Optical fiber delay line technology and its application in communication systems
1. The meaning of fiber optic delay line
Optical fiber delay line is a device that uses the principle of optical signal propagation in optical fiber to delay the signal. It consists of basic structures such as fiber optics, modulators and controllers. As a transmission medium, optical fiber transmits signals by reflecting or refracting optical signals on the inner wall, thereby achieving signal delay.
2. Features
small size
Large delay bandwidth product
Strong anti-electromagnetic interference ability
High sensitivity and signal interception capability
3. Application scenarios
radar system
optical computer system
electronic countermeasures
Optical fiber communication system
Signal encoding and caching
4. Application of optical fiber delay line in the field of Optical switch
Optical switch refers to the technology of controlling and switching optical signals in optical communications. It allows optical signals to switch between different paths, enabling multiplexing and interaction. This technology is commonly used in fiber optic networks and data centers to increase the efficiency and flexibility of data transmission. The optical switch-based optical fiber delay line selects different optical paths through the optical switch to achieve different time delays. The basic principle is to achieve different delays by changing the optical path. It is a typical discrete optical fiber delay line. The modulated optical signal is transmitted through the optical fiber, and the optical switch array selects the optical path that generates the corresponding delay. By opening this optical switch and ensuring that the other optical switches are closed, the required delay can be achieved.
(1) System integration: Fiber optic delay lines can be used in conjunction with Optical switch technology. For example, in Optical switch networks, delay lines can be used to precisely control the transmission timing of signals to ensure that the signals can be smoothly switched to the correct output path.
(2) Signal processing: In the Optical switch system, the introduction of optical fiber delay lines can be used to process the signal time difference during transmission, thereby improving the overall performance of the network. Reasonable delay can reduce multipath interference and improve signal quality.
(3) Application scenarios: In some advanced optical communication systems, such as quantum communication and photonic integrated circuits, fiber delay lines and Optical switch technologies can work together to achieve efficient signal processing under high bandwidth and low delay requirements.
Hirundo can provide customers with optical fiber delay line solutions in 1310/1550nm, 1060nm and 840nm bands, with a delay range of 0 - 500 ps, supporting single-mode and polarization-maintaining optical fibers.
