Photonic chip for visible interferometry: laboratory characterization and comparison with the theoretical model
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| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866929489285480448 |
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| author | Lallement, Manon Lacour, Sylvestre Huby, Elsa Martin, Guillermo Barjot, Kevin Perrin, Guy Rouan, Daniel Lapeyrere, Vincent Vievard, Sebastien Guyon, Olivier Lozi, Julien Deo, Vincent Kotani, Takayuki Pham, Cecil Cassagnettes, Cedric Billat, Adrien Cvetojevic, Nick Marchis, Franck |
| author_facet | Lallement, Manon Lacour, Sylvestre Huby, Elsa Martin, Guillermo Barjot, Kevin Perrin, Guy Rouan, Daniel Lapeyrere, Vincent Vievard, Sebastien Guyon, Olivier Lozi, Julien Deo, Vincent Kotani, Takayuki Pham, Cecil Cassagnettes, Cedric Billat, Adrien Cvetojevic, Nick Marchis, Franck |
| contents | Integrated optics are used to achieve astronomical interferometry inside robust and compact materials, improving the instruments stability and sensitivity. In order to perform differential phase measurements at the H$α$ line (656.3 nm) with the 600-800 nm spectro-interferometer FIRST, a photonic integrated circuit (PIC) is being developed. This PIC performs the visible combination of the beams coming from the telescope pupil sub-apertures. In this work, TEEM Photonics waveguides fabricated by $K_+:Na_+$ ion exchange in glass are characterized in terms of single-mode range and mode field diameter. The waveguide diffused index profile is modeled on Beamprop software. FIRST beam combiner building blocks are simulated, especially achromatic directional couplers and passive $π/2$ phase shifters for a potential ABCD interferometric combination. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_03808 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Photonic chip for visible interferometry: laboratory characterization and comparison with the theoretical model Lallement, Manon Lacour, Sylvestre Huby, Elsa Martin, Guillermo Barjot, Kevin Perrin, Guy Rouan, Daniel Lapeyrere, Vincent Vievard, Sebastien Guyon, Olivier Lozi, Julien Deo, Vincent Kotani, Takayuki Pham, Cecil Cassagnettes, Cedric Billat, Adrien Cvetojevic, Nick Marchis, Franck Instrumentation and Methods for Astrophysics Integrated optics are used to achieve astronomical interferometry inside robust and compact materials, improving the instruments stability and sensitivity. In order to perform differential phase measurements at the H$α$ line (656.3 nm) with the 600-800 nm spectro-interferometer FIRST, a photonic integrated circuit (PIC) is being developed. This PIC performs the visible combination of the beams coming from the telescope pupil sub-apertures. In this work, TEEM Photonics waveguides fabricated by $K_+:Na_+$ ion exchange in glass are characterized in terms of single-mode range and mode field diameter. The waveguide diffused index profile is modeled on Beamprop software. FIRST beam combiner building blocks are simulated, especially achromatic directional couplers and passive $π/2$ phase shifters for a potential ABCD interferometric combination. |
| title | Photonic chip for visible interferometry: laboratory characterization and comparison with the theoretical model |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2409.03808 |