Reduction of crosstalk in a colourless multicasting LCOS-based wavelength selective switch by the application of wavefront encoding

Reduction of crosstalk in a colourless multicasting LCOS-based wavelength selective switch by the application of wavefront encoding
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通过应用波前编码减少基于 LCOS 的无色组播波长选择开关中的串扰

DOI:
10.1117/12.907281
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发表时间:
2012
期刊:
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影响因子:
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通讯作者:
Robertson B
Robertson B
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作者:
Robertson B

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为了优化基于纯位相液晶硅基空间光调制器的波长选择开关的设计,并减轻串扰,我们提出使用一种称为波前编码的技术,该技术涉及到在光学系统中有目的地建立波前误差。在674 nm处进行的实验结果表明,与标准傅里叶变换相比,基于散焦的波前编码可以将最坏情况下的串扰降低10d B。在WSS的情况下,我们建议使用基于散光的波前编码。
To optimise the design of a wavelength selective switch based on a phase-only liquid crystal on silicon spatial light modulator and mitigate crosstalk, we propose using a technique referred to as wavefront encoding that involves purposefully building a wavefront error into the optical system. Experimental results taken at 674nm are presented that show wavefront encoding based on defocus can reduce the worst case crosstalk by >10dB compared to a standard Fourier transform set-up. In the case of the WSS we propose using wavefront encoding based on astigmatism.
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影响因子: --
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