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Authors: S. Scheerlinck, D. Taillaert, D. Van Thourhout, R. Baets
Title: Flexible metal grating based optical fiber probe for photonic integrated circuits
Format: International Journal
Publication date: 1/2008
Journal/Conference/Book: Applied Physics Letters
Volume(Issue): 92(3) p.031104
DOI: 10.1063/1.2827589
Citations: 58 (Dimensions.ai - last update: 24/3/2024)
36 (OpenCitations - last update: 3/5/2024)
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Abstract

An optical probe for photonic integrated circuits is proposed and demonstrated. The device is based on a single-mode fiber containing a subwavelength period metal grating on the facet. When approaching an integrated waveguide, light can be efficiently coupled between probe and waveguide without the need for integrated coupling structures, paving the way for wafer-scale circuit testing. A nanoimprint-and-transfer process were developed for fabricating this probe in a single step. We report 15% coupling efficiency between a gold grating fiber probe and a 220 nm×3 µm silicon-on-insulator waveguide and demonstrate testing of an integrated microring resonator using two probes.

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