Transmission of Slow Light through Photonic Crystal Waveguide Bends

Abstract

The spectral dependence of a bending loss of cascaded 60-degree bends in photonic crystal (PhC) waveguides is explored in a slab-type silicon-on-insulator system. Ultra-low bending loss of (0.05+/-0.03)dB/bend is measured at wavelengths corresponding to the nearly dispersionless transmission regime. In contrast, the PhC bend is found to become completely opaque for wavelengths range corresponding to the slow light regime. A general strategy is presented and experimentally verified to optimize the bend design for improved slow light transmission.

4 pages, 3 figures; submitted to Optics Letters

References in corpus (1)

• Mapping the optical properties of slab-type two-dimensional photonic crystal waveguides

Cited by in corpus (5)

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• Coupled-resonator-induced reflection in photonic-crystal waveguide structures
• Demonstration of an air-slot mode-gap confined photonic crystal slab nanocavity with ultrasmall mode volumes
• Topologically-protected single-photon sources with topological slow light photonic crystal waveguides
• Valley photonic crystal waveguides fabricated with CMOS-compatible process