Suspended silicon integrated platform for the long-wavelength mid-infrared band
| Autor: | Ahmed Osman, Zhibo Qu, G. Wanguemert-Perez, Íñigo Molina-Fernández, Ali Z. Khokhar, Robert Halir, Wei Cao, Alejandro Sánchez-Postigo, Pavel Cheben, Callum G. Littlejohns, Milos Nedeljkovic, Alejandro Ortega-Moñux, Jordi Soler Penades, Faysal El Mokhtari Mimum, Goran Z. Mashanovich |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Silicon Infrared chemistry.chemical_element 02 engineering and technology Grating 01 natural sciences subwavelength grating 010309 optics Fiber Bragg grating suspended silicon long-wave infrared 0103 physical sciences Lithography business.industry Redes ópticas Photonic integrated circuit mid-infrared 021001 nanoscience & nanotechnology Cladding (fiber optics) Bragg Wavelength chemistry Congresos y conferencias Optoelectronics 0210 nano-technology business |
| Zdroj: | RIUMA. Repositorio Institucional de la Universidad de Málaga instname ICTON |
| Popis: | The atmospheric-transmission window and the fingerprint region of many substances overlaps with the long-wave infrared band. This has enabled the emergence of a new path for photonic integrated circuits, which could exploit the potential applications of this wavelength range, including chemical and bio sensing. In this work we review our latest advances in the suspended silicon platform with subwavelength grating lateral cladding at 7.7-μm wavelength. Suspended waveguides only require one lithographic etch step and can be specifically designed to maximize sensitivity when used as sensors. Waveguides with propagation loss of 3.1±0.3 dB/cm are demonstrated, as well as bends with less than 0.1 dB/bend. Suspended waveguides based on shifted Bragg grating lateral cladding are also reported, with propagation loss of 5.1±0.6 dB/cm. These results prepare the ground for the development of a platform capable of covering the entire mid-infrared band. 2019 21st International Conference on Transparent Optical Networks (ICTON), July 9-13, Angers, France |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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