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Experimental demonstration of dual O+C-band WDM transmission over 50-km SSMF with direct detection

Experimental demonstration of dual O+C-band WDM transmission over 50-km SSMF with direct detection
Experimental demonstration of dual O+C-band WDM transmission over 50-km SSMF with direct detection

In this article, we experimentally demonstrate dual O+C-band direct-detection wavelength division multiplexed (WDM) transmission over 50 km of standard single-mode fibre, wherein 4 × 40-Gb/s Nyquist on-off keying (OOK) modulation is used in the O-band whilst 4 × 40-Gb/s single-sideband (SSB) subcarrier modulation (SCM) with Kramers-Kronig (KK) detection is used in the C-band. A bismuth-doped fibre amplifier (BDFA) is used as the pre-amplifier in the O-band to extend the reach of the direct-detection system. It is demonstrated that the O-band exhibits superior receiver sensitivity relative to the C-band and its transmission performance is limited by the chromatic dispersion (CD), especially when longer reaches and wavelengths in the longer edge of the band are explored. In contrast, due to the adoption of the SSB format, the C-band shows enhanced tolerance to CD effects. In this case, some receiver sensitivity is sacrificed to accommodate the adoption of the KK detection which is used to eliminate the signal-to-signal beating interference of the SSB-SCM format. The inferior receiver sensitivity in the C-band is caused by (1) the higher CSPR requirement of the KK detection and (2) the restriction of small-signal modulation for the dual-drive Mach-Zehnder modulator to generate optical SSB signals. The results indicate the feasibility to further extend the reach of O-band transmission systems, which enables the possibility to realise dual O+C-band WDM transmission in intermediate- to long-haul optical networks.

Optical communications, point-to-point transmission, ultra-wideband WDM systems
0733-8724
2278-2284
Hong, Yang
73d5144c-02db-4977-b517-0d2f5a052807
Bottrill, Kyle
8c2e6c2d-9f14-424e-b779-43c23e2f49ac
Taengnoi, Natsupa
afc5fb3e-224b-43b3-a161-931ed77faec1
Thipparapu, Naresh Kumar
a36a2b4c-b75c-4976-a753-b5fab9e54150
Wang, Yu
629093a5-d7b6-408d-86bf-d2e754f739e6
Umnikov, Andrey A
9b57cc1b-d0f9-4c34-9409-a58ee0f70250
Sahu, Jayanta
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Richardson, David
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Petropoulos, Periklis
522b02cc-9f3f-468e-bca5-e9f58cc9cad7
Hong, Yang
73d5144c-02db-4977-b517-0d2f5a052807
Bottrill, Kyle
8c2e6c2d-9f14-424e-b779-43c23e2f49ac
Taengnoi, Natsupa
afc5fb3e-224b-43b3-a161-931ed77faec1
Thipparapu, Naresh Kumar
a36a2b4c-b75c-4976-a753-b5fab9e54150
Wang, Yu
629093a5-d7b6-408d-86bf-d2e754f739e6
Umnikov, Andrey A
9b57cc1b-d0f9-4c34-9409-a58ee0f70250
Sahu, Jayanta
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Richardson, David
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Petropoulos, Periklis
522b02cc-9f3f-468e-bca5-e9f58cc9cad7

Hong, Yang, Bottrill, Kyle, Taengnoi, Natsupa, Thipparapu, Naresh Kumar, Wang, Yu, Umnikov, Andrey A, Sahu, Jayanta, Richardson, David and Petropoulos, Periklis (2020) Experimental demonstration of dual O+C-band WDM transmission over 50-km SSMF with direct detection. Journal of Lightwave Technology, 38 (8), 2278-2284, [8950035]. (doi:10.1109/JLT.2020.2964155).

Record type: Article

Abstract

In this article, we experimentally demonstrate dual O+C-band direct-detection wavelength division multiplexed (WDM) transmission over 50 km of standard single-mode fibre, wherein 4 × 40-Gb/s Nyquist on-off keying (OOK) modulation is used in the O-band whilst 4 × 40-Gb/s single-sideband (SSB) subcarrier modulation (SCM) with Kramers-Kronig (KK) detection is used in the C-band. A bismuth-doped fibre amplifier (BDFA) is used as the pre-amplifier in the O-band to extend the reach of the direct-detection system. It is demonstrated that the O-band exhibits superior receiver sensitivity relative to the C-band and its transmission performance is limited by the chromatic dispersion (CD), especially when longer reaches and wavelengths in the longer edge of the band are explored. In contrast, due to the adoption of the SSB format, the C-band shows enhanced tolerance to CD effects. In this case, some receiver sensitivity is sacrificed to accommodate the adoption of the KK detection which is used to eliminate the signal-to-signal beating interference of the SSB-SCM format. The inferior receiver sensitivity in the C-band is caused by (1) the higher CSPR requirement of the KK detection and (2) the restriction of small-signal modulation for the dual-drive Mach-Zehnder modulator to generate optical SSB signals. The results indicate the feasibility to further extend the reach of O-band transmission systems, which enables the possibility to realise dual O+C-band WDM transmission in intermediate- to long-haul optical networks.

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Accepted/In Press date: 31 December 2019
e-pub ahead of print date: 6 January 2020
Published date: 15 April 2020
Additional Information: Funding Information: Manuscript received May 31, 2019; revised October 9, 2019; accepted December 31, 2019. Date of publication January 6, 2020; date of current version April 15, 2020. This work was supported by U.K.’s EPSRC under the Airguide Photonics Programme under Grant (EP/P030181/1) and the PHOS project (EP/S002871/1). (Corresponding author: Yang Hong.) The authors are with Optoelectronics Research Centre, The University of Southampton, Southampton SO17 1BJ, U.K. (e-mail: y.hong@soton.ac.uk; k.bottrill@soton.ac.uk; nt1a15@soton.ac.uk; nkt1d17@soton.ac.uk; yw9n17@ soton.ac.uk; a.a.umnikov@soton.ac.uk; jks@orc.soton.ac.uk; djr@orc.soton. ac.uk; pp@orc.soton.ac.uk). Publisher Copyright: © 1983-2012 IEEE.
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Keywords: Optical communications, point-to-point transmission, ultra-wideband WDM systems
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Identifiers

Local EPrints ID: 436930
URI: http://eprints.soton.ac.uk/id/eprint/436930
DOI: doi:10.1109/JLT.2020.2964155
ISSN: 0733-8724
PURE UUID: 8d8a80de-3d13-477d-8e68-274b253b1690
ORCID for Kyle Bottrill: ORCID iD orcid.org/0000-0002-9872-110X
ORCID for Naresh Kumar Thipparapu: ORCID iD orcid.org/0000-0002-5153-4737
ORCID for Andrey A Umnikov: ORCID iD orcid.org/0000-0001-6006-5410
ORCID for Jayanta Sahu: ORCID iD orcid.org/0000-0003-3560-6152
ORCID for David Richardson: ORCID iD orcid.org/0000-0002-7751-1058
ORCID for Periklis Petropoulos: ORCID iD orcid.org/0000-0002-1576-8034

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Date deposited: 14 Jan 2020 17:30
Last modified: 16 Mar 2024 04:24

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Contributors

Author: Yang Hong
Author: Kyle Bottrill ORCID iD
Author: Natsupa Taengnoi
Author: Naresh Kumar Thipparapu ORCID iD
Author: Yu Wang
Author: Andrey A Umnikov ORCID iD
Author: Jayanta Sahu ORCID iD
Author: David Richardson ORCID iD
Author: Periklis Petropoulos ORCID iD

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