The Light-Link is an "HDMI over Fiber" cable that sends the video information through optical fiber. Because it uses fiber, it can send the signal instantly with no perceptible latency at longer distances than regular copper HDMI cables.
How it Works
The converters inside the cable heads convert incoming electrical signal into optical on one end, and back into electrical on the other end. The Ligh-Link is composed of fiber cables and copper cables. The copper cables are used for non-video information such as hot plug detection, grounding, and +5v power. The fiber strands carry all the video information.
The light travels down the fibers using internal reflection, which allows the light to bounce off the cable walls similar to a bobsled. Light travels extremely fast (186,000 miles a second) so the signal arrives almost instantly without losing any quality.
Better than copper
According to HDMI.org "The longest HDMI cable runs seen to date have been achieved using fiber-optic cable, which is far less susceptible to attenuation and interference than copper. Electrically it is similar to an active cable or Cat 5/6 solution, the principal difference being the higher-quality optical cabling between the transmit and receive connectors. HDMI over fiber is a highly robust solution, effective in cable runs up to 100 meters or more."
Easier than any HDMI extender
Since the optical converters are housed inside the heads of the cable, there is no need for any external repeaters. This also means that there is no need for extra power adapters or patch cables.
The Light-Link eliminates possible points of failure. In a typical HDMI extender setup you have four HDMI connections (source to sender and receiver to display) plus two RJ45 connections, and two power connections from the baluns to the wall.
That's eight possible things that can come unplugged, plugged in the wrong way, worn out over time or just need to be stuffed somewhere out of sight. With the Light-Link you only have one cable connected directly and can be easily verified end to end. Troubleshooting is incredibly easy compared to any other setup.
Mfg. Part Number
- Link by Sewell
- Length: 45m (150ft)
- 4K @ 60Hz 4:4:4
- HDMI 2.0
- HDCP 1.4/2.2
- Compatible with ARC and CEC
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