Arbitrary-ratio 1 × 2 power splitter based on asymmetric multimode interference
Free choice of splitting ratio is one of the main properties of a power splitter required in integrated photonics, but conventional multimode interference (MMI) power splitters can only obtain a few discrete ratios. This Letter presents both numerical and experimental results of an arbitrary-ratio 1...
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| Published in | Optics letters Vol. 39; no. 19; p. 5590 |
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| Main Authors | , , , |
| Format | Journal Article |
| Language | English |
| Published |
United States
01.10.2014
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| Online Access | Get more information |
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| Summary: | Free choice of splitting ratio is one of the main properties of a power splitter required in integrated photonics, but conventional multimode interference (MMI) power splitters can only obtain a few discrete ratios. This Letter presents both numerical and experimental results of an arbitrary-ratio 1×2 MMI power splitter, which is constructed by simply breaking the symmetry of the multimode region. In the new device, the power splitting ratio can be adjusted continuously from 100:0 to 50:50, while the dimension of the multimode section stays in the range of 1.5×(1.8-2.8) μm. The experimental data also indicate that the proposed arbitrary-ratio splitter keeps the original advantages of MMI devices, such as low excess loss, weak wavelength dependence, and large fabrication tolerance. |
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| ISSN: | 1539-4794 |
| DOI: | 10.1364/OL.39.005590 |