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Integrated High-Contrast-Grating Optical Sensor Using Guided Mode (2014)

Institute of Electrical and Electronics Engineers (IEEE)

In: IEEE Journal of Quantum Electronics

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Publication Date: 2014-12-13

Description: In finite-size high-contrast gratings (HCGs) guided modes with low $Q$ values can occur. On the one hand, this is a resonant mode with a $Q$ value of some hundreds only, on the other hand it can transform part of the finite-size incident wave into the in-plane direction. Such finite-size HCGs with guided modes are proposed here for optical sensors with an on-chip integrated p-i-n photodiode in the same HCG layer. The mode characteristics of the guided mode and the performance of the proposed integrated HCG-based optical sensors are investigated. The proposed integrated HCG-based optical sensors are compact, cost-effective, label-free, and highly sensitive, and can be extended to an array format increasing the throughput.

Print ISSN: 0018-9197

Electronic ISSN: 1558-1713

Topics: Electrical Engineering, Measurement and Control Technology

Published by Institute of Electrical and Electronics Engineers (IEEE) on behalf of The IEEE Photonics Society.

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