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Title: All-in-one silicon photonic polarization processor
Authors: Zhou, HL 
Zhao, YH
Wei, YX
Li, F 
Dong, JJ
Zhang, XL
Issue Date: 2019
Source: Nanophotonics, Dec. 2019, v. 8, no. 12, p. 2257-2267
Abstract: With the great developments in optical communication technology and large-scale optical integration technology, it is imperative to realize the traditional functions of polarization processing on an integration platform. Most of the existing polarization devices, such as polarization multiplexers/demultiplexers, polarization controllers, polarization analyzers, etc., perform only a single function. Definitely, integrating all these polarization functions on a chip will increase function flexibility and integration density and also cut the cost. In this article, we demonstrate an all-in-one chip-scale polarization processor based on a linear optical network. The polarization functions can be configured by tuning the array of phase shifters on the chip. We demonstrate multiple polarization processing functions, including those of a multiple-input-multiple-output polarization descrambler, polarization controller, and polarization analyzer, which are the basic building blocks of polarization processing. More functions can be realized by using an additional two-dimensional output grating. A numerical gradient descent algorithm is employed to self-configure and selfoptimize these functions. Our demonstration suggests great potential for chip-scale, reconfigurable, and fully programmable photonic polarization processors with the artificial intelligence algorithm.
Keywords: Silicon photonics
Polarization processor
Multiple-input-multiple-output
Publisher: De Gruyter
Journal: Nanophotonics 
ISSN: 2192-8606
EISSN: 2192-8614
DOI: 10.1515/nanoph-2019-0310
Rights: Open Access © 2019 Jianji Dong et al., published by De Gruyter, Berlin/Boston. This work is licensed under the Creative Commons Attribution 4.0 Public License. BY 4.0 (https://creativecommons.org/licenses/by/4.0/)
The following publication Zhou, H., Zhao, Y., Wei, Y., et al. (2019). All-in-one silicon photonic polarization processor. Nanophotonics, 8(12), pp. 2257-2267 is available at https://dx.doi.org/10.1515/nanoph-2019-0310
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