free space optics

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free space optics

A high-speed optical wireless communication system that transmits light pulses through the air using infrared lasers. Requiring line of site, free space optics (FSO) provides point-to-point and point-to-multipoint transmission without requiring a government license for use of the spectrum.

Because weather conditions such as fog can reflect light signals, redundant paths can be created by sending multiple signals to reflectors on different buildings. Transmitters with multiple beams are also used to provide greater reliability.

In time, free space optics is expected to be used for short distances within high-speed buses in computers and switches, perhaps even within the chip itself. See visible light communication.

Multi-Beam FSO Transceiver
This FlightSpectrum unit transmits 1.25 Gbps up to 3,000 meters and sends multiple beams for greater reliability. Approximately 1x1x2 feet in size, it connects to single mode and multimode fiber. (Image courtesy of Lightpointe,
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References in periodicals archive ?
Caption: Marines with 7th Communication Battalion, III Marine Expeditionary Force Information Group, lift up a tactical elevated antenna mass mounted with the free space optic system at Camp Hansen, Okinawa, Japan, Aug.
A Novel wireless architecture for WLAN based on Radio over Free Space Optics technology and its spectrum assignment function.
The Canon Free Space Optics is a bi-directional optical beam transceiver designed to be capable of transmitting a data rate of 156 Mbps over a planning range of 2000 meters.
The Terabeam Elliptica series provides carrier-grade, network-ready free space optics (FSO) connectivity at Fast Ethernet (100 Mbps) and OC-3/STM-1 (155 Mbps) capacities by sending an invisible, eye-safe beam of laser light through the air, from rooftops, through windows, or from cell towers to another such location.
Terabeam's first deployment as part of the project is a 400 meter free space optics link connecting two Department of Energy sites in Washington, D.C., a link that is now operating.
The Kauai-based company spun off from its parent, Trex Enterprises Corp., in 2001 when executives realized that the radio-wave transceivers Trex had built to support its Free Space Optics technology had greater potential than the technology it had been designed to support.
Outside of the building, we rely on a dualay redundancy system that transfers data using free space optics (FSO) and 60 GHz broadband fixed-wireless radios from one building on the loop to the next."
Pozo noted that several members of the audience could potentially help Quandela enter these markets--such as those from PIC foundries, packaging specialists, and free space optics companies --demonstrating how almost every area of photonics is linked and that networking opportunities in the photonics industry are so important.
By combining Free Space Optics (FSO) and E-Band RF technology with intelligent traffic management, the Santa Clara, California-based company, founded in 2014, is pioneering next generation over-the-air solutions that deliver unprecedented speed, range, and cost efficiency, enabling and accelerating technology to take a leap forward.
Founded in 1998, LightPointe has established a long record of innovation in 60 GHz and 80 GHz radios, and Free Space Optics laser bridges.