Projects per year
Abstract
Understanding and mitigating optical loss is critical to the development of high-performance photonic integrated circuits (PICs). In particular, in high refractive index contrast compound semiconductor (III–V) PICs, surface absorption and scattering can be a significant loss mechanism, and needs to be suppressed. Here, we quantify the optical propagation loss due to surface state absorption in a suspended GaAs PIC platform, probe its origins using x-ray photoemission spectroscopy and spectroscopic ellipsometry, and show that it can be mitigated by surface passivation using alumina (Al2O3).
Original language | English |
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Article number | 15 |
Pages (from-to) | 3861-3864 |
Number of pages | 4 |
Journal | Optics Letters |
Volume | 48 |
Issue number | 15 |
DOIs | |
Publication status | Published - 18 Jul 2023 |
Bibliographical note
Publisher Copyright:© 2023 OSA - The Optical Society. All rights reserved.
Research Groups and Themes
- Photonics and Quantum
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Dive into the research topics of 'Quantifying and mitigating optical surface loss in suspended GaAs photonic integrated circuits'. Together they form a unique fingerprint.Projects
- 1 Finished
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GASP: Gallium Arsenide (III-V) photonic integrated circuits built like Silicon Photonics
Coimbatore Balram, K. (Principal Investigator)
27/07/21 → 26/07/23
Project: Research