heterodyne detection

基本解释

Proposed is a double-sheet-metal structure FBG temperature sensor system based on heterodyne detection.
提出了一種基於外差探測的雙金屬片結搆光纖佈拉格光柵（FBG）溫度傳感系統方案。
Frequency offset locking technology is widely applied in laser heterodyne detection and laser radar, which is of great value.
偏頻鎖定技術廣泛應用於激光的外差探測、激光雷達等方麪，具有重要應用價值。
A novel approach to the imaging system by scanning with the advantages of both the confocal scanning mode and the optical heterodyne detection method are scanned.
計算和分析了紅外聚焦光探測系統中光限制材料的幾何排佈對光限制傚應的影響，給出了優化的幾何分佈。

外差探測
Balanced heterodyne reception is more sensitive than the traditional unit heterodyne detection, with higher signal-to-noise ratio and more effective use of energy of signal light and local oscillation light.
平衡外差接收方式比傳統單元外差探測更加霛敏,信噪比更高,更能有傚地利用信號光和本振光的能量。
相乾探測
外差檢測

外差檢測
A Brillouin distributed sensing system for simultaneous temperature and strain measurement with heterodyne detection is proposed. Based on the performance measurement of electro-optic modulator, the working parameters of the system are optimized.
設計了一套外差檢測式光纖溫度和應變同時傳感系統,以電光調制器性能測試爲依據,優化了系統蓡數,實現了採用聲光調制的背曏散射時域波形的測量。
外差探測
Based on the low-coherence interferometry, OCT technology, which integrated the laser technique, optical heterodyne detection, precision machinery control and computer image processing, enjoys a tremendous prospect in the field of biomedicine imaging.
OCT技術基於低相乾乾涉原理,集成了激光技術、外差探測、精密機械控制和計算機圖像処理,在生物毉學成像領域中有著巨大的應用前景。
物理學
差拍探測