In many cases, the fibers are designed for negligible direct coupling of optical power among the cores. The cores remain, however, embedded in a single, mechanically-unified cladding. Elastic (or acoustic) modes supported by the fiber cladding geometry are in overlap with multiple cores. Acoustic waves may be stimulated by light in any core through electrostriction. Once excited, the acoustic waves may induce photo-elastic perturbations to optical waves in other cores as well. Such opto-mechanical coupling gives rise to inter-core cross-phase modulation effects, even when direct optical crosstalk is very weak. The cross-phase modulation spectrum reaches hundreds of megahertz frequencies. It may consist of discrete and narrow peaks, or may become quasi-continuous, depending on the geometric layout. The magnitude of the effect at the resonance frequencies is comparable with that of intra-core cross-phase modulation due to Kerr nonlinearity. Two potential applications are demonstrated: single-frequency opto-electronic oscillators that do not require radio-frequency electrical filters, and point-sensing of liquids outside the cladding of multi-core fibers, where light cannot reach.

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Section: Opto-mechanical Interactions In Multi-core Fibersmentioning

confidence: 99%

Opto-Mechanical Interactions in Multi-Core Optical Fibers and Their Applications

Diamandi

London

Bergman

et al. 2020

IEEE J. Select. Topics Quantum Electron.

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“…Momentum conservation, or spatial phase-matching, for the Stokes process demands β p = β s + K. The process is commonly referred to as backward and forward SBS [11] (BSBS and FSBS) in the case of counter-and co-propagating optical modes, respectively. Additionally sound can scatter light between different modes of a waveguide, referred to as intermodal SBS or stimulated inter-polarization scattering (SIPS) [12], which we do not consider here. These conservation laws are reflected in the dynamics of the envelope functions as described by the coupled mode equations [13] (…”

Section: Introductionmentioning

confidence: 99%

Guided acoustic and optical waves in silicon-on-insulator for Brillouin scattering and optomechanics

Sarabalis

Hill

2016

APL Photonics

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We numerically study silicon waveguides on silica showing that it is possible to simultaneously guide optical and acoustic waves in the technologically important silicon on insulator (SOI) material system. Thin waveguides, or fins, exhibit geometrically softened mechanical modes at gigahertz frequencies with phase velocities below the Rayleigh velocity in glass, eliminating acoustic radiation losses. We propose slot waveguides on glass with telecom optical frequencies and strong radiation pressure forces resulting in Brillouin gains on the order of 500 and 50,000 1/(Wm) for backward and forward Brillouin scattering, respectively.

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“…Fiber optic distributed temperature sensors using liquid core fiber (Hartog and Payne, 1982), using anti-Stokes-Raman spectrum (Dakin et al, 1985), and stimulated Brillouin scattering (Culverhouse et al, 1989) have also been developed. Recently a new non-linear phenomenon in optical fiber called forward stimulated Brillouin scattering has been reported (Russell et al, 1990) which is described by periodic coupling between two spatial modes in optical fibers with the coupling provided by a travelling acoustic wave. Flextural wave is generated through the strain-optic effect, and when the wavelength equals the beat length of the fiber the mode coupling occurs with a down-shift in the frequency of the coupled beam.…”

Section: Discussionmentioning

confidence: 99%

Applications of Fiber Optic Sensors in Engineering Mechanics

Ansari¹

1993

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Experimental observation of forward stimulated Brillouin scattering in dual-mode single-core fibre

Cited by 62 publications

References 0 publications

Opto-Mechanical Interactions in Multi-Core Optical Fibers and Their Applications

Opto-Mechanical Interactions in Multi-Core Optical Fibers and Their Applications

Guided acoustic and optical waves in silicon-on-insulator for Brillouin scattering and optomechanics

Applications of Fiber Optic Sensors in Engineering Mechanics

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