Experimental Comparison of Adaptive Optics Algorithms in 10-Gb/s Multimode Fiber Systems
- 13 November 2009
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Journal of Lightwave Technology
- Vol. 27 (24) , 5783-5789
- https://doi.org/10.1109/jlt.2009.2036683
Abstract
We experimentally compare various adaptive algorithms that use a spatial light modulator (SLM) to compensate modal dispersion in 50- $\mu$m graded-index multimode fibers. We show that continuous-phase sequential coordinate ascent (CPSCA) gives better bit-error-ratio performance than 2- or 4-phase sequential coordinate ascent, in concordance with simulations in . We then evaluate the bandwidth characteristics of CPSCA, and show that a single SLM is able to simultaneously compensate the modal dispersion in up to 9 wavelength-division-multiplexed 10-Gb/s channels, spaced by 50 GHz, over a total bandwidth of 450 GHz. We also show that CPSCA is able to compensate for modal dispersion in fibers up to 2.2 km long, even in the presence of midspan connector offsets up to 4 $\mu$m (simulated in experiment by offset splices). A known non-adaptive launching technique using a fusion-spliced single-mode-to-multimode patchcord is shown to fail under these conditions.Keywords
This publication has 10 references indexed in Scilit:
- Compensation of Multimode Fiber Dispersion Using Adaptive Optics via Convex OptimizationJournal of Lightwave Technology, 2008
- 10$\, \times\,$10 Gb/s DWDM Transmission Through 2.2-km Multimode Fiber Using Adaptive OpticsIEEE Photonics Technology Letters, 2007
- Transmission of 10-Gb/s and 40-Gb/s Signals over 3.7 km of Multimode Fiber using Mode-Field Matched Center Launching TechniquePublished by Institute of Electrical and Electronics Engineers (IEEE) ,2007
- Compensation for multimode fiber dispersion by adaptive opticsOptics Letters, 2005
- Equalization of modal dispersion in multimode fiber using spatial light modulatorsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Principal modes in multimode waveguidesOptics Letters, 2005
- Integrated transversal equalizers in high-speed fiber-optic systemsIEEE Journal of Solid-State Circuits, 2003
- Demonstration of 10-Gb/s transmissions over a 1.5-km-long multimode fiber using equalization techniquesIEEE Photonics Technology Letters, 2002
- Fiber‐Optic Communication SystemsPublished by Wiley ,2002
- MEMS spatial light modulators with integrated electronicsPublished by SPIE-Intl Soc Optical Eng ,2001