Mode properties and propagation effects of optical orbital angular momentum (OAM) modes in a ring fiber

Yang Yue; Yan Yan; Nisar Ahmed; Jeng Yuan Yang; Lin Zhang; Yongxiong Ren; Hao Huang; Kevin M. Birnbaum; Baris I. Erkmen; Sam Dolinar; Moshe Tur; Alan E. Willner

doi:10.1109/JPHOT.2012.2192474

Mode properties and propagation effects of optical orbital angular momentum (OAM) modes in a ring fiber

Yang Yue^*
, Yan Yan
, Nisar Ahmed
, Jeng Yuan Yang
, Lin Zhang
, Yongxiong Ren
, Hao Huang
, Kevin M. Birnbaum
, Baris I. Erkmen
, Sam Dolinar
, Moshe Tur
, Alan E. Willner

^*Corresponding author for this work

School of Electrical Engineering

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

259 Scopus citations

Abstract

We simulate and analyze the mode properties and propagation effects of orbital angular momentum (OAM) modes in a ring fiber. A ring fiber with 0.05 up-doping is designed in simulation to support up to 10 OAM modes while maintaining single-mode condition radially. With a multiple-ring fiber, tens of OAM modes can be potentially multiplexed to greatly enhance the system capacity and spectral efficiency. The mode index difference can be maintained above 10 ^-4 over hundreds of nanometers optical bandwidth. Higher order OAM modes' azimuthal intensity and odd-order OAM modes' azimuthal phase show better tolerance to the fiber ellipticity. Moreover, higher order OAM modes also have longer 2π and 10-ps walk-off length. After 600-km propagation, OAM _0,4 mode shows < 10-ps mode walk-off, even in a ring fiber with 1% ellipticity. Also, in such an elliptical fiber, the well-aligned OAM modes with different charges have < -20 dB intermode crosstalk. The improvement of the circularity for the ring fiber is expected to reduce the crosstalk and increase the demultiplexing efficiency.

Original language	English
Article number	6177999
Pages (from-to)	535-543
Number of pages	9
Journal	IEEE Photonics Journal
Volume	4
Issue number	2
DOIs	https://doi.org/10.1109/JPHOT.2012.2192474
State	Published - 2012

Funding

Funders
Defense Advanced Research Projects Agency

Keywords

Fiber optics systems
multiplexing
optics
orbital angular momentum
waveguides

Access to Document

10.1109/JPHOT.2012.2192474

Cite this

@article{6d11a95c5f584b38aee8bd2e9bfc189a,

title = "Mode properties and propagation effects of optical orbital angular momentum (OAM) modes in a ring fiber",

abstract = "We simulate and analyze the mode properties and propagation effects of orbital angular momentum (OAM) modes in a ring fiber. A ring fiber with 0.05 up-doping is designed in simulation to support up to 10 OAM modes while maintaining single-mode condition radially. With a multiple-ring fiber, tens of OAM modes can be potentially multiplexed to greatly enhance the system capacity and spectral efficiency. The mode index difference can be maintained above 10 -4 over hundreds of nanometers optical bandwidth. Higher order OAM modes' azimuthal intensity and odd-order OAM modes' azimuthal phase show better tolerance to the fiber ellipticity. Moreover, higher order OAM modes also have longer 2π and 10-ps walk-off length. After 600-km propagation, OAM 0,4 mode shows < 10-ps mode walk-off, even in a ring fiber with 1\% ellipticity. Also, in such an elliptical fiber, the well-aligned OAM modes with different charges have < -20 dB intermode crosstalk. The improvement of the circularity for the ring fiber is expected to reduce the crosstalk and increase the demultiplexing efficiency.",

keywords = "Fiber optics systems, multiplexing, optics, orbital angular momentum, waveguides",

author = "Yang Yue and Yan Yan and Nisar Ahmed and Yang, \{Jeng Yuan\} and Lin Zhang and Yongxiong Ren and Hao Huang and Birnbaum, \{Kevin M.\} and Erkmen, \{Baris I.\} and Sam Dolinar and Moshe Tur and Willner, \{Alan E.\}",

note = "Funding Information: Manuscript received February 25, 2012; revised March 22, 2012; accepted March 23, 2012. Date of current version April 6, 2012. This work was supported by the Defense Advanced Research Projects Agency under Information in a Photon (InPho) program. Corresponding author: Y. Yue (e-mail: yyue@ usc.edu).",

year = "2012",

doi = "10.1109/JPHOT.2012.2192474",

language = "אנגלית",

volume = "4",

pages = "535--543",

journal = "IEEE Photonics Journal",

issn = "1943-0655",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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TY - JOUR

