Optical fiber wrapping layer light filter-out device and forming method thereof
A fiber cladding and filter technology, which is applied to clad optical fibers, lasers, laser parts, etc., can solve the problems of obvious thermal effects of cladding optical filters, and improve power tolerance and cladding optical filtering. The effect of removing efficiency, eliminating Fresnel reflection, and improving the filtering efficiency of cladding light
Active Publication Date: 2014-12-24
TSINGHUA UNIV
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This issue results in significant thermal effects in the cladding optical filter
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[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0030] The optical fiber cladding optical filter and its forming method according to the embodiments of the present invention will be described below with reference to the accompanying drawings.
[0031] figure 1 is a schematic structural view of an optical fiber cladding light filter according to an embodiment of the present invention. Such as figure 1 As shown, the fiber cladding optical filter 100 (not shown in the figure) according to an embodiment of the present invention includes: a fiber cladding 110 and a large cladding 120 . ...
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The invention provides an optical fiber wrapping layer light filter-out device which is obtained by arranging a large wrapping layer on a naked optical fiber wrapping layer. The large wrapping layer is arranged on the optical fiber wrapping layer in a sleeving mode, and the large wrapping layer and the optical fiber wrapping layer are integrally formed. The large wrapping layer is provided with a transmission light emitting face, a reflection light emitting face and a light scattering face. The transparency of the transmission light emitting face and the transparency of the reflection light emitting face are larger than the transparency of the light scattering face. The large wrapping layer and the optical fiber wrapping layer are made of the same material. By means of the optical fiber wrapping layer light filter-out device, the wrapping layer luminous power during laser transmission can be filtered out, and the power resistance of the filter-out device and the light filter-out efficiency of the wrapping layers can be remarkably improved. The invention further provides a forming method of the optical fiber wrapping layer light filter-out device.
Description
technical field [0001] The invention relates to the field of fiber laser technology, in particular to an optical fiber cladding optical filter and a forming method thereof. Background technique [0002] With the development of fiber laser technology and the continuous improvement of fiber output capacity, in some specific fields, it is necessary to release the transmission power in the fiber cladding. For example, pump filtering is performed at the gain tail, and in order to improve the brightness of the output laser, the power transmitted in the cladding is filtered to obtain a pure core output. At present, there are many technologies and equipments that can provide leaky cladding power. The mainstream technology is to set a refractive index matching layer outside the cladding of the fiber. Make the refractive index of this matching layer greater than the refractive index of the fiber cladding. Therefore, the total reflection condition is destroyed, and the light in the c...
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IPC IPC(8): H01S3/067H01S3/042G02B6/036G02B6/245
Inventor 肖起榕巩马理付晨闫平孙骏逸李丹
Owner TSINGHUA UNIV