---
title: Grating Uniformity and Pitch Accuracy Validation of DTL-Based Gratings
description: Learn about grating uniformity and pitch accuracy of Displacement Talbot Lithography-based gratings in this test report made in cooperation with Eulitha.
---

[Test reports ](https://www.optofidelity.com/insights/test-reports)

# [Grating Uniformity and Pitch Accuracy Validation of DTL-Based Gratings](https://www.optofidelity.com/insights/test-reports/grating-uniformity-and-pitch-accuracy-validation-of-dtl-based-gratings)

 Written by [OptoFidelity](https://www.optofidelity.com/insights/test-reports/author/optofidelity) | Jun 13, 2024 12:40:46 PM

This test report explores a diffraction grating manufacturing technique by [Eulitha](https://eulitha.com/) and the grating quality validation capabilities by OptoFidelity. The experiments described in the test report involve a grating manufactured with [Displacement Talbot Lithography (DTL)](https://eulitha.com/eulitha_technology/dtl) and its grating quality measurements with [OptoFidelity WG-GAT](https://www.optofidelity.com/en/products/wg-gat) Littrow Diffractometer.

Specific interest is in applying this grating manufacturing method to augmented reality (AR) waveguide applications. AR waveguides are known to require precise manufacturing and strict process control, for which this collaboration study provides demonstrative and quantified results. 

Download the full test report by filling out the form.

[View full post](https://www.optofidelity.com/insights/test-reports/grating-uniformity-and-pitch-accuracy-validation-of-dtl-based-gratings)

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