Compensation for multimode fiber dispersion by adaptive optics.

TitleCompensation for multimode fiber dispersion by adaptive optics.
Publication TypeJournal Article
Year of Publication2005
AuthorsShen, X, JM Kahn, and MA Horowitz
JournalOptics Letters
Start Page2985
Pagination2985 - 2987
Date Published11/2005

Adaptive optics is used to compensate for modal dispersion in digital transmission through multimode fiber (MMF). At the transmitter, a spatial light modulator (SLM) controls the launched field pattern. An estimate of intersymbol interference (ISI) caused by modal dispersion is formed at the receiver and fed back to the transmitter, where the SLM is adjusted to minimize ISI. Error-free transmission of 10 Gbit/s non-return-to-zero signals through standard 50 microm graded-index MMFs up to 11.1 km long is demonstrated. It is shown that a single SLM can compensate for modal dispersion across a 600 GHz bandwidth.

Short TitleOptics Letters