Asymmetric wave propagation in planar chiral fibers
| Autor: | Yoel Fink, Ofer Shapira, Steven G. Johnson, Alexander M. Stolyarov, Dana Shemuly, Grisha Spektor, Zachary Ruff |
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| Rok vydání: | 2013 |
| Předmět: |
Optical fiber
Light Wave propagation Physics::Optics 02 engineering and technology 01 natural sciences Waveguide (optics) law.invention 010309 optics Optics Planar law 0103 physical sciences Fiber Optic Technology Scattering Radiation Computer Simulation Translational symmetry Physics business.industry Equipment Design Models Theoretical 021001 nanoscience & nanotechnology Polarization (waves) Atomic and Molecular Physics and Optics Equipment Failure Analysis Refractometry Computer-Aided Design 0210 nano-technology business Refractive index Photonic-crystal fiber |
| Zdroj: | Optics Express. 21:1465 |
| ISSN: | 1094-4087 |
| DOI: | 10.1364/oe.21.001465 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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