期刊
OPTICS EXPRESS
卷 23, 期 5, 页码 5723-5737出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.23.005723
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资金
- European Community [619732]
- IT R&D program of MSIP/IITP, Republic of Korea [10043383]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10043383] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The first realization of a wavelength-selective switch (WSS) with direct integration of few mode fibers (FMF) is fully described. The free-space optics FMF-WSS dynamically steers spectral information-bearing beams containing three spatial modes from an input port to one of nine output ports using a phase spatial light modulator. Sources of mode dependent losses (MDL) are identified, analytically analyzed and experimentally confirmed on account of different modal sensitivities to fiber coupling in imperfect imaging and at spectral channel edges due to mode clipping. These performance impacting effects can be reduced by adhering to provided design guidelines, which scale in support of higher spatial mode counts. The effect on data transmission of cascaded passband filtering and MDL build-up is experimentally investigated in detail. (C) 2015 Optical Society of America
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