| Issue |
EPJ Web Conf.
Volume 335, 2025
EOS Annual Meeting (EOSAM 2025)
|
|
|---|---|---|
| Article Number | 03039 | |
| Number of page(s) | 2 | |
| Section | Topical Meeting - Applications of Optics and Photonics | |
| DOI | https://doi.org/10.1051/epjconf/202533503039 | |
| Published online | 22 September 2025 | |
https://doi.org/10.1051/epjconf/202533503039
Polarization-independent total-internal-reflection grism with 95% diffraction efficiency for wavelength selective switches
Department of Precision Instrument, Tsinghua University, Beijing 100084, China
* Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 22 September 2025
Abstract
A polarization-independent reflective grism consists of a polarization-independent total-internal-reflection grating and a prism. It can offer high line density, wide bandwidth and linear dispersion, promising potential application to next-generation wavelength selective switches. We designed and fabricated a grism of a line density of 1710 lines/mm. The average diffraction efficiency for TE and TM polarizations over the C-band (1523-1575 nm) is 95.14%.
© The Authors, published by EDP Sciences, 2025
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