Fraunhofer HHI Will Present Their All Optical Fibre LiFi System At The Optical Networking and Communication Conference (OFC) 2022
Fraunhofer HHI
Last week, Fraunhoferr HHI released a press statement that they will present their All-Optical-Fibre LiFi System at the Optical Networking and Communication Conference (OFC) 2022. Their All-Optical LiFi System comprises of an Ethernet-coupled central unit, with the modem and the selection combiner, one step-index POF each for up to eight optical front ends, the optical wireless link and a set of USB-LiFi dongles.
They stated the following in their statement:
“Optical wireless communication, also called LiFi, is an interesting alternative for mobile communication via light. LiFi is considered as a promising technology for mobile indoor connectivity where the unlicensed optical spectrum is used. Light is better confined within a room compared to radio and safer against unauthorized access as well as jamming. It is well suited for the use in challenging environments like industrial or medical applications, due to the robustness regarding electromagnetic interferences and the absence of radio radiation.
Since the connection of the LiFi access points can also be a target of interference, Fraunhofer HHI developed an all-optical LiFi system using polymer optical fiber (POF) for networking multiple access points (APs) rather than copper wiring. The use of multiple APs improves coverage and adds spatial diversity to overcome possible blockages of the line-of-sight. Moreover, a new selection combiner is introduced, enabling the deployment of larger numbers of distributed APs with negligible performance loss. The new combiner supports up to eight LiFi access points, allowing for a coverage up to 50 m². In this area, mobile Internet access is possible via the light at Gbit/s data rates for multiple users. The modular approach allows higher flexibility for covering specialty applications, like manufacturing halls and operation theaters, with reliable high-speed wireless connectivity."
Fraunhofer HHI has more than 20 years of experience on indoor LiFi systems and provides compact LiFi modules for immediate industrial prototyping and field tests”.
The Fraunhofer , Heinrich Hertz Institute, HHI, also known as Fraunhofer HHI or Fraunhofer Heinrich Hertz Institute, is an organisation of the Fraunhofer Society based in Berlin. The institute engages in applied research and development in the fields of physics, electrical engineering and computer sciences.
The Fraunhofer Heinrich Hertz Institute develops mobile and stationary broadband communication networks and multimedia systems. Focal points of independent and contract research conducted by Fraunhofer HHI are photonic components and systems, fiber optic sensor systems, and image signal processing and transmission. Future applications for broadband networks are developed as well. Research in this area focuses on 3D displays, UHD panorama video production, human-machine interaction through gesture control, optical satellite communication and data transmission technologies such as visible light communications.
The Optical Networking and Communication Conference (OFC)
The Optical Networking and Communication Conference and Exposition (OFC) is the largest international event for latest advances in telecom and data center optics. The conference includes technical sessions, short courses, workshops, and panel discussions that focus on the newest research and developments as well as the latest applications.
For over 40 years, OFC has drawn attendees from all corners of the globe to meet and greet, teach and learn, make connections and move business forward.
OFC attracts the biggest names in the field, offers key networking and partnering opportunities, and provides insights and inspiration on the major trends and technology advances affecting the industry. From technical presentations to the latest market trends and predictions, OFC is a one-stop-shop.
The OFC 2022 will end on Thursday 10th March 2022
What is LiFi?
Li-Fi, also known as "Light Fidelity" is a wireless optical networking technology, which uses light-emitting diodes (LEDs) to transmit data. In 2011, professor Harald Haas made a LiFi demonstration at the TED (Technology, Entertainment, Design) Global Talk on Visible Light Communication (VLC).
VLC uses light as a medium to deliver high-speed communication like Wi-Fi and complies with the IEEE standard IEEE 802.15.7. The IEEE 802.15.7 is a high-speed, bidirectional, and fully networked wireless communication technology-based standard similar to Wi-Fi's IEEE 802.11.
How does LiFi work?
LiFi is a high speed, bidirectional, and fully networked wireless communication of data using light. LiFi constitutes of several light bulbs that form a wireless network.
When an electrical current goes through to a LED light bulb, a stream of light (photons) emits from the lamp. LED bulbs are semiconductor devices, which means that the brightness of the light flowing through them can change at extremely high speeds. The signal is sent by modulating the light at different rates. The signal can then be received by a detector that interprets the changes in light intensity (the signal) as data. Also when the LED is ON, you transmit a digital 1, and when it is OFF, you transmit a 0.
LiFi Benefits
The primary benefits of LiFi are as follows:
• Security: Provides entirely secure access. Where there is no light there is no data.
• Safety: Does not produce electromagnetic radiation and does not interfere with existing electronic systems.
• Localisation: Allows localisation due to the small coverage area of LiFi access point - localisation can be used for very precise asset tracking.
• Data density: Provides ubiquitous high-speed wireless access that offers substantially greater data density (data rate per unit area) than RF through high bandwidth reuse.
Credit to Signify
LiFi Applications
LiFi can be used for so many applications and the list is increasing every year. You can read our updated list of LiFi applications at the following link:
Credit to pureLiFi
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