T1 - Mode properties and propagation effects of optical orbital angular momentum (OAM) modes in a ring fiber

AU - Yue, Yang

AU - Yan, Yan

AU - Ahmed, Nisar

AU - Yang, Jeng Yuan

AU - Zhang, Lin

AU - Ren, Yongxiong

AU - Huang, Hao

AU - Birnbaum, Kevin M.

AU - Erkmen, Baris I.

AU - Dolinar, Sam

AU - Tur, Moshe

AU - Willner, Alan E.

N1 - Funding Information: Manuscript received February 25, 2012; revised March 22, 2012; accepted March 23, 2012. Date of current version April 6, 2012. This work was supported by the Defense Advanced Research Projects Agency under Information in a Photon (InPho) program. Corresponding author: Y. Yue (e-mail: yyue@ usc.edu).

PY - 2012

Y1 - 2012

N2 - We simulate and analyze the mode properties and propagation effects of orbital angular momentum (OAM) modes in a ring fiber. A ring fiber with 0.05 up-doping is designed in simulation to support up to 10 OAM modes while maintaining single-mode condition radially. With a multiple-ring fiber, tens of OAM modes can be potentially multiplexed to greatly enhance the system capacity and spectral efficiency. The mode index difference can be maintained above 10 -4 over hundreds of nanometers optical bandwidth. Higher order OAM modes' azimuthal intensity and odd-order OAM modes' azimuthal phase show better tolerance to the fiber ellipticity. Moreover, higher order OAM modes also have longer 2π and 10-ps walk-off length. After 600-km propagation, OAM 0,4 mode shows < 10-ps mode walk-off, even in a ring fiber with 1% ellipticity. Also, in such an elliptical fiber, the well-aligned OAM modes with different charges have < -20 dB intermode crosstalk. The improvement of the circularity for the ring fiber is expected to reduce the crosstalk and increase the demultiplexing efficiency.

AB - We simulate and analyze the mode properties and propagation effects of orbital angular momentum (OAM) modes in a ring fiber. A ring fiber with 0.05 up-doping is designed in simulation to support up to 10 OAM modes while maintaining single-mode condition radially. With a multiple-ring fiber, tens of OAM modes can be potentially multiplexed to greatly enhance the system capacity and spectral efficiency. The mode index difference can be maintained above 10 -4 over hundreds of nanometers optical bandwidth. Higher order OAM modes' azimuthal intensity and odd-order OAM modes' azimuthal phase show better tolerance to the fiber ellipticity. Moreover, higher order OAM modes also have longer 2π and 10-ps walk-off length. After 600-km propagation, OAM 0,4 mode shows < 10-ps mode walk-off, even in a ring fiber with 1% ellipticity. Also, in such an elliptical fiber, the well-aligned OAM modes with different charges have < -20 dB intermode crosstalk. The improvement of the circularity for the ring fiber is expected to reduce the crosstalk and increase the demultiplexing efficiency.

KW - Fiber optics systems

KW - multiplexing

KW - optics

KW - orbital angular momentum

KW - waveguides

UR - https://www.scopus.com/pages/publications/84859985314

U2 - 10.1109/JPHOT.2012.2192474

DO - 10.1109/JPHOT.2012.2192474

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SN - 1943-0655

VL - 4

SP - 535

EP - 543

JO - IEEE Photonics Journal

JF - IEEE Photonics Journal

IS - 2

M1 - 6177999

ER -

Mode properties and propagation effects of optical orbital angular momentum (OAM) modes in a ring fiber

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