HDMI (fiber optic) cable

The following is an introduction to HDMI fiber optic cables:

Structure and principle

• Structure: mainly composed of optical fiber core, photoelectric conversion chip, skin and plug. Fiber core is usually divided into glass fiber and plastic fiber, glass fiber signal loss is low, plastic fiber cost is low. The outer skin is made of 

  material with good flexibility and anti-stretch. The plug is generally made of aluminum alloy and the terminals are mostly nickel-plated.

• Working principle: At the transmitting end, the photoelectric conversion chip converts the electrical signal output by the device into a laser signal, and then transmits it through fiber channel with light as the medium. At the receiving end,

 the optical signal is restored to an electrical signal by the photoelectric conversion chip and input to the display device.

Performance characteristics

• Ultra-long lossless transmission: the optical signal is transmitted in the glass fiber with almost no attenuation, and a single fiber HDMI cable can achieve lossless transmission of more than 100 meters 4K@60Hz, solving the need for 

   long-distance wiring.

• Strong anti-interference ability: Optical fiber cables are not affected by electromagnetic wave and radio frequency interference, and can still keep the picture pure and noise-free in strong electric environment or complex wiring scenes.

• High bandwidth: Support HDMI 2.1 standard products, transmission bandwidth up to 48Gbps, can meet the 8K@60Hz, 4K@120Hz and other high resolution, high refresh rate signal transmission 1.

• Low latency: For esports players, dynamic refresh rate synchronization technology can adjust the transmission rate in real time, which can effectively reduce the input delay and meet the requirements of high frame rate game images.

• Lightweight design: The fiber core diameter is only 1/10 of the copper cable, the wire is softer and thinner, and the common outer diameter is 4-6mm, which can easily pass through the tube buried wall, and can also be bent and wired at a certain Angle.

Application scenario

• Home theater: Long-distance high-definition connections between playback devices and display devices can be realized, such as Blu-ray players and game consoles placed in the living room TV cabinet, and signals are transmitted lossless through fiber

  HDMI to the bedroom projector or a private theater in the basement.

• Commercial display: such as LED screens in large shopping malls, 100-meter level transmission can meet the needs of cross-floor, multi-screen synchronous display, to avoid signal loss caused by multiple devices in series.

• Medical field: operating room 4K endoscope images, MRI nuclear magnetic images are directly connected to the diagnostic screen through fiber HDMI to ensure zero loss of critical details.

• E-competition: the player's first perspective picture is transmitted to the broadcast station through optical fiber, which eliminates the risk of game picture deadlock, supports the transmission of high refresh rate game picture, and provides better game

 experience for players.

Precautions for use

• Pay attention to the direction: The optical fiber HDMI cable is divided into the signal end (Source) and the Display end (Display). The reverse connection will cause failure.

• Connector protection: Preferably metal shell + optical fiber protective sleeve design products, to avoid bending damage to the core.