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

To meet the requirements of time-frequency networks and enable frequencydownloadability for nodes along the link, we demonstrated the extraction ofstable frequency signals at nodes using a mode-locked laser under the conditionof 100 km laboratory fiber. The node consists of a simple structure thatutilizes widely used optoelectronic devices and enables plug-and-playapplications. In addition, the node can recover frequency signals with multiplefrequencies, which are useful for scenarios that require different frequencies.Here, we experimentally demonstrated a short-term frequency instability of$2.83\times {{10}^{-13}}$@1 s and a long-term frequency instability of$1.18\times {{10}^{-15}}$@10,000 s at the node, which is similar to that at theremote site of the frequency transfer system. At the same time, frequencysignals with different frequencies also achieved stable extraction with thesame performance at the node. Our results can support the distributedapplication under large-scale time-frequency networks.

Node-downloadable frequency transfer system based on a mode-locked laser with over 100 km of fiber