Probing the dispersive and spatial properties of photonic crystal waveguides via highly efficient coupling from fiber tapers

Citation

Barclay, P. E., Srinivasan, K., Borselli, M., & Painter, O. (2018). Probing the dispersive and spatial properties of planar photonic crystal waveguide modes via highly efficient coupling from optical fiber tapers. arXiv. https://arxiv.org/abs/physics/0307022 

Keywords

• photonic crystals
• waveguide modes
• optical fiber tapers
• evanescent coupling
• dispersion
• spatial properties
• high-Q resonant cavity
• silicon-on-insulator
• bandstructure
• coupling efficiency

Brief

A fiber taper can be used to probe the spatial and dispersive properties of planar photonic crystal waveguide modes, coupling light into and out of the waveguide with approximately 95% efficiency. 

Summary

This article presents a technique for coupling light into and out of photonic crystal waveguides (PCWGs) using optical fiber tapers. The technique is highly efficient, achieving a coupling efficiency of approximately 95%. The authors demonstrate the technique by coupling light from a fiber taper into a PCWG fabricated on a silicon-on-insulator (SOI) wafer. They use the fiber taper to probe the spatial and spectral properties of the PCWG modes, including the bandstructure and mode profiles. The authors believe that this technique will be useful for future research on photonic crystal devices. The authors of the article are Paul E. Barclay, Kartik Srinivasan, Matthew Borselli, and Oskar Painter. 

Origin: https://www.semanticscholar.org/reader/7b4b0eef1b563684aa7d4a5a84904b5c9992fe0d