Wavelength-selective switch with direct few mode fiber integration

D. M. Marom, J. Dunayevsky, D. Sinefeld, M. Blau, R. Ryf, N. K. Fontaine, M. Montoliu, S. Randel, C. Liu, B. Ercan, M. Esmaeelpour, S. Chandrasekhar, A. H. Gnauck, S. G. Leon-Saval, J. Bland-Hawthorn, J. R. Salazar-Gil, Y. Sun, L. Grüner-Nielsen, R. Lingle

Research output: Contribution to journalArticlepeer-review

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Abstract

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.

Original languageAmerican English
Pages (from-to)5723-5737
Number of pages15
JournalOptics Express
Volume23
Issue number5
DOIs
StatePublished - 2015

Bibliographical note

Publisher Copyright:
©2015 Optical Society of America.

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