Grating couplers integrated on Mach-Zehnder interferometric biosensors operating in the visible range
We present the design, fabrication, and characterization of submicronic grating couplers integrated on SiN rib waveguide Mach-Zehnder interferometers (MZIs) for biosensing applications working in the visible spectral range for both TE and TM polarizations. Depending on the waveguide structure, a max...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2013 |
| País: | España |
| Institución: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:ddd.uab.cat:210800 |
| Acceso en línea: | https://ddd.uab.cat/record/210800 https://dx.doi.org/urn:doi:10.1109/JPHOT.2013.2251873 |
| Access Level: | acceso abierto |
| Palabra clave: | Gratings Couplings Couplers Biosensors Optical waveguides Sensitivity |
| Sumario: | We present the design, fabrication, and characterization of submicronic grating couplers integrated on SiN rib waveguide Mach-Zehnder interferometers (MZIs) for biosensing applications working in the visible spectral range for both TE and TM polarizations. Depending on the waveguide structure, a maximum of 11.5% of coupling efficiency has been experimentally obtained at 658 nm, while a limit of detection of 1.6 × 10 in refractive index unit is achieved for the biosensor. These results represent an important milestone toward the achievement of a truly portable and multiplexed point-of-care platform using the integrated MZI sensor. |
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