摘要:
The invention relates to an optical waveguide comprising at least one core region (1) extending along the longitudinal extension of the optical waveguide and a first jacket (2), which surrounds the core region (1), as viewed in the cross-section of the optical waveguide. The invention also relates to an optical arrangement comprising such an optical waveguide and method for producing the optical waveguide. The problem addressed by the invention is to provide an optical waveguide for high-performance operation, which is improved in relation to the prior art with respect to mode instability. The invention solves the problem by the fact that the optical waveguide consists of crystalline material at least in the core region (1).
摘要:
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.
摘要:
The invention relates to an optical fiber as an optical waveguide for the single-mode operation. The present invention proposes a fiber having a microstructure, by which the propagation of modes of a higher order are selectively suppressed in the optical waveguide. At the same time, the propagation of transversal modes of a higher order is dampened more strongly than the propagation of the fundamental modes of the optical waveguide.