Tunable integrated ring resonators by femtosecond laser micromachining
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arXiv
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866911277477003264 |
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| author | Gualandi, Giulio Saretto, Fabio Pedroli, Daniele Corrielli, Giacomo Liscidini, Marco Osellame, Roberto Crespi, Andrea |
| author_facet | Gualandi, Giulio Saretto, Fabio Pedroli, Daniele Corrielli, Giacomo Liscidini, Marco Osellame, Roberto Crespi, Andrea |
| contents | Femtosecond Laser Micromachining (FLM) is a powerful technology for the fabrication of photonic devices. In this context, the integration of resonant elements within the platform represents a key advancement, enhancing both its versatility and its compatibility with a wide range of optical and fluidic components specifically enabled by this technique. Here, we report the realization of a tunable racetrack resonator fabricated by FLM and operating at telecom wavelengths. Leveraging low-loss waveguides, we obtained a Q factor of the resonator as high as 8 x 10^5 at critical coupling. Moreover, by integrating two thermo-optic phase shifters, we achieved both resonance tuning and dynamic control of the Q factor. This capability makes the device highly versatile for applications requiring dynamic spectral control, such as tunable filters, gyroscopes, and sensors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_16490 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Tunable integrated ring resonators by femtosecond laser micromachining Gualandi, Giulio Saretto, Fabio Pedroli, Daniele Corrielli, Giacomo Liscidini, Marco Osellame, Roberto Crespi, Andrea Optics Femtosecond Laser Micromachining (FLM) is a powerful technology for the fabrication of photonic devices. In this context, the integration of resonant elements within the platform represents a key advancement, enhancing both its versatility and its compatibility with a wide range of optical and fluidic components specifically enabled by this technique. Here, we report the realization of a tunable racetrack resonator fabricated by FLM and operating at telecom wavelengths. Leveraging low-loss waveguides, we obtained a Q factor of the resonator as high as 8 x 10^5 at critical coupling. Moreover, by integrating two thermo-optic phase shifters, we achieved both resonance tuning and dynamic control of the Q factor. This capability makes the device highly versatile for applications requiring dynamic spectral control, such as tunable filters, gyroscopes, and sensors. |
| title | Tunable integrated ring resonators by femtosecond laser micromachining |
| topic | Optics |
| url | https://arxiv.org/abs/2511.16490 |