SLM phase mask optimization for fiber OAM mode excitation

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedings – Annual report year: 2019Researchpeer-review

Standard

SLM phase mask optimization for fiber OAM mode excitation. / Astorino, Antonio (Invited author); Bañas, Andrew Rafael (Invited author); Rottwitt, Karsten (Invited author); Glückstad, Jesper (Invited author).

Proceedings of SPIE. ed. / Jesper Glückstad; David L. Andrews; Enrique J. Galvez . Vol. 10935 SPIE - International Society for Optical Engineering, 2019. 109350F (S P I E - International Society for Optical Engineering. Proceedings, Vol. 10935).

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedings – Annual report year: 2019Researchpeer-review

Harvard

Astorino, A, Bañas, AR, Rottwitt, K & Glückstad, J 2019, SLM phase mask optimization for fiber OAM mode excitation. in J Glückstad, DL Andrews & EJ Galvez (eds), Proceedings of SPIE. vol. 10935, 109350F, SPIE - International Society for Optical Engineering, S P I E - International Society for Optical Engineering. Proceedings, vol. 10935, Complex Light and Optical Forces XIII, San Francisco, United States, 05/02/2019. https://doi.org/10.1117/12.2507424

APA

Astorino, A., Bañas, A. R., Rottwitt, K., & Glückstad, J. (2019). SLM phase mask optimization for fiber OAM mode excitation. In J. Glückstad, D. L. Andrews, & E. J. Galvez (Eds.), Proceedings of SPIE (Vol. 10935). [109350F] SPIE - International Society for Optical Engineering. S P I E - International Society for Optical Engineering. Proceedings, Vol.. 10935 https://doi.org/10.1117/12.2507424

CBE

Astorino A, Bañas AR, Rottwitt K, Glückstad J. 2019. SLM phase mask optimization for fiber OAM mode excitation. Glückstad J, Andrews DL, Galvez EJ, editors. In Proceedings of SPIE. SPIE - International Society for Optical Engineering. (S P I E - International Society for Optical Engineering. Proceedings, Vol. 10935). https://doi.org/10.1117/12.2507424

MLA

Astorino, Antonio et al. "SLM phase mask optimization for fiber OAM mode excitation"., Glückstad, Jesper Andrews, David L. Galvez , Enrique J. (editors). Proceedings of SPIE. SPIE - International Society for Optical Engineering. (S P I E - International Society for Optical Engineering. Proceedings, Vol. 10935). 2019. https://doi.org/10.1117/12.2507424

Vancouver

Astorino A, Bañas AR, Rottwitt K, Glückstad J. SLM phase mask optimization for fiber OAM mode excitation. In Glückstad J, Andrews DL, Galvez EJ, editors, Proceedings of SPIE. Vol. 10935. SPIE - International Society for Optical Engineering. 2019. 109350F. (S P I E - International Society for Optical Engineering. Proceedings, Vol. 10935). https://doi.org/10.1117/12.2507424

Author

Astorino, Antonio ; Bañas, Andrew Rafael ; Rottwitt, Karsten ; Glückstad, Jesper. / SLM phase mask optimization for fiber OAM mode excitation. Proceedings of SPIE. editor / Jesper Glückstad ; David L. Andrews ; Enrique J. Galvez . Vol. 10935 SPIE - International Society for Optical Engineering, 2019. (S P I E - International Society for Optical Engineering. Proceedings, Vol. 10935).

Bibtex

@inproceedings{0a812b344d394984a007da2d53b7f5ab,
title = "SLM phase mask optimization for fiber OAM mode excitation",
abstract = "Fiber orbital angular momentum (OAM) modes can be employed in mode-division multiplexing to increase the channel capacity in optical communication systems. Over the years, several experiments to excite high-purity OAM modes by using one phase-only spatial light modulator (SLM) have been conducted. Since phase-only SLMs are intrinsically imperfect for this purpose due to the impossibility to simultaneously modulate both amplitude and phase in the light source, optimal phase masks need to be generated by iterative algorithms. However, if the state of every pixel in the mask is an unknown of the problem, the computational cost is extremely high. The system circular symmetry can be exploited to overcome this issue. Here, for the first time, this approach is implemented and a simple machine learning algorithm is developed to calculate optimal phase masks with a low number of unknowns and iterations. Simulated and experimental results show that the developed technique is capable of exciting high-purity OAM modes.",
keywords = "Orbital angular momentum of light, Fiber mode excitation, Gradient descent, Spatial light modulator, Machine learning",
author = "Antonio Astorino and Ba{\~n}as, {Andrew Rafael} and Karsten Rottwitt and Jesper Gl{\"u}ckstad",
year = "2019",
doi = "10.1117/12.2507424",
language = "English",
volume = "10935",
editor = "Jesper Gl{\"u}ckstad and Andrews, {David L. } and {Galvez }, {Enrique J.}",
booktitle = "Proceedings of SPIE",
publisher = "SPIE - International Society for Optical Engineering",

}

RIS

TY - GEN

T1 - SLM phase mask optimization for fiber OAM mode excitation

AU - Astorino, Antonio

AU - Bañas, Andrew Rafael

AU - Rottwitt, Karsten

AU - Glückstad, Jesper

PY - 2019

Y1 - 2019

N2 - Fiber orbital angular momentum (OAM) modes can be employed in mode-division multiplexing to increase the channel capacity in optical communication systems. Over the years, several experiments to excite high-purity OAM modes by using one phase-only spatial light modulator (SLM) have been conducted. Since phase-only SLMs are intrinsically imperfect for this purpose due to the impossibility to simultaneously modulate both amplitude and phase in the light source, optimal phase masks need to be generated by iterative algorithms. However, if the state of every pixel in the mask is an unknown of the problem, the computational cost is extremely high. The system circular symmetry can be exploited to overcome this issue. Here, for the first time, this approach is implemented and a simple machine learning algorithm is developed to calculate optimal phase masks with a low number of unknowns and iterations. Simulated and experimental results show that the developed technique is capable of exciting high-purity OAM modes.

AB - Fiber orbital angular momentum (OAM) modes can be employed in mode-division multiplexing to increase the channel capacity in optical communication systems. Over the years, several experiments to excite high-purity OAM modes by using one phase-only spatial light modulator (SLM) have been conducted. Since phase-only SLMs are intrinsically imperfect for this purpose due to the impossibility to simultaneously modulate both amplitude and phase in the light source, optimal phase masks need to be generated by iterative algorithms. However, if the state of every pixel in the mask is an unknown of the problem, the computational cost is extremely high. The system circular symmetry can be exploited to overcome this issue. Here, for the first time, this approach is implemented and a simple machine learning algorithm is developed to calculate optimal phase masks with a low number of unknowns and iterations. Simulated and experimental results show that the developed technique is capable of exciting high-purity OAM modes.

KW - Orbital angular momentum of light

KW - Fiber mode excitation

KW - Gradient descent

KW - Spatial light modulator

KW - Machine learning

U2 - 10.1117/12.2507424

DO - 10.1117/12.2507424

M3 - Article in proceedings

VL - 10935

BT - Proceedings of SPIE

A2 - Glückstad, Jesper

A2 - Andrews, David L.

A2 - Galvez , Enrique J.

PB - SPIE - International Society for Optical Engineering

ER -