Arrangement for producing a conversion between light rays having a small beam cross-section and a light ray having a large beam cross-section and a method of making the arrangement
First Claim
1. An arrangement for producing a conversion between a plurality of mutually separate light rays with a respectively small beam cross-section and a light ray having a larger beam cross-section, said arrangement having an optical waveguide core for each of the light rays having a small beam cross-section, each of said optical waveguide cores having a first core end face and a second core end face with a longitudinal core axis extending between the two end faces, the first core end faces having an oblong configuration in a first direction and being arranged in the first direction extending parallel to a plane allocated to the common waveguide cores for receiving light rays having the smaller beam cross-section and the second end faces of the cores being arranged for coupling light into the light ray having the larger beam cross-section, the improvements comprising each of the second end faces being fashioned to have an oblong shape extending in a second direction different from said first direction, and the core cross-section of each of the waveguide cores essentially continuously changing along the longitudinal core axis from the geometric shape of the first core end face into the geometric shape of the second core end face.
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Accused Products
Abstract
An arrangement which converts a plurality of light beams having a small beam cross-section into a light beam having a larger cross-section comprises a plurality of waveguide cores with each core having a first end face which is oblong and arranged for receiving light from each of the light rays having the smaller beam cross-section and each core has a second end face which are arranged together and extend in a different direction than the first end faces for coupling light with the beam having the large beam cross-section. Preferably, each of the cores is fashioned in the form of a bisphenoid so that the first and the second core end faces are oblong in directions extending perpendicular to one another.
19 Citations
11 Claims
- 1. An arrangement for producing a conversion between a plurality of mutually separate light rays with a respectively small beam cross-section and a light ray having a larger beam cross-section, said arrangement having an optical waveguide core for each of the light rays having a small beam cross-section, each of said optical waveguide cores having a first core end face and a second core end face with a longitudinal core axis extending between the two end faces, the first core end faces having an oblong configuration in a first direction and being arranged in the first direction extending parallel to a plane allocated to the common waveguide cores for receiving light rays having the smaller beam cross-section and the second end faces of the cores being arranged for coupling light into the light ray having the larger beam cross-section, the improvements comprising each of the second end faces being fashioned to have an oblong shape extending in a second direction different from said first direction, and the core cross-section of each of the waveguide cores essentially continuously changing along the longitudinal core axis from the geometric shape of the first core end face into the geometric shape of the second core end face.
Specification