Journal article
Optimization of single-mode sapphire waveguide Bragg gratings
- Abstract:
- We demonstrate the fabrication and optimization of waveguide Bragg gratings on single-crystal sapphire substrates using femtosecond laser direct writing. The gratings are fabricated using modulated bursts and are embedded inside single-mode depressed cladding waveguides. Through design optimization, and fabrication parameter tuning, a depressed cladding waveguide with a loss of ∼0.8 dB/cm and a Bragg grating with a reflectivity of higher than 90% in the telecommunications wavelength band are demonstrated. The waveguide Bragg grating exhibits stable thermal properties under annealing at 1200°C. A sampled grating and a grating array are also demonstrated, showing the potential for more complex grating designs.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
Actions
Access Document
- Files:
-
-
(Preview, Accepted manuscript, pdf, 6.4MB, Terms of use)
-
- Publisher copy:
- 10.1109/jlt.2024.3396752
Authors
- Publisher:
- IEEE
- Journal:
- Journal of Lightwave Technology More from this journal
- Volume:
- 42
- Issue:
- 16
- Pages:
- 5629-5638
- Publication date:
- 2024-05-03
- Acceptance date:
- 2024-04-13
- DOI:
- EISSN:
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1558-2213
- ISSN:
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0733-8724
- Language:
-
English
- Keywords:
- Pubs id:
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1995221
- Local pid:
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pubs:1995221
- Deposit date:
-
2024-05-23
Terms of use
- Copyright holder:
- IEEE
- Copyright date:
- 2024
- Rights statement:
- © 2024 IEEE.
- Notes:
- For the purpose of open access, the authors have applied a Creative Commons Attribution (CC BY) license to any Accepted Manuscript version arising. This is the accepted manuscript version of the article. The final version is available online from IEEE at: https://dx.doi.org/10.1109/jlt.2024.3396752
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