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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Loss Compensation in Microring-Based Si Photonics Devices via Er3+Doped Claddings

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Jarschel, Paulo Felipe [1] ; Souza, Mario C. M. M. [1] ; Merlo, Rafael Borges [1] ; Frateschi, Newton C. [1]
Total Authors: 4
[1] Univ Estadual Campinas, Gleb Wataghin Phys Inst, Appl Phys Dept, UNICAMP, Device Res Lab, BR-13083859 Campinas, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: IEEE Photonics Journal; v. 10, n. 4 AUG 2018.
Web of Science Citations: 0

We propose and demonstrate a method to compensate insertion losses in Si photonics devices based on ring resonators fabricated in SOI foundries, with no additional chip area used. It consists in the employment of Er:Al2O3 as the upper cladding layer on standard Si/SiO2 rings, requiring only one simple post-processing step. The method is modeled in detail, and simulation results for single-ring configurations and photonic molecules are discussed, where the potential for loss reduction is predicted for different design choices based on the quality factor. We experimentally verify the viability of the method, obtaining an output power increase of 1 dB when a single-ring resonator is pumped. This value is increased when the method is applied to devices based on photonic molecules, where a value of 2.6 dB has been measured. This is equivalent to a loss reduction potential higher than 3 dB for a photonic molecule designed to achieve a quality factor of 50000. (AU)

FAPESP's process: 08/57857-2 - Photonics for optical communications
Grantee:Hugo Luis Fragnito
Support type: Research Projects - Thematic Grants
FAPESP's process: 14/04748-2 - Coupled microresonators applied to signal processing and photonics integration
Grantee:Mário César Mendes Machado de Souza
Support type: Scholarships in Brazil - Doctorate