Polarization-maintaining dispersion compensation microstructure optical fiber
A technology of microstructured optical fiber and color cast, applied in the field of optical fiber communication
Active Publication Date: 2020-02-14
四川天府江东科技有限公司
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Therefore, the disadvantage of the above polarization-maintaining dispersion compensation microstructure fiber scheme is that only one polarization direction can produce large negative dispersion at 1550nm for dispersion compensation
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[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.
[0019] see figure 1 , the specific structure of an embodiment of a polarization-maintaining dispersion-compensating microstructured optical fiber proposed by the present invention is given. The microstructure optical fiber includes an inner core 1 , an inner cladding 2 , an outer core 3 , an outer cladding 4 and a base material 5 .
[0020] The inner core 1 is arranged at the center of the base material 5, the base material 5 is quartz, the inner cladding 2, the outer core 3 and the outer cladding 4 are w...
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The invention discloses a polarization-maintaining dispersion compensation microstructure optical fiber comprising an inner core, an inner cladding layer, an outer core and an outer cladding layer. Air holes adopted by the inner cladding layer, the outer core and the outer cladding layer are all oval air holes with consistent long and short axis directions; the oval air holes contained by the inner cladding layer and the outer cladding layer are the same in size; and the inner core, the inner cladding layer, the outer core and the outer cladding layer are all made of quartz as substrate materials. The centers of the oval air holes employ modes of arrangement of isosceles triangles having the bottoms and heights consistent with the long-axis directions and the short-axis directions of the oval air holes respectively; and the bottom of each isosceles triangle is lambda x and the height of the isosceles triangle is lambda y. According to the invention, the inner core has a polarization maintaining characteristic and the refractive indexes of the two polarization modes of the inner core are respectively intersected with the refractive indexes of the two polarization modes of the outercore near 1550nm, so that the large negative dispersion is realized at the 1550 nm position and thus dispersion compensation can be realized at the 1550 nm position in the two directions. The contradiction between dispersion compensation at the 1550 nm position in the two directions and polarization maintaining characteristics is eliminated.
Description
technical field [0001] The invention relates to the field of optical fiber communication, in particular to a polarization-maintaining dispersion compensation microstructure optical fiber. Background technique [0002] As the transmission medium of optical signal, optical fiber plays a pivotal role in optical fiber communication network. Polarization-maintaining fiber has more and more applications in high-speed optical communication due to its strong polarization-maintaining properties for linearly polarized light. In order to avoid the problem of signal broadening during transmission, it is necessary to perform dispersion compensation on the polarization-maintaining fiber. If the traditional dispersion compensating fiber is used to compensate the polarization maintaining fiber, since it does not have polarization maintaining characteristics, mode coupling will occur in the two polarization directions and cause crosstalk, and the polarization state of the light will not be ...
Claims
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Login to View More IPC IPC(8): G02B6/02G02B6/024
CPCG02B6/02285G02B6/02295G02B6/02314G02B6/024
Inventor 王伟杨骐豪周凡迪李正然杨慢龚琳王彦
Owner 四川天府江东科技有限公司