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Integrated tunable mode filter for a mode-division multiplexing system

Integrated tunable mode filter for a mode-division multiplexing system
Integrated tunable mode filter for a mode-division multiplexing system

Mode-division multiplexing (MDM) using multiple spatial modes as independent signals has been a promising technique to increase the communication capacity in conjunction with wavelength-division multiplexing (WDM). In MDM systems, mode filters are key components to filter out the undesired signals on specific mode. Analogous to a wavelength tunable filter used in a WDM system, here we propose and experimentally demonstrate a fundamental- or high-order-mode-pass tunable filter for a flexible MDM optical network based on a silicon platform. It consists of two switchable mode exchangers (MEs) and a fundamental-mode pass filter. By controlling the working state of the MEs, dynamic filtering and a tunable output can be achieved. This tunable mode filter exhibits a high extinction ratio of 18 dB and low insertion loss of 3 dB over the C-band. For further demonstration, the proposed device is tested using a modulated signal at 20 Gb/s. The eye diagrams and the bit error rates indicate a good filtering performance.

0146-9592
3658-3661
Sun, Chunlei
202b425b-14ea-40af-9bcb-9308d824c0e7
Wu, Wenhao
dd0ee2ce-ed37-490e-96ea-d4293e2f175e
Yu, Yu
8f3bb37e-9ba0-493e-873f-f4c5463114d7
Zhang, Xinliang
01c434f9-e13b-458f-a5ef-9acac3d6e3bd
Reed, Graham T.
ca08dd60-c072-4d7d-b254-75714d570139
Sun, Chunlei
202b425b-14ea-40af-9bcb-9308d824c0e7
Wu, Wenhao
dd0ee2ce-ed37-490e-96ea-d4293e2f175e
Yu, Yu
8f3bb37e-9ba0-493e-873f-f4c5463114d7
Zhang, Xinliang
01c434f9-e13b-458f-a5ef-9acac3d6e3bd
Reed, Graham T.
ca08dd60-c072-4d7d-b254-75714d570139

Sun, Chunlei, Wu, Wenhao, Yu, Yu, Zhang, Xinliang and Reed, Graham T. (2018) Integrated tunable mode filter for a mode-division multiplexing system. Optics Letters, 43 (15), 3658-3661. (doi:10.1364/OL.43.003658).

Record type: Article

Abstract

Mode-division multiplexing (MDM) using multiple spatial modes as independent signals has been a promising technique to increase the communication capacity in conjunction with wavelength-division multiplexing (WDM). In MDM systems, mode filters are key components to filter out the undesired signals on specific mode. Analogous to a wavelength tunable filter used in a WDM system, here we propose and experimentally demonstrate a fundamental- or high-order-mode-pass tunable filter for a flexible MDM optical network based on a silicon platform. It consists of two switchable mode exchangers (MEs) and a fundamental-mode pass filter. By controlling the working state of the MEs, dynamic filtering and a tunable output can be achieved. This tunable mode filter exhibits a high extinction ratio of 18 dB and low insertion loss of 3 dB over the C-band. For further demonstration, the proposed device is tested using a modulated signal at 20 Gb/s. The eye diagrams and the bit error rates indicate a good filtering performance.

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More information

Accepted/In Press date: 1 July 2018
e-pub ahead of print date: 3 July 2018
Published date: 1 August 2018

Identifiers

Local EPrints ID: 424938
URI: https://eprints.soton.ac.uk/id/eprint/424938
ISSN: 0146-9592
PURE UUID: f418a667-e5bc-4b0c-8c3c-39ee5d7d52f5

Catalogue record

Date deposited: 05 Oct 2018 16:30
Last modified: 05 Oct 2018 16:30

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Contributors

Author: Chunlei Sun
Author: Wenhao Wu
Author: Yu Yu
Author: Xinliang Zhang
Author: Graham T. Reed

University divisions

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