WDM-compatible mode-division multiplexing on a silicon chip

Lian-Wee Luo, Noam Ophir, Christine P. Chen, Lucas H. Gabrielli, Carl B. Poitras, Keren Bergmen and Michal Lipson ()
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Lian-Wee Luo: School of Electrical and Computer Engineering, Cornell University, 428 Phillips Hall, Ithaca, New York 14853, USA
Noam Ophir: Columbia University
Christine P. Chen: Columbia University
Lucas H. Gabrielli: School of Electrical and Computer Engineering, Cornell University, 428 Phillips Hall, Ithaca, New York 14853, USA
Carl B. Poitras: School of Electrical and Computer Engineering, Cornell University, 428 Phillips Hall, Ithaca, New York 14853, USA
Keren Bergmen: Columbia University
Michal Lipson: School of Electrical and Computer Engineering, Cornell University, 428 Phillips Hall, Ithaca, New York 14853, USA

Nature Communications, 2014, vol. 5, issue 1, 1-7

Abstract: Abstract Significant effort in optical-fibre research has been put in recent years into realizing mode-division multiplexing (MDM) in conjunction with wavelength-division multiplexing (WDM) to enable further scaling of the communication bandwidth per fibre. In contrast, almost all integrated photonics operate exclusively in the single-mode regime. MDM is rarely considered for integrated photonics because of the difficulty in coupling selectively to high-order modes, which usually results in high inter-modal crosstalk. Here we show the first microring-based demonstration of on-chip WDM-compatible mode-division multiplexing with low modal crosstalk and loss. Our approach can potentially increase the aggregate data rate by many times for on-chip ultrahigh bandwidth communications.

Date: 2014
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DOI: 10.1038/ncomms4069

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