Abstract:
Arrangements of multi-core fibers, devices, and systems with two or more cores, defined by a core separation of less than a cross-sectional diameter of a discrete single core unmodified fiber, and methods of using are provided and/or described herein. Arrangements of fibers, devices, and systems with three or more cores, defined by a core separation of less than a cross-sectional diameter of a discrete single core fiber, and methods of using are provided and/or described herein. Also, disclosed are methods of manufacturing and joining two or more single rectangular (or square core) fibers to form two or more lines of illumination for myriad applications.
Abstract:
Light emitting members or illuminators in the form of a light guide which may comprise one or more flat optical fibers having a pattern of U shaped notches or grooves in at least one side to cause conducted light to be emitted therefrom. A laser may be used to cut any desired pattern of notches or grooves in the light guide.
Abstract:
In a known method for producing a quartz glass component for a laser, a cylindrical shaped part is produced with a core of laser active quartz glass, which has a cylindrical cladding surface and a front-sided output end for laser radiation and which is formed into a winding arrangement and fixed in said form. Starting from this, to provide a simple and inexpensive method for producing a laser component of laser active quartz glass in which pump light can be coupled in a highly efficient manner through the cylinder cladding into the core region, the invention suggests that during formation of the winding arrangement (3) the cylindrical shaped part (6) has a temperature above a deformation temperature at which the quartz glass can be deformed plastically. A laser component configured according to the invention is characterized by a winding arrangement (9) which is made from a plastically deformed shaped part (11) in a self-supporting manner.
Abstract:
A method of manufacturing an optical fibre, comprises: (i) forming a preform (10) for drawing into the fibre, the preform (10) comprising a bundle of elongate elements (20,50) arranged to form a first region that becomes a cladding region of the fibre and a second region that becomes a core region of the fibre; (ii) drawing the preform (10) into the fibre. The bundle of elongate elements (20,50) comprises a plurality of elongate elements (20) of a lower purity dielectric material and at least one elongate element (50) of a higher purity dielectric material. The first region comprises a plurality of the lower purity elements (20) and the second region comprises the higher purity element (50).
Abstract:
An optical fibre structure comprising a holey fibre (20) arranged in a holey outer support structure made up of holey tubes (22) encased in a thin walled outer jacket (24). The holey fibre may have a solid core surrounded by a holey cladding comprising a plurality of rings of holes. With the invention it is possible to produce robust, coated and jacketed fibres with microstructured core features of micrometer size relatively easily using existing fibre fabrication technology. This improvement is a result of the outer holey structure which reduces the thermal mass of the supporting structure and makes it possible to reliably and controllably retain small hole features during the fibre fabrication process.
Abstract:
This is a way to make a glass thing with anisotropic optical properties. A preform (10) with longitudinal passages is drawn thinner by a puller (18) so as to make a rod or fiber (16).
Abstract:
Hollow glass fibres laminated materials suffer, still nowadays, from the fault of containing water and other substances. The sealing processes used up to flow still show defects which are eliminated by the invention. The hollow glass fibre receives sealing walls during the spinning operation which takes place with a protection gas comprised of an aerosol wherein the material of the tight wall is in suspension. For this purpose, small hollow glass balls are used, of which the diameter corresponds to that of the fibres. The aerosol is directed by a cooled nozzle of the hollow fibre inner diameter, so that the current speed corresponds approximately to the spinning speed (about 1 to 1.5 m/s).
Abstract:
According to embodiments of the present invention, a fiber preform or an optical fiber is provided. The fiber preform or the optical fiber includes a core region, and a cladding arrangement comprising a first cladding region comprising a plurality of rods entirely surrounding the core region, and a second cladding region in between the core region and the first cladding region, the second cladding region comprising a plurality of tubes, wherein a plurality of splits are defined in the second cladding region. According to further embodiments of the present invention, a method for forming a fiber preform and a method for forming an optical fiber are also provided.
Abstract:
The present invention provides silk photonic crystals that can be used to enhance light-induced effects. Also disclosed are biocompatible, functionalized, all-protein inverse opals and related methods.
Abstract:
This invention provides a method for measuring and monitoring the state of polarization (SOP) of a polarization maintaining (PM) fiber and the like using a narrowband fiber Bragg grating (FBG) written on the same. The PM fiber therefore comprises a first narrowband reference FBG which is used as a reference to measure and monitor the SOP of the PM fiber. Due to the birefringence properties of the PM fiber, the reference FBG will generally reflect two narrowband spectra, each having a central wavelength; one in the slow axis and one in the fast axis. By measuring the intensity of the reflected spectra in each axis and by tuning the fiber with a polarization controller, it is possible to adjust the fiber to a predetermined SOP. After having adjusted the PM fiber to a predetermined SOP, it is possible to accurately measure the optical properties of a second grating, or of another optical device, according to the predetermined SOP. The method of the present invention can also be advantageously used for accurate measurement of reflectivity.