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Ultralow-loss silicon waveguide crossing using Bloch modes in index-engineered cascaded multimode-interference couplers.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Zhang, Yang Hosseini, Amir Xu, Xiaochuan Kwong, David Nien Chen, Ray T. |
| Copyright Year | 2013 |
| Abstract | We investigate the loss mechanism in three-moded multimode-interference couplers that are the building blocks of a compact and low-loss waveguide crossing structure. Broadband silicon waveguide crossing arrays with <0.01 dB insertion loss per crossing are proposed using cascaded multimode-interference couplers, where lateral subwavelength nanostructures are used to reduce the insertions loss. We design and fabricate a 101×101 waveguide crossing array with a pitch of 3.08 μm. Insertion loss of ∼0.02 dB per crossing and crosstalk <-40 dB at 1550 nm operating wavelength and a broad transmission spectrum ranging from 1520 to 1610 nm are experimentally demonstrated. |
| File Format | PDF HTM / HTML |
| DOI | 10.1364/OL.38.003608 |
| Alternate Webpage(s) | http://muri.engr.utexas.edu/sites/default/files/publication/13-1%20on%20chip%20optical%20interconnects.pdf |
| Alternate Webpage(s) | http://chen-server.mer.utexas.edu/2013/ol-38-18-3608.pdf |
| PubMed reference number | 24104826 |
| Alternate Webpage(s) | https://doi.org/10.1364/OL.38.003608 |
| Journal | Medline |
| Volume Number | 38 |
| Issue Number | 18 |
| Journal | Optics letters |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
