Before you get further knowledge of this definition, the question of “what does HDMI stands for? ”may pop up in your brain. HDMI stands for High Definition Multimedia Interface and is frequently used for transferring both HD digital audio and video information over a single cable. 

Optical HDMI Cable, also called HDMI AOC（Active Optical Cable), is a kind of HDMI cable that uses optical fiber to achieve HDMI definition signal transmission and its photoelectric conversion lines are integrated at the interface. Optical fiber is a transmission medium used to transmit optical signals; Unlike the conventional copper HDMI cables, optical HDMI cables adopt optical fiber as a transmission medium and features an HDMI interface at both ends.

2.Distinct Advantages of HDMI AOC

• Less Signal attenuation

The long-distance signal transmission attenuation(signal loss) over optical fiber HDMI AOC cable is almost zero due to the photoelectric conversion technology, and the long-distance transmission can reach 500 meters.

Signal transmission on copper HDMI cables exceeding 7.5 meters is prone to signal degradation due to the difference of the copper cable attenuation parameters. For devices like projectors and surveillance video equipment, data transmission over copper HDMI cables will lead to poor experience of ultra-clear HD definition equipment. However, with optical HDMI cables, users do not have to worry about these problems at all, and problems like attenuation and distortion of the transmitted signal will never trouble you.

• Extended Transmission Distance

At present, the common working method of optical fiber HDMI cable in the market is that copper cable electronic wire is for the low-speed signal transmission and the optical fiber is for high-speed data transmission. In this method, A transmission length problem is inevitably exists triggered by the drawback of copper HDMI cables. Optical fiber transmits high-speed data by converting the original electrical signal into an optical signal and the so-called attenuation can be neglected or even doesn’t exist at all. The longest transmission distance could reach over 300m.  This feature is particularly important for home theaters because even for living room theaters, the embedded HDMI cable is at least 10 meters or more.

• Good Anti-EMI Performance

The optical fiber HDMI AOC cable transmits optical signals including high-definition signals up to Ultra HD 4K/60p and is not subject to external electromagnetic interference. It can achieve true and flawless digital optical audio and ensure high fidelity of transmission. Digital signal transmission through optical fiber HDMI AOC, cables especially for audio with high transmission material requirements, can bring you an amazing experience both on hearing and viewing with the ultra-low background noise and flawless sound, making you feel like sitting in a cinema and enjoying Hollywood films.

• Wider Application

The optical fiber HDMI cable has been updated to HDMI2.0 standard, which makes it directly transmit 4K 60FPS ultra-clear signals without being affected by distance. Therefore, the optical HDMI cables are able to function in various situations that high-definition digital video display equipment, and large-area cabling infrastructure connection are required. These situations include home theater, remote information release systems, radio and television control, public security high-definition monitoring systems, high-definition video conference office, large-scale medical imaging systems, industrial automation systems, etc.

3. Other Features

Because the optical fiber HDMI cable is made up of optical fiber material, it is smaller and lighter than the conventional HDMI cable. Also, HDMI AOC(Active Optical Cable) supports higher bandwidth and transmits high-resolution audio like DTS-HD quality audio and can even transmit HD videos without compressing them. You don’t have to worry about whether it can transmit a high-bandwidth of 4K video and 3D video signal.

In fact, fiber optic HDMI cables have many unrivaled advantages compared with copper HDMI cables, such as strong corrosion-resistance, perfect radiation resistance, good wind-ability, no sparks, small leakage, strong

 confidentiality, etc., Thus, fiber optical HDMI AOC can even work perfectly in special environments like military areas.

4. When Should You Use Fiber Optic HDMI?

Some may have a question like “Do I need to use an optical cable with HDMI?”

Generally, it is the best transmission solution to connect most modern audiovisual devices, assuming each device has an HDMI port! The optical HDMI cable transmits the digital video and audio signals with high-performance and low-power in a variety of your devices like multimedia, DVD player, computer, HDTV, projector.

The HDMI 2.1 specification defines an ultra-high-speed HDMI cable (UHS Cable), which supports a bandwidth high transmission speed of up to 48 Gigabits per second, and is designed to ensure support for HDMI2.1 functions, including uncompressed 8K@60Hz and 4K@120Hz. However, when the distance is over 3 meters, you need a power supply to drive the signal transmission in order to meet the specification of HDMI 2.1.  If the distance exceeds 5 meters, copper HDMI cable would not meet the demand either. Therefore, an HDMI Active Optical Cable can solve the problem perfectly in such instances.

To make it brief, if you only need a two to three-meter long HDMI cable, an optical HDMI cable is optional, for a conventional HDMI cable can meet your demand. However, when the transmission distance is more than 10 meters, an optical HDMI AOC cable may be on the first spot of your priority list to enjoy the quality surround sound.

5.Conclusion

The conventional HDMI cable is subject to signal attenuation, making it difficult to meet the 18Gbps high-bandwidth transmission requirements. But the HDMI optical fiber cable does not need to worry about the transmission bandwidth at all, and you can enjoy the quality DTS HD master audio and colorful high-definition picture. Based on the analysis of optical fiber HDMI cable, it can be inferred that optical fiber HDMI AOC will become a necessary solution for HD data transmission in the future.

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