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Cascading compact 1*N non-uniform optical branching device

An optical splitter, compact technology, applied in the direction of fiber mechanical structure, etc., can solve the problems of large size, large PDL and WDL, and many stages, and achieve the effect of size reduction and small PDL and WDL

Active Publication Date: 2014-10-01
HENAN SHIJIA PHOTONS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problems of the traditional asymmetric non-uniform Y-branch optical splitter, such as large PDL and WDL, many stages, and large size, so as to provide a cascaded compact 1×N non-uniform optical splitter. Splitter

Method used

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  • Cascading compact 1*N non-uniform optical branching device
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  • Cascading compact 1*N non-uniform optical branching device

Examples

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Embodiment 1

[0018] Example 1: figure 1 It is a traditional non-uniform 1×5 optical splitter structure, which is formed by cascading non-uniform Y branches and three Y branches in a three-stage manner, forming one input channel 12 and five output channels, five output channels They are output channel Ⅰ1, output channel Ⅱ2, output channel Ⅲ3, output channel Ⅳ4, output channel Ⅴ5. There are more stages and larger sizes.

[0019] Cascade compact 1×5 non-uniform optical splitter, such as figure 2 As shown, an optical splitter with a two-stage structure of an input channel 1 and five output channels is formed by a non-uniform three-branch as the first stage and two Y-branches as the second stage in a compact sparkle cascading manner , the five output channels are output channel Ⅰ1, output channel Ⅱ2, output channel Ⅲ3, output channel Ⅳ4, output channel Ⅴ5. The three branches are used as the first level, two of the three branches are cascaded with the Y branch to form the second level, and t...

Embodiment 2

[0030] Embodiment 2: Cascade compact 1×9 non-uniform optical splitter, such as Figure 5 As shown, one input channel 12 and nine An optical splitter with a three-stage structure for output channels. The nine output channels are output channel I1, output channel II2, output channel III3, output channel IV4, output channel V5, output channel VI6, output channel VII7, output channel VIII8, and output channel IX9. Two of the three branches of the first level are cascaded with the Y branches of the second level respectively, and the two branches of the Y branches of the second level are respectively cascaded with the Y branches of the third level, and the three branches of the first level are respectively cascaded. The last branch of a branch does not cascade. The distance between the output channels is 2 × 127 μm.

[0031] In addition, the distance between the output channels is 2 × 250 μm.

Embodiment 3

[0032] Embodiment 3: Cascade compact 1×10 non-uniform optical splitter, such as Figure 6 As shown, the last branch of the three branches of the first stage is cascaded with the Y branch in a compact sparkle cascading manner, and the rest are the same as in Embodiment 2, forming an input channel 12 and ten output channels, and the ten output channels are output channels respectively Channel I1, output channel II2, output channel III3, output channel IV4, output channel V5, output channel VI6, output channel VII7, output channel VIII8, output channel IX9, output channel X10.

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Abstract

The invention discloses a cascading compact 1*N non-uniform optical branching device. The cascading compact 1*N non-uniform optical branching device is characterized in that N is a natural number greater than or equal to 3 and comprises an input channel and output channels, wherein the output channels are provided with three branches; two branches are cascaded with a Y branch respectively to form the output channel of a 2n way; n is a natural number greater than or equal to 1; the third branch is cascaded with the three branches. According to the invention, the non-uniform three branches and the Y branch are cascaded to form a non-uniform optical branching device, so that the non-uniform distribution in various ways and various powers can be realized, and the series is few compared with the conventional non-uniform optical branching devices; because the series is few, the size can be greatly reduced, and the PDL and the WDL are relatively small.

Description

technical field [0001] The invention relates to a fiber-to-the-home optical distribution device, more specifically, to a cascaded compact 1×N non-uniform optical splitter of planar optical waveguides. Background technique [0002] With the vigorous development of global and domestic fiber-to-the-home (FTTH), optical splitters, as the key components of passive optical network systems (PON) in FTTH, have been extensively studied for a long time. In the traditional PON system, a uniform optical splitter structure has been used, but because the number of users connected to each user end is not the same, and the distance to the optical line terminal may also be different, the uniform optical splitter structure is used It will lead to uneven distribution and waste of resources. In the early promotion stage of FTTH, there may be individual users who are unwilling to participate in the FTTH plan, and the use of uniform optical splitters will increase the construction cost. Based o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
Inventor 王亮亮张家顺安俊明吴远大王红杰王玥尹小杰李建光胡雄伟
Owner HENAN SHIJIA PHOTONS TECH