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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Free-space optical communication (FSO) can achieve fast, secure andlicense-free communication without need for physical cables, making it acost-effective, energy-efficient and flexible solution when the fiberconnection is unavailable. To establish FSO connection on-demand, it isessential to build portable FSO devices with compact structure and lightweight. Here, we develop a miniaturized FSO system and realize 9.16 Gbps FSObetween two nodes that is 1 km apart, using a commercialsingle-mode-fiber-coupled optical transceiver module without opticalamplification. Using our 4-stage acquisition, pointing and tracking (APT)systems, the tracking error is within 3 {\mu}rad and results an average linkloss of 13.7 dB, which is the key for this high-bandwidth FSO demonstrationwithout optical amplification. Our FSO link has been tested up to 4 km, withlink loss of 18 dB that is limited by the foggy weather during the test. LongerFSO distances can be expected with better weather condition and opticalamplification. With single FSO device weight of only 9.5 kg, this resultarouses massive applications of field-deployable high-speed wirelesscommunication.

High speed free-space optical communication using standard fiber communication component without optical amplification