With the continuous maturity of communication industry technology, the distance of fiber optic network transmission is also gradually extended. Do you know what factors affect the transmission distance of optical transceivers?
1, light source
The quality of the conversion of photoelectric signals by an optical transceiver largely depends on its internal light source. Usually, higher light sources can provide greater transmission distance because optical signals can reduce attenuation during transmission. The light source in the optical transceiver usually uses LED (light emitting diode) or laser diode. It should be noted that their quality directly affects the transmission distance of optical signals.
2, Dispersion
Fiber dispersion refers to the frequency distortion that occurs when optical signals are transmitted in optical fibers. The main reason for dispersion is that optical signals of different frequencies have different propagation speeds during the propagation process, resulting in different arrival times at the receiving end, resulting in pulse broadening and ultimately inability to distinguish signal values. Using techniques to suppress dispersion, such as fiber dispersion compensation modules, can increase transmission distance.
3, Loss
Fiber loss is the attenuation of optical signals during transmission in optical fibers. Loss refers to the loss of optical energy caused by the absorption, scattering, and leakage of the medium during the transmission of light in optical fibers. This energy is dissipated at a certain rate as the transmission distance increases. Fiber loss includes various forms of loss, such as absorption loss, scattering loss, and bending loss. Lower fiber loss can support longer transmission distances.
4, Transmission rate
The transmission rate refers to the speed at which optical transiceivers transmit data. Higher transmission rates require higher light source power and lower losses to support longer transmission distances.
5, Attenuation compensation
As the transmission distance increases, the intensity of the optical signal gradually weakens. To compensate for attenuation during transmission, devices such as optical amplifiers or repeaters can be used to enhance the strength of the signal, thereby supporting longer transmission distances.
6, Environmental
Environmental factors such as temperature, humidity, and air pressure can also affect the transmission distance. High temperature, high humidity, and high air pressure may exacerbate the attenuation and dispersion of optical fibers, thereby limiting transmission distance.
