From space-wide internet to last-mile connectivity, portable free-space optical communication promises to bridge connectivity gaps on-demand

Optical lenses

For details, read the Gold Open Access article by Liu, Zhang, et al., “High-speed free-space optical communication using standard fiber communication components without optical amplification,” Adv. Photon. Nexus 2(6) 065001 (2023), doi 10.1117/1.APN.2.6.065001.

In a significant technological leap, researchers from Nanjing University (NJU) have developed a miniaturized FSO system that promises to revolutionize high-speed wireless communication. As reported in the Gold Open Access journal Advanced Photonics Nexus (APNexus), this remarkable system achieved an astonishing communication bandwidth of 9.16 gigabytes per second (Gbps) over a 1-kilometer (km) link. What sets it apart is that it accomplishes such high FSO performance using readily available commercial fiber optical communication transceiver modules (no need for optical amplification).

Daneet Steffens SPIE--International Society for Optics and Photonics daneets@spie.org Office: 360-685-5478

T-mount

Norland Optical Adhesive 72. PDF document icon Norland Optical Adhesive 72.pdf — PDF document, 57 KB (59210 bytes). © University of Louisville.

C-mount

The core of this miniaturized FSO system comprises a pair of FSO devices. Each FSO device is compact, measuring just 45 cm × 40 cm × 35 cm, with a weight of 9.5 kilograms and a power consumption of approximately 10 watts. Each houses an optical transceiver module, an acquisition, pointing, and tracking (APT) device, and its control electronics, all safely sealed within a box for rugged outdoor operation. The APT device stands out with its low-diffraction optical design and a highly efficient 4-stage closed-loop feedback control system.

Liquidlensedmund optics

This doesn't make sense to me if the highest magnification of a compound microscope is 1000x. I hear it often said that magnification claims ...

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.

image: A free-space optical communication experiment involves a pair of FSO devices with one (“Alice”) fixed on the top floor of a building, while the other (“Bob”) is loaded on a radio-controlled electric vehicle so that it can move around to vary the distance of the FSO link nodes. Image credit: Liu, Zhang, et al., doi 10.1117/1.APN.2.6.065001. view more

Starting in 1963, HOYA introduced the first anti-reflective coating coating for mineral lenses to the market. 60 years of coating evolution has led us to ...

Aperture diaphragm

Lens mount

A free-space optical communication experiment involves a pair of FSO devices with one (“Alice”) fixed on the top floor of a building, while the other (“Bob”) is loaded on a radio-controlled electric vehicle so that it can move around to vary the distance of the FSO link nodes. Image credit: Liu, Zhang, et al., doi 10.1117/1.APN.2.6.065001.

May 30, 2022 — ... UV LED components (or UV light sources using UV LEDs), to make sure they are actually outputting true 365nm UV light? Many UV LEDs (and light ...

In a world that relies on high-speed internet and seamless communication, the absence of a reliable fiber connection can be a significant hurdle. Fortunately, a cutting-edge technology known as free-space optical communication (FSO) offers a flexible solution for field-deployable high-speed wireless communication in areas where fiber connections are unavailable.

FSO has garnered attention for its versatility across various scales of operation. On a global level, it plays a crucial role in establishing high-speed satellite internet projects like Starlink, ensuring global connectivity. At the ground level, particularly in low-altitude scenarios, FSO shines as an attractive option for last-mile connections, disaster recovery efforts, and military communications.

I would suggest you to take a look at Hi-Link power supply blocks. These are readily available at any hobby shop (atleast they are in India). It ...

The FSO system exhibits remarkable tracking capabilities, through the integration of multiple sensors and sophisticated algorithms, which enable automatic, fast, and highly accurate acquisition and fine tracking in just 10 minutes. This precision keeps the tracking error within an impressive 3 microradians (μrad), resulting in a low average link loss of just 13.7 decibels (dB) over the 1-km link. Such precision also eliminates the need for optical amplification. Remarkably, the FSO system can achieve bidirectional data rates averaging 9.27 Gbps over the 1-km link, using only commercial transceiver modules.

2 is a specification for internal expansion cards on PC motherboards and laptops. M.2 was conceived as a successor of the mSATA interface and for the first time ...

aberration · delusion · eccentricity · strangeness · weirdness. noun as in different from that expected. Compare Synonyms.

s-mountcamera

NAPA Silicone O-Ring Lubricant 4 Oz - NTC 209515: Available online or at your local NAPA Auto Parts store.

The implications of this achievement are profound. This miniaturized FSO breakthrough unlocks the potential for high-speed wireless communication virtually anywhere, making connectivity happen even in the most challenging environments. As we look ahead, these devices are set to play a pivotal role in the future of FSO networks, offering plug-and-play configurations that can establish high-speed FSO channels in minutes. This innovation addresses the growing need for field-deployable, high-speed wireless communication solutions, bridging the connectivity gap in a world where staying connected is more critical than ever.

CS-Mountlens

According to Zhenda Xie, professor at the NJU School of Electronic Science and Engineering and corresponding author for the APNexus article, “This work highlights the potential for achieving FSO using commercially available fiber optical transceiver modules.” Xie notes that the effective distance of 1 km may be extended; his team also tested the optical links at up to 4 km, where the average loss increased to 18 dB – likely due to a foggy test environment. “With better weather conditions and optical amplification, longer FSO can be expected,” Xie concludes.

Dec 22, 2021 — The single mode optical fiber is the best choice for transmitting data over long distances such as 100 km (60 miles) for its low signal ...

The fun way for your kids to learn real science. · 100+ hands-on science kits · 50+ unique digital experiences · One subscription · From $29.90/month.