Correction for phase-shift deviation in a complex Fourier-transform integrated-optic spatial heterodyne spectrometer with an active phase-shift scheme.
Correction for phase-shift deviation in a complex Fourier-transform integrated-optic spatial heterodyne spectrometer with an active phase-shift scheme.
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DOI：
10.1364/ol.36.001044
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发表时间：
2011-04
期刊：
影响因子：
3.6
通讯作者：
K. Takada;Hirotaka Aoyagi;K. Okamoto
中科院分区：
文献类型：
--
作者：
K. Takada;Hirotaka Aoyagi;K. Okamoto
我们报道了采用有源相移方案的平面波导空间外差光谱仪（SHS）可以检索光谱，其中相移分布在π/2附近。用一个自由光谱范围为625 GHz的32个交错马赫-曾德尔干涉仪的SHS实验证实了这一点。相对于π/2 rad的目标，相移范围为0.71 ~ 2.2 rad。
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 π/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 π/2 rad.