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This year, the safe city initiative has gained significant momentum, leading to a surge in the installation of video surveillance systems across the country. As a result, the demand for optical transceivers has also risen substantially. In 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 existing analog monitoring stations is becoming a common trend. Both the high-definition video sector and the optical transmission industry are witnessing a rare opportunity for growth and innovation.
Optical transceivers play a crucial role in video surveillance systems. These devices function as key components in optical communication networks, responsible for converting electrical signals into optical signals and vice versa. They are widely used in telecommunications, power systems, monitoring, industrial control, and video transmission. In the context of surveillance, an optical transceiver typically refers to a device that transmits various types of data, including video, audio, Ethernet, and other information. 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 and 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, demultiplexed, and restored into its original form—whether it's video, audio, or data. This process ensures high-quality transmission with minimal signal degradation.
In contrast, analog optical transceivers work by either amplifying or frequency-modulating the signal before converting it into an optical signal. On the receiving side, the optical signal is converted back to an electrical signal, then demodulated to recover the original image, audio, or data. However, analog systems are more susceptible to environmental interference, suffer from lower transmission quality, and tend to have less stable long-term performance compared to their digital counterparts.
As a result, digital optical transceivers are increasingly being adopted to replace traditional analog systems. Their superior performance and reliability make them ideal for modern surveillance and communication applications. Today, optical transceivers are being widely implemented in various sectors such as highways, transportation, electronics, security, industrial automation, energy, customs, water management, and banking. They are used for transmitting video, audio, data, and Ethernet signals, playing a vital role in enhancing efficiency, safety, and connectivity in these industries.