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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 17 — Sep. 1, 2012
  • pp: 3645–3647

Efficient generation and multiplexing of optical orbital angular momentum modes in a ring fiber by using multiple coherent inputs

Yan Yan, Yang Yue, Hao Huang, Jeng-Yuan Yang, Mohammad R. Chitgarha, Nisar Ahmed, Moshe Tur, Samuel. J. Dolinar, and Alan E. Willner  »View Author Affiliations


Optics Letters, Vol. 37, Issue 17, pp. 3645-3647 (2012)
http://dx.doi.org/10.1364/OL.37.003645


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Abstract

We propose an approach to efficiently generate and multiplex optical orbital angular momentum (OAM) modes in a fiber with a ring refractive index profile by using multiple coherent inputs from a Gaussian mode. By controlling the phase relationship of the multiple inputs, one can selectively generate OAM modes of different states l. By controlling both the amplitude and phase of the multiple inputs, multiple OAM modes can be generated simultaneously without additional loss coming from multiplexing. We show, by simulation, the generation of OAM modes (OAM state |l|<3) with mode purity greater than 99%. The power loss of generating and multiplexing seven modes is about 35%. A transmitter for an OAM-based mode-division multiplexing system is proposed based on the discrete Fourier transform between the data carried by the multiple inputs and the data carried by the OAM modes. The experimental implementation of the proposed approach could be achieved by integrating ring fiber, multicore fiber, and photonic integrated circuit technology.

© 2012 Optical Society of America

OCIS Codes
(060.2380) Fiber optics and optical communications : Fiber optics sources and detectors
(050.4865) Diffraction and gratings : Optical vortices

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: June 21, 2012
Manuscript Accepted: July 11, 2012
Published: August 28, 2012

Citation
Yan Yan, Yang Yue, Hao Huang, Jeng-Yuan Yang, Mohammad R. Chitgarha, Nisar Ahmed, Moshe Tur, Samuel. J. Dolinar, and Alan E. Willner, "Efficient generation and multiplexing of optical orbital angular momentum modes in a ring fiber by using multiple coherent inputs," Opt. Lett. 37, 3645-3647 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-17-3645

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