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Correction for phase-shift deviation in a complex Fourier-transform integrated-optic spatial heterodyne spectrometer with an active phase-shift scheme

机译:带有有源相移方案的复杂傅里叶变换集成光学空间外差光谱仪中相移偏差的校正

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摘要

We report that a spectrum can be retrieved with a planar waveguide spatial heterodyne spectrometer (SHS) incorporating an active phase-shift scheme, where the phase shifts are distributed around pi/2. This was confirmed experimentally with an SHS that had 32 interleaved Mach-Zehnder interferometers and whose free spectral range was 625 GHz. The phase shifts ranged from 0.71 to 2.2 rad against the target of pi/2rad.
机译:我们报告说,可以使用包含有效相移方案的平面波导空间外差光谱仪(SHS)来检索频谱,其中相移围绕pi / 2分布。 SHS具有32个交错的Mach-Zehnder干涉仪,其自由光谱范围为625 GHz,这在实验上得到了证实。相对于pi / 2rad的目标,相移范围为0.71至2.2 rad。

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