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. It also can send much higher resolutions up to 8K at these distances due to the high data throughput of fiber.
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 Light-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 with baluns you have a total of eight connections:
- x4 HDMI connections - video source to sender balun and receiver balun to display.
- x2 RJ45 connections - transmitter balun to receiver balun.
- x2 power connections - from baluns to power outlets.
That's eight possible things that can get unplugged, plugged in the wrong way, or become defective. With the Light-Link you only have one cable that can be easily verified end to end. Troubleshooting is incredibly easy compared to any other setup.
- 48 Gbps
- 8K @ 60Hz
- 4K @120Hz
- HDMI 2.1
- HDCP 1.4/2.0/2.2
- Compatible with ARC and CEC
- Operating Temperature -20℃ to 80℃ ± 5℃
- Recommended minimum bend radius is about 4 cm when not under tension or about 8 cm when under tension.
Shipment was prompt, wish they had red flag warnings about polarity.
Had an issue with tv freezing up fro time to time. I replaced the cable with another Sewell cable and it works fine now. I am not sure why I had this issue with the fiber cable.
Original cable would not display 4k 120hz from Nvidia 3090 Ti to new LG 4K TV. Contacted support and they responded quickly and sent me a replacement even though it was over a year old. They said the cable was defective after testing. New cable replacement had the same issue.
Customer service remained very responsive and actually refunded me my money even over a year after purchase. Nothing but positive to say about their customer service. Cable on the other hand is not performing to spec. Avoid the cable. 1 star rating is for the cable, not their service.
Ordered another brand of cable with same advertised specs and features and it worked great.
We're so sorry our cable didn't meet your expectations! We're glad we were able to help you and that you had a great experience with our customer service. Please feel free to reach out if there's anything else we can do to help!
I run this cable close to 50ft from my sound bar to a 4K projector with absolutely no lag. Great product.
This fiber optic HDMI cable enabled us to remove an old setup that required multiple converters on both ends because of the length of the run. It also now allows us to have much higher resolution from our projector. Great product!!