Asymmetric wave propagation in planar chiral fibers
Author(s)Shemuly, Dana; Ruff, Zachary M.; Spektor, Grisha; Johnson, Steven G.; Fink, Yoel; Shapira, Ofer; Stolyarov, Alexander Mark; ... Show more Show less
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We demonstrate the realization of a two-dimensional chiral optical waveguide with an infinite translational symmetry that exhibits asymmetric wave propagation. The low-symmetry geometry of the cross-section that lacks any rotational and mirror symmetries shows in-principal directional asymmetric polarization rotation. We use general symmetry arguments to provide qualitative analysis of the waveguide's eigenstates and numerically corroborate this using finite element simulation. We show that despite the only perturbative break of time-reversal symmetry via small modal losses, the structure supports a non-degenerate pair of co-rotating elliptical modes. We fabricated meters long fiber with a spiral structure and studied its optical properties.
DepartmentMassachusetts Institute of Technology. Department of Mathematics; Massachusetts Institute of Technology. Research Laboratory of Electronics
Optical Society of America
Shemuly, Dana, Zachary M. Ruff, Alexander M. Stolyarov, Grisha Spektor, Steven G. Johnson, Yoel Fink, and Ofer Shapira. “Asymmetric wave propagation in planar chiral fibers.” Optics Express 21, no. 2 (January 14, 2013): 1465. © 2013 OSA
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