Y-bifurcation-structured 1 * 2 optical power splitter

Abstract

The invention discloses a Y-bifurcation-structured 1 * 2 optical power splitter. The splitter includes a high-order mode inhibition zone, a bifurcation zone and a mode field separation zone; an input tapered waveguide, a mode inhibition waveguide and an output tapered waveguide are connected with one another consequentially so as to form the high-order mode inhibition zone; one end of one single-mode waveguide is in cross connection with one end of the other single-mode waveguide so as to form the bifurcation zone; the output tapered waveguide is connected with the cross end of the two single-mode waveguides; the mode field separation zone is formed by two S-shaped single-mode waveguides; and one end of each S-shaped single-mode waveguide is connected with the other end of each single-mode waveguide. The Y-bifurcation-structure 1 * 2 optical power splitter has the advantages of broader operation bandwidth and low insertion loss; power equal division of the Y-bifurcation-structured 1 * 2 optical power splitter is not affected by the high-order mode of input signals; and the Y-bifurcation-structured 1 * 2 optical power splitter can satisfy the requirements of signal transmissions in various kinds of optical networks.

Description

technical field [0001] The invention relates to an optical power splitter, in particular to a Y bifurcated structure Optical power splitter. Background technique [0002] Optical power splitter is one of the core devices in communication networks such as cable television network (CATV), passive optical network (PON), and optical local area network. After the integration of the three networks, the optical carrier used for signal transmission has , , Three wavelengths, so the optical power splitter needs to be in Realize low loss and power sharing in a large bandwidth range. At present, the only integrated optical device that can meet this bandwidth requirement is the Y bifurcation structure. Power divider, or cascaded by Y bifurcation power divider. [0003] Such as figure 1 Shown is a traditional Y-fork configuration In the power divider, the single-mode optical signal is input from the interface A0, enters the tapered waveguide 1, and undergoes lateral exp...

AI Technical Summary

Problems solved by technology

It can be seen from the power distribution of the A0 interface that due to the interference of high-order modes, the peak position of the input signal shifts to the right, and the power distribution of the B0 interface shows that the peak power of the right branch is higher than that of the left branch, so power sharing cannot be achieved

[0004] In practice, the input signal of the optical power splitter is not the fundamental mode, so the traditional Y bifurcated power splitter cannot meet the application requirements

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