Couplers are key components in an optical fiber Fourier transform spectrometer (FFTS).
光纤耦合器是全光纤傅里叶变换光谱仪(FFTS)的关键元件。
The paper summarizes research results of the Fractional Frequency Transimission System (FFTS).
总结了对新型输电方式——分频输电系统的研究情况。
The intermediate result of FFTs is saved to disk in blocks, which optimizes the interconverting of row and column.
提出了以分块的方式存储二维FFT运算的中间结果，大幅提升行列转置时文件读写的效率。
Zero-padded FFTs are about 3-4% faster. All our tests use Zero-padded FFTs so everyone should see a modest speed boost.
补零傅立叶变换加速了大约3-4个百分点。我们所有的测试都使用了补零傅立叶变换，所以所有人都应该能感受到一定的速度提升。
This modification on FFTS not only makes spectral range wider, improves the measurement veracity, but also lowers the FFTS′s demands for couplers.
采用此修正方法不但拓宽了FFTS的工作带宽，提高了其测量准确性，而且降低了FFTS对光纤耦合器传输特性的要求。
The spectrum of ASE broadband light source was measured by FFTS system, and the experiment result agrees with that tested by grating spectrometer.
利用该FFTS系统测量了ASE宽带光源的光谱，并将测量结果和光栅光谱仪测量结果进行了对比，结果表明两者所测ase光谱线型一致。
In this thesis, a new cyclo converter with the delta connection is applied in the FFTS, which can simplify the connection and decrease the number of bridge circuits by 50%.
本文将一种三角形联接方式的交交变频器应用于分频输电系统中，这种接线方式的交交变频换流站的优点是接线方式简单，整流桥数量减少50%。
Constant geometry FFTs are kept constant flow diagram from pass to pass, which can simplify some programs or hardware design and modularize array or pipeline FFT processors.
定常结构FFT的每级流图均具有相同的流图结构，因而易于编程，在FFT硬件处理器中使控制器得到简化，同时使阵列处理器和流水线处理器易于实现模块化。
According to the coupled-mode theory, the impacts of fiber couplers transmission characteristics such as splitting ratio and additional loss, on the veracity and bandwidth of FFTS are analyzed.
根据耦合模理论，分析了光纤耦合器的分束比、附加损耗等传输特性对FFTS的工作带宽和测量准确性的影响。
According to the coupled-mode theory, the impacts of fiber couplers transmission characteristics such as splitting ratio and additional loss, on the veracity and bandwidth of FFTS are analyzed.
根据耦合模理论，分析了光纤耦合器的分束比、附加损耗等传输特性对FFTS的工作带宽和测量准确性的影响。
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