English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Square-wave pulse generation with a variable duty ratio can be realized withthe help of ideas of Talbot array illuminators formulated for binary phasegratings. A binary temporal phase modulation of CW laser field propagatingthrough a group-delay-dispersion circuit of the fractional Talbot length $P/Q$results in a well defined sequence of square-wave-form pulses. When $P=1$ aduty ratio of the pulses $D$ is $1/2$ for $Q=4$ and $1/3$ for $Q=3$ and 6.Maximum intensity of the pulses doubles and triples compared to the CWintensity for $D=1/2$ and $1/3$, respectively. These pulses can be used forreturn-to-zero laser field modulation in optical fiber communication. For$D=1/3$ extra features between the pulses are found originating from a finiterise and drop time of phase in a binary phase modulation. Similar effect as abenefit of the time-space analogy is predicted for binary phase gratings andinterpreted as gleams produced by imperfect edges of the components of therectangular phase gratings.

Space-time analogy and its application to design schemes borrowed from Fourier optics for processing ultrafast optical signals