Poincare sphere representation for vector vortex modes of a few-mode fiber

C. Hari Krishna; Sourabh Roy

doi:10.1117/1.OE.58.1.016109

22 January 2019 Poincare sphere representation for vector vortex modes of a few-mode fiber

C. Hari Krishna, Sourabh Roy

Author Affiliations +

Optical Engineering, Vol. 58, Issue 1, 016109 (January 2019). https://doi.org/10.1117/1.OE.58.1.016109

Abstract

Poincare sphere (PS) representation for all possible modes of a few-mode optical fiber is presented. The fiber that can support up to two scalar modes is considered for the study. The polarization aspects of first-order linearly polarized degenerate modes and their possible combinations that generate inhomogeneously polarized vector vortex modes (VVMs) are discussed using Stokes analysis. A class of VVMs such as spiral and hybridly polarized modes, apart from well-known radial and azimuthal vector modes, are generated by the linear combination of first-order orthogonal linearly polarized modes with tilted polarization vector. All homogeneously polarized fiber modes are accommodated on standard PS, and inhomogeneously polarized vortex modes are accommodated on a pair of higher order PS. The location of VVM on higher order PS is justified by the positions of orthogonal linearly polarized modes on standard PS.

Citation Download Citation

C. Hari Krishna and Sourabh Roy "Poincare sphere representation for vector vortex modes of a few-mode fiber," Optical Engineering 58(1), 016109 (22 January 2019). https://doi.org/10.1117/1.OE.58.1.016109

Received: 2 November 2018; Accepted: 20 December 2018; Published: 22 January 2019

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