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Compact polarization diversity Kramers-Kronig coherent receiver on silicon chip

Compact polarization diversity Kramers-Kronig coherent receiver on silicon chip
Compact polarization diversity Kramers-Kronig coherent receiver on silicon chip
We design and fabricate a compact silicon photonic integrated circuit (PIC) for polarization diversity heterodyne coherent detection. This PIC integrates two optical gratings for fiber coupling and polarization diversity, two germanium single-ended photodetectors (PDs), and three multimode interferometers (MMIs) for power splitting and optical hybrid. The device is highly compact with a footprint of 0.68mm × 0.9mm. We test this PIC with heterodyne detection experiments of polarization division multiplexed (PDM) 32Gbaud quadrature phase shift keying (QPSK) and 16-ary quadrature amplitude modulation (16QAM) signals. The signal-signal beat interference due to square-law detection is separately mitigated with the Kramers-Kronig (KK) scheme for each of the two orthogonal polarizations. To our best knowledge, we report the first PDM-KK coherent receiver in PIC with a capability of detecting 256Gb/s 16QAM signals, which shows the most compact size among the silicon coherent receivers ever reported.
1094-4087
23654-23660
Zhang, Fan
fe543ad9-71b0-4f8d-b9da-d95280e30802
Ruan, Xiaoke
a9011346-af43-4194-8992-d7f52f8b87cd
Zhu, Yixiao
938bb542-3de3-4c5c-a432-16741f356ad8
Chen, Zeyu
9dca53b3-37a6-4a30-a72a-d73151dd904e
Qiu, Xiaoming
1319dd41-e8e5-4c0f-8f94-7c54ff9a3525
Yang, Fan
1fe422d5-52f3-4763-abfe-6a9b68464dd7
Li, Ke
dd788ca7-0a39-4364-b4b8-65f0bb93340f
Li, Yanping
adffcfa9-c6ba-4e98-87b1-de5b04745502
Zhang, Fan
fe543ad9-71b0-4f8d-b9da-d95280e30802
Ruan, Xiaoke
a9011346-af43-4194-8992-d7f52f8b87cd
Zhu, Yixiao
938bb542-3de3-4c5c-a432-16741f356ad8
Chen, Zeyu
9dca53b3-37a6-4a30-a72a-d73151dd904e
Qiu, Xiaoming
1319dd41-e8e5-4c0f-8f94-7c54ff9a3525
Yang, Fan
1fe422d5-52f3-4763-abfe-6a9b68464dd7
Li, Ke
dd788ca7-0a39-4364-b4b8-65f0bb93340f
Li, Yanping
adffcfa9-c6ba-4e98-87b1-de5b04745502

Zhang, Fan, Ruan, Xiaoke, Zhu, Yixiao, Chen, Zeyu, Qiu, Xiaoming, Yang, Fan, Li, Ke and Li, Yanping (2019) Compact polarization diversity Kramers-Kronig coherent receiver on silicon chip. Optics Express, 27 (17), 23654-23660. (doi:10.1364/OE.27.023654).

Record type: Article

Abstract

We design and fabricate a compact silicon photonic integrated circuit (PIC) for polarization diversity heterodyne coherent detection. This PIC integrates two optical gratings for fiber coupling and polarization diversity, two germanium single-ended photodetectors (PDs), and three multimode interferometers (MMIs) for power splitting and optical hybrid. The device is highly compact with a footprint of 0.68mm × 0.9mm. We test this PIC with heterodyne detection experiments of polarization division multiplexed (PDM) 32Gbaud quadrature phase shift keying (QPSK) and 16-ary quadrature amplitude modulation (16QAM) signals. The signal-signal beat interference due to square-law detection is separately mitigated with the Kramers-Kronig (KK) scheme for each of the two orthogonal polarizations. To our best knowledge, we report the first PDM-KK coherent receiver in PIC with a capability of detecting 256Gb/s 16QAM signals, which shows the most compact size among the silicon coherent receivers ever reported.

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Accepted/In Press date: 24 July 2019
e-pub ahead of print date: 5 August 2019
Published date: 19 August 2019
Additional Information: © 2019 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.

Identifiers

Local EPrints ID: 433230
URI: https://eprints.soton.ac.uk/id/eprint/433230
ISSN: 1094-4087
PURE UUID: c26eff5a-a0ea-4a0e-b580-0625c1658015

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Date deposited: 12 Aug 2019 16:30
Last modified: 07 Oct 2019 16:31

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Contributors

Author: Fan Zhang
Author: Xiaoke Ruan
Author: Yixiao Zhu
Author: Zeyu Chen
Author: Xiaoming Qiu
Author: Fan Yang
Author: Ke Li
Author: Yanping Li

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