Beijing Jinkun Technology Co., Ltdwww.jonkon.com.cn
[Abstract] Introduced microwave technologyFiber optic delay lineThe principle and characteristics of microwave and its applicationFiber optic delay lineA detailed analysis and calculation of the performance (sensitivity, dynamic range, etc.) have been conducted. Currently, microwaveFiber optic delay lineIt has reached a practical level and can be widely applied in the fields of radar and electronic warfare.
keywordsMicrowave fiber delay lineLaser; Photodetector; Signal processing; Radar; electronic countermeasure
TN929; TN97 [Literature Identification Code] A 1006 l 9O8 (2002) 04-0001-05

School of Electron and Inform ation，Shanghai Jiaotong Univ．，Shanghai 200030．China）Abstract： The theory and characteristics of microwave optical fiber delay—line are introduced。 and its perfor—m ance（sensitivity，dynamic range）is analyzed and calculated in detail Today，m icrowave optical fiber delay line has come into practical use and it can be widely used in the fields of radar and electronic counterm easure．
Key words：m icrowave optical fiber delay line；laser； photodetector； signal processing； radar； electronic coun。

0 Preface
Delay line memory.
Delay lines are widely used in fields such as signal processing, radar, and electronic countermeasures. The unit delay device required for signal processing is a type of memory. Delay lines must be present in Moving Target Display (MTI)
In electronic warfare, it is necessary to store signals for a certain period of time before processing them. For example, delaying the reception of the opponent's radar signal for a certain period of time before sending it out completes deceptive interference. Modern science and technology require a variety of signal storage devices. Our main concern is signal storage devices suitable for radar and electronic warfare——Fiber optic delay line.

Radar initially used storage tubes and mercury delay lines, and later adopted quartz delay lines with better performance. After that, superconducting delay lines andFiber optic delay lineAccording to physical concepts, delay lines can be divided into three types:
1) Delay lines for electrical signals, such as charge coupled devices (CCDs) and cables;
2) Ultrasonic delay lines, such as mercury delay lines, quartz delay lines, etc;
3) Optical signal delay line, such asFiber optic delay lineOptical digital synchronous delay line memory.