| DOI | Resolve DOI: https://doi.org/10.1109/LPT.2021.3116439 |
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| Author | Search for: Gonzalez-Andrade, DavidORCID identifier: https://orcid.org/0000-0003-4402-877X; Search for: de Cabo, Raquel FernandezORCID identifier: https://orcid.org/0000-0003-4134-8735; Search for: Vilas, JaimeORCID identifier: https://orcid.org/0000-0002-8693-3607; Search for: Olivares, Irene; Search for: Dias, AntonioORCID identifier: https://orcid.org/0000-0001-8480-6682; Search for: Luque-Gonzalez, Jose ManuelORCID identifier: https://orcid.org/0000-0002-6838-8641; Search for: Wanguemert-Perez, J. Gonzalo; Search for: Ortega-Monux, AlejandroORCID identifier: https://orcid.org/0000-0001-8313-6381; Search for: Molina-Fernandez, InigoORCID identifier: https://orcid.org/0000-0001-9596-4117; Search for: Halir, RobertORCID identifier: https://orcid.org/0000-0002-5560-3189; Search for: Cheben, Pavel1; Search for: Velasco, Aitor V.ORCID identifier: https://orcid.org/0000-0001-7729-8595 |
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| Affiliation | - National Research Council Canada. Advanced Electronics and Photonics
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| Funder | Search for: Spanish Ministry of Science and Innovation; Search for: Community of Madrid-FEDER funds; Search for: Horizon 2020 Research and Innovation Program under Marie Sklodowska-Curie |
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| Format | Text, Article |
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| Subject | phase shifter; mode-division multiplexing; silicon-on-insulator platform; subwavelength gratings; bandwidth; multiplexing; crosstalk; performance evaluation; couplers; junctions |
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| Abstract | On-chip mode converters and multiplexers are fundamental components to scale the capacity of silicon optical interconnects by using different spatial modes of waveguides. Recently, we proposed a low loss and compact mode converter and multiplexer consisting of a subwavelength-engineered multimode interference coupler, tapered waveguides as phase shifter and a symmetric Y-junction. However, the narrow spectral response of the tapered phase shifter limited the device crosstalk performance. In this work, we demonstrate that the use of a subwavelength grating phase shifter with low phase-shift errors substantially reduces the crosstalk and expands the operational bandwidth. A complete multiplexer-demultiplexer link consisting of two devices in back-to-back configuration was fabricated in a 220-nm silicon-on-insulator platform. Experimental measurements of the complete link show insertion loss below 2 dB and crosstalk less than −17 dB over a bandwidth of 245 nm (1427 – 1672 nm). |
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| Publication date | 2021-09-29 |
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| Publisher | IEEE |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 31bb340f-09a1-49e3-8224-aefd360fa090 |
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| Record created | 2023-01-24 |
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| Record modified | 2023-01-24 |
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