An asymmetric y-forked pattern spacer separator
A mode interval, asymmetric technology, applied in the direction of instruments, light guides, optics, etc., can solve uninvolved problems, achieve the effect of reducing complexity, flexible mode allocation, and improving channel utilization and communication capacity
Active Publication Date: 2017-06-16
NINGBO UNIV
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Problems solved by technology
At present, functional devices that can be used in mode multiplexing transmission optical communication systems include mode multiplexing / demultiplexing devices, mode sorters, mode converters, and mode cross switches, etc. A pattern-spaced separator for separation, so far not covered
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Embodiment
[0014] Embodiment: As shown in the figure, an asymmetrical Y bifurcated mode spacing separator includes a backbone multimode waveguide 1, a wide branch multimode waveguide 2 and a fine branch multimode waveguide 3, and the width of the wide branch multimode waveguide 2 is W w greater than the width W of the finely branched multimode waveguide 3 0 , the width W of the wide-branch multimode waveguide 2 w and the width W of the finely branched multimode waveguide 3 0 The sum is equal to the width W of the trunk multimode waveguide 1, the beginning 21 of the wide branch multimode waveguide 2 and the beginning 31 of the fine branch multimode waveguide 3 are respectively connected to the end 11 of the trunk multimode waveguide 1, and the wide branch multimode waveguide The starting end 21 of 2 intersects with the starting end 31 of the fine branch multimode waveguide 3, the wide branch multimode waveguide 2, the fine branch multimode waveguide 3 and the main multimode waveguide 1 ...
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The invention discloses an asymmetrical Y-branch mode space separator, which comprises a trunk multimode waveguide, a wide branch multimode waveguide and a fine branch multimode waveguide, the width of the wide branch multimode waveguide is greater than that of the fine branch multimode waveguide Width, the sum of the width of the wide branch multimode waveguide and the width of the fine branch multimode waveguide is equal to the width of the trunk multimode waveguide, the beginning of the wide branch multimode waveguide and the beginning of the fine branch multimode waveguide are respectively the same as the trunk multimode waveguide The end of the waveguide is connected, the beginning of the wide branch multimode waveguide and the beginning of the fine branch multimode waveguide intersect, and the distance between the end of the wide branch multimode waveguide and the end of the fine branch multimode waveguide is not less than that of the wide branch multimode waveguide The width of , the propagation constant of the i-th order mode in the thin branch multimode waveguide is greater than the propagation constant of the i-th order mode in the wide branch multimode waveguide and smaller than the propagation constant of the i+1 order mode in the wide branch multimode waveguide; advantages It can be applied to a mode multiplexing transmission optical communication system for input mode parity separation.
Description
technical field [0001] The invention relates to a mode space separator, in particular to an asymmetrical Y-branch mode space separator. Background technique [0002] With the rapid growth of data traffic, the problem of network congestion is becoming more and more serious. Traditional optical communication systems are usually single-mode optical fiber transmission systems, which are usually implemented by wavelength division multiplexing technology, polarization multiplexing technology and multi-level modulation technology. Traditional optical communication systems are slowly approaching the limit of communication capacity. For this reason, how to effectively expand the capacity of the optical communication system has become the research focus of solving network congestion. [0003] In recent years, in the mode multiplexing transmission technology, since each mode can be used as an independent channel for transmitting different data, it has attracted extensive attention. W...
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IPC IPC(8): G02B6/24G02B6/125
Inventor 陈伟伟汪鹏君杨建义
Owner NINGBO UNIV