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AssigneesFraunhofer-Gesellschaft Zur Foerderung Der Angewan, Friedrich-Schiller-Universitaet Jena
InventorsJens Ulrich Thomas, Christian Voigtlaender, Stefan Nolte, César Jáuregui Misas, Fabian Stutzki, Jens Limpert, Andreas Tuennermann
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The invention relates to a transverse mode filter in an optical waveguide (3). The aim of the invention is to produce a transverse mode filter that permits a monolithic construction of a laser in a multi-mode waveguide. To achieve this, according to the invention the filter comprises a Fabry-Perot cavity integrated into the optical waveguide (3) and comprising two reflective elements (5) situated at a distance from one another. In addition, the waveguide (3) is modified in the region of the Fabry-Perot cavity and/or in the region of the reflective elements (5) in relation to the remaining regions of the waveguide with respect to the effective refractive index of at least one mode of the waveguide.
Transverse mode filter in an optical waveguide (3), wherein the filter is comprised of a Fabry-Perot cavity integrated into the optical waveguide, and comprising two reflective elements (5) situated at a distance from one another, wherein the wavelength of at least one mode (8) of the optical waveguide (3) differs from the resonant wavelengths (7) of the Fabry-Perot cavity, whereas the wavelength of at least a second mode (10) of the optical waveguide (3) mainly coincides with a resonant wavelength (9) of the Fabry-Perot cavity.
Application of the Fabry-Perot cavity integrated into an optical waveguide (3), said cavity comprising two reflective elements (5) situated at a distance from one another, as a transverse mode filter, wherein the optical waveguide (3) is modified in the region of the Fabry-Perot cavity and/or in the region of the reflective elements (5) in relation to the remaining regions of the waveguide (3) with respect to the effective refractive index of at least one mode of the waveguide (3).
Dependencies are inferred from the claim text.