Mode decomposition of multimode optical fiber beams by phase-only spatial light modulator

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Mode decomposition of multimode optical fiber beams by phase-only spatial light modulator. / Gervaziev, M. D.; Zhdanov, I.; Kharenko, D. S. et al.

In: Laser Physics Letters, Vol. 18, No. 1, 015101, 01.2021.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{f7fdbd28a01840528f135b241205035c,

title = "Mode decomposition of multimode optical fiber beams by phase-only spatial light modulator",

abstract = "Multimode optical fibers (MMF) recently attracted a renewed attention, because of their potential for spatial division multiplexing, medical imaging and high-power fiber lasers, thanks to the discovery of new nonlinear optical effects, such as Kerr beam self-cleaning, spatiotemporal mode-locking, and geometric parametric instability, to name a few. The main feature of these effects is that many transverse modes are involved in nonlinear interactions. To advance our understanding, it is necessary to analyse the modal content of beams at the output of MMFs. In this work, based on a computer digital holography method using a phase-only spatial light modulator (SLM) as a correlation filter, we experimentally demonstrate a method of mode decomposition involving a large (≃80) number of fiber modes. To obtain this, we carried out a SLM calibration, and numerically investigated the most critical parameters which affect the fidelity of the decomposition, by comparing experimental and reconstructed beam patterns in both the linear (speckled structures) and in the nonlinear (self-cleaned beams) propagation regime. ",

keywords = "beam characterization, GRIN multi-mode fibers, mode decomposition, spatial light modulation",

author = "Gervaziev, {M. D.} and I. Zhdanov and Kharenko, {D. S.} and Gonta, {V. A.} and Volosi, {V. M.} and Podivilov, {E. V.} and Babin, {S. A.} and S. Wabnitz",

year = "2021",

month = jan,

doi = "10.1088/1612-202X/abcf27",

language = "English",

volume = "18",

journal = "Laser Physics Letters",

issn = "1612-2011",

publisher = "IOP Publishing Ltd.",

number = "1",

}

RIS

TY - JOUR

T1 - Mode decomposition of multimode optical fiber beams by phase-only spatial light modulator

AU - Gervaziev, M. D.

AU - Zhdanov, I.

AU - Kharenko, D. S.

AU - Gonta, V. A.

AU - Volosi, V. M.

AU - Podivilov, E. V.

AU - Babin, S. A.

AU - Wabnitz, S.

PY - 2021/1

Y1 - 2021/1

N2 - Multimode optical fibers (MMF) recently attracted a renewed attention, because of their potential for spatial division multiplexing, medical imaging and high-power fiber lasers, thanks to the discovery of new nonlinear optical effects, such as Kerr beam self-cleaning, spatiotemporal mode-locking, and geometric parametric instability, to name a few. The main feature of these effects is that many transverse modes are involved in nonlinear interactions. To advance our understanding, it is necessary to analyse the modal content of beams at the output of MMFs. In this work, based on a computer digital holography method using a phase-only spatial light modulator (SLM) as a correlation filter, we experimentally demonstrate a method of mode decomposition involving a large (≃80) number of fiber modes. To obtain this, we carried out a SLM calibration, and numerically investigated the most critical parameters which affect the fidelity of the decomposition, by comparing experimental and reconstructed beam patterns in both the linear (speckled structures) and in the nonlinear (self-cleaned beams) propagation regime.

AB - Multimode optical fibers (MMF) recently attracted a renewed attention, because of their potential for spatial division multiplexing, medical imaging and high-power fiber lasers, thanks to the discovery of new nonlinear optical effects, such as Kerr beam self-cleaning, spatiotemporal mode-locking, and geometric parametric instability, to name a few. The main feature of these effects is that many transverse modes are involved in nonlinear interactions. To advance our understanding, it is necessary to analyse the modal content of beams at the output of MMFs. In this work, based on a computer digital holography method using a phase-only spatial light modulator (SLM) as a correlation filter, we experimentally demonstrate a method of mode decomposition involving a large (≃80) number of fiber modes. To obtain this, we carried out a SLM calibration, and numerically investigated the most critical parameters which affect the fidelity of the decomposition, by comparing experimental and reconstructed beam patterns in both the linear (speckled structures) and in the nonlinear (self-cleaned beams) propagation regime.

KW - beam characterization

KW - GRIN multi-mode fibers

KW - mode decomposition

KW - spatial light modulation

UR - http://www.scopus.com/inward/record.url?scp=85099080202&partnerID=8YFLogxK

U2 - 10.1088/1612-202X/abcf27

DO - 10.1088/1612-202X/abcf27

M3 - Article

AN - SCOPUS:85099080202

VL - 18

JO - Laser Physics Letters

JF - Laser Physics Letters

SN - 1612-2011

IS - 1

M1 - 015101

ER -

ID: 27415372