Publications by authors named "Nadezhda Pavlycheva"
In this paper, we evaluate the application of curved detectors and freeform optics technologies for fiber Bragg gratings (FBGs) interrogation monitors design. It is shown that, in a high-dispersion spectrograph scheme, the camera part operates in special conditions, which result in a field curvature change. This field curvature can be compensated by the use of a curved detector.
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- The article discusses a model for a spectrograph using a series of volume-phase holographic gratings to achieve continuous wavelength detection with high spectral resolution and throughput.
- It highlights challenges in managing cross-talk between gratings and stray light, which are critical for accurate measurements.
- The testing showed impressive results with a throughput of up to 53% and minimal issues with cross-talk or ghost images, even when using common holographic materials.