Characterization of Rayleigh backscattering arising in various two-mode fibers

Yu, Dejie; Fu, Songnian; Cao, Zizheng; Tang, Ming; Deng, Lei; Liu, Deming; Giles, Ian; Koonen, Ton; Okonkwo, Chigo

doi:10.1364/oe.24.012192

Cited by 5 publications

(2 citation statements)

References 29 publications

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“…This could be solved in the future by using advanced coupling techniques such as the use of a spatial light modulator for mode launching, 27,28 femtosecond-laser-written mode couplers, 29 and photonic lanterns. 30…”

Section: Determining Scatterer Locationmentioning

confidence: 99%

Two-dimensional mapping of surface scatterers on an optical fiber core using selective mode launching

Lü

Nguyen

et al. 2021

APL Photonics

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The tracking of small particles is an important but challenging task for biological applications such as disease diagnostics and medical research. Current methods are limited to the use of bulky instruments such as flow cytometers and microscopes. Here, a novel technique for the detection and measurement of micron-scale optical scatterers using a few-mode exposed-core microstructured optical fiber is proposed. Through selective mode launching combined with optical frequency domain reflectometry, scatterers located on the fiber core surface can be simultaneously mapped with both longitudinal and transverse information. This technique is demonstrated by detecting the two-dimensional positions of several femtosecond-laser-inscribed micron-scale ablations written at different locations on the fiber core surface. Due to the compact nature of the optical fiber and its local sensitivity to scatterers that are in close proximity to it, this technique has the potential for the measurement and detection of micron-scale particles in difficult to reach biological environments for in vivo applications.

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Section: Determining Scatterer Locationmentioning

confidence: 99%

Two-dimensional mapping of surface scatterers on an optical fiber core using selective mode launching

Lü

Nguyen

et al. 2021

APL Photonics

View full text Add to dashboard Cite

show abstract

“…Therefore, amplitude demodulation is widely used in φ-OTDR. In the past several years, different schemes have been proposed to accurately locate the vibration signal, including optimization of system structure [9][10][11][12][13][14] and improvement of signal processing algorithms [15][16][17][18][19][20]. From the point of system setup, φ-OTDR generally adopts single channel to sense the external physical quantities.…”

Section: Introductionmentioning

confidence: 99%