Multimode Optical System
AssigneeDraka Comteq B.V.
InventorsAsghar Gholami, Denis Molin, Pierre Sillard, Yves Lumineau
Life of this patent
Estimating the term…
Abstract
Disclosed is an optical system including a polychromatic optical source emitting multiple transverse modes, an optical link having at least one portion of multimode optical fiber, and an optical device positioned between the optical source and the input of the multimode optical fiber. The optical device can modify the distribution of the energy coupling of the transverse modes emitted by the source in the propagation modes of the multimode optical fiber. The optical system makes it possible to use low-cost transverse multimode optical sources for producing high-bandwidth Ethernet transmission networks having excellent performance.
Claims16
An optical system, comprising:
- a polychromatic optical source for emitting an optical signal comprising a plurality of transverse modes of distinct transverse mode order;
- an optical link comprising at least one portion of multimode optical fiber;
- and
- an optical device positioned between said polychromatic optical source and an input of said multimode optical fiber;
- wherein, said optical device is suitable for spatially re-arranging the plurality of transverse modes dependent on the transverse mode order for coupling the energy of each of the transverse modes into a suitable propagation mode for at least partially compensating modal dispersion of said optical link with chromatic dispersion.
A method of transmitting an optical signal, comprising:
- emitting from a polychromatic optical source an optical signal having a plurality of transverse modes of distinct transverse mode order;
- re-arranging the plurality of transverse modes of the optical signal dependent on the transverse mode order to couple the energy of the transverse modes into propagation modes, wherein the re-arranging is performed such that modal dispersion of an optical link is at least partially compensated by chromatic dispersion due to the re-arranging of the transverse modes of the optical signal over the propagation modes of the optical link;
- and
- introducing the optical signal to the input of the optical link.
Dependencies are inferred from the claim text.