Heavy Duty PU Casters,Brake Caster Wheels,heavy duty caster wheels BENYU CASTERS & WHEELS CO.,LTD , https://www.benyucaster.com
This year, the safe city initiative has gained significant momentum, leading to a surge in the installation of video surveillance systems. As a result, the demand for optical transceivers has also risen substantially. During the first half of the year, the company's optical transceiver shipments remained strong. With the advancement of high-definition video technology and growing public awareness of security, digital high-definition video is gradually replacing traditional analog systems. The nationwide upgrade of analog monitoring systems is becoming an inevitable trend. Both the high-definition video and optical transmission industries are witnessing a rare opportunity for growth.
Optical transceivers play a crucial role in video surveillance systems as key components of optical communication networks. They are primarily responsible for converting electrical signals into optical signals and vice versa, enabling efficient data transmission. These devices are widely used across various sectors such as telecommunications, power, industrial control, and video transmission. In the context of surveillance, an optical transceiver typically refers to a device that handles the transmission of video, data, Ethernet, and audio signals. There are two main types: analog and digital optical transceivers. Additionally, they can be categorized based on the type of fiber used—single-mode or multi-mode.
Digital optical transceivers convert image, voice, and data signals into digital formats, then multiplex them into a single high-speed signal before transmitting it as an optical signal. At the receiving end, the optical signal is converted back into an electrical signal, which is then demultiplexed into its original low-speed components. Finally, these signals are restored into images, audio, and data. In contrast, analog optical transceivers modulate the signal—either through amplitude, frequency, or phase modulation—before converting it into an optical signal. On the receiving side, the optical signal is converted back to an electrical signal and demodulated to retrieve the original information.
Digital optical transceivers offer superior signal quality compared to their analog counterparts. They avoid the issues associated with analog transmission, such as environmental interference, poor long-term stability, and signal degradation over distance. As a result, digital optical transceivers are increasingly replacing analog ones. Today, they are being widely adopted in various fields including highways, transportation, electronics, security, industrial automation, power, customs, water management, and banking. Optical transceivers are now essential for transmitting video, audio, data, and Ethernet signals efficiently and reliably.