【摘要】 为了解决利用普通电线传输数据引起杜瓦瓶内温度升高的问题,针对致冷型焦平面工作时的低温、低功耗、高速和小体积要求,研究了将焦平面数据向杜瓦瓶外传输的光学传输方法．讨论了空间光调制以及激光传输方法在光传输上的应用,设计了相应的方案,并指出了其优缺点．实验表明,空间光调制方法具有高速并行信息传输的特点,数据传输率可达到24Gbps,但结构设计较为复杂,所需功耗大;激光传输为串行传输,数据传输率可达到2Gbps,功耗一般在百毫瓦左右,结构简单,体积小,是一种更实用的焦平面数据传输方法．更多还原

【Abstract】 To solve the problem that ordinary electrical wires used in dewar can easily lead to the increase of temperature, the optical transmission methods for transmitting the data from a focal plane to the outside of the dewar are studied according to the operation requirements of low temperature, low power consumption, high speed and small volume for cooled focal planes. The application of spatial light modulation and laser transmission methods in optical transmission are discussed, the corresponding schemes are designed and their advantages and shortcomings are pointed out. The experimental results have shown that the spatial light modulation method has the features of high speed and parallel transmission with a data transfer rate of up to 24Gbps, but its structure design is more complicated and higher power consumption is required. The laser transmission is a serial transmission with a data transfer rate of up to 2Gbps. It needs only a power consumption of 100mW and its structure is small and simple. So, the laser transmission method is a more practical data transfer method for cooled focal planes.更多还原