Data Availability Statement Policy

Under this new policy, all authors must declare if and how any data that were generated or analyzed as part of the current study can be accessed. The new policy will go into effect for all Optica Publishing Group journals, with the exception of the Journal of Optical Communications and Networking, starting on 1 March 2021 and may be followed voluntarily in the interim.

We strongly encourage authors to make research data associated with their manuscripts publicly available where possible, and to use best practices when selecting data repositories and citing datasets. See DataCite and Optica Publishing Group Supplementary Materials Guidelines for more information. Information about how to access the data underlying the results presented in a paper should be provided in a Data Availability Statement (DAS) and, where possible, datasets should be cited in the reference list.

What to Include?

The DAS should appear in the manuscript immediately after the Disclosures statement. All Optica Publishing Group article preparation templates include a sample DAS.

We have identified four common (sometimes overlapping) situations that authors should use as guidance. These are provided as minimal models, and authors should feel free to include any additional details that may be relevant.

1. When datasets are included as integral supplementary material in the paper, they must be declared (e.g., as "Dataset 1" following our current supplementary materials policy) and cited in the DAS, and should appear in the references.

   Data availability. Data underlying the results presented in this paper are available in Dataset 1, Ref. [3].

2. When datasets are cited but not submitted as integral supplementary material, they must be cited in the DAS and should appear in the references.

   Data availability. Data underlying the results presented in this paper are available in Ref. [3].

3. If the data generated or analyzed as part of the research are not publicly available, that should be stated. Authors are encouraged to explain why (e.g. the data may be restricted for privacy reasons), and how the data might be obtained or accessed in the future.

   Data availability. Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

4. If no data were generated or analyzed in the presented research, that should be stated.

   Data availability. No data were generated or analyzed in the presented research.