The first realization of a wavelength-selective switch (WSS) with direct integration of few mode fibers (FMF) is fully described. The freespace 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.
D. M. Marom and J. Dunayevsky and D. Sinefeld and M. Blau and R. Ryf and N. K. Fontaine and M. Montoliu and S. Randel and C. Liu and B. Ercan and M. Esmaeelpour and For full list of authors, see publisher's website., "Wavelength-Selective Switch with Direct Few Mode Fiber Integration," Optics Express, vol. 23, no. 5, pp. 5723-5737, Optical Society of America (OSA), May 2015.
The definitive version is available at https://doi.org/10.1364/OE.23.005723
Electrical and Computer Engineering
Keywords and Phrases
Optical constants; Optics, Direct integration; Few-mode fibers; Free space optics; Modal sensitivities; Phase spatial light modulator; Spectral channels; Spectral information; Wavelength-selective switches, Light modulators
International Standard Serial Number (ISSN)
Article - Journal
© 2015 Optical Society of America (OSA), All rights reserved.
01 May 2015