Photonic Techniques for Generating a Single RF Sideband With No Second Order Sidebands

Two structures that can realise optical single sideband modulation without generating both second order upper and lower sidebands are presented. They are based on a dual-parallel Mach Zehnder modulator (DP-MZM) with an optical filter and a dual-polarisation dual-parallel Mach Zehnder modulator (DPol...

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Autores principales:	Chongjia Huang, Erwin H. W. Chan
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2022
Materias:	Optical single-sideband modulation electro-optic modulators radio over fibre (RoF) optical vector network analyser Applied optics. Photonics TA1501-1820 Optics. Light QC350-467
Acceso en línea:	https://doaj.org/article/ab5dabc64df4406ab74e5939241328e7
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id	oai:doaj.org-article:ab5dabc64df4406ab74e5939241328e7
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spelling	oai:doaj.org-article:ab5dabc64df4406ab74e5939241328e72021-11-17T00:00:07ZPhotonic Techniques for Generating a Single RF Sideband With No Second Order Sidebands1943-065510.1109/JPHOT.2021.3123168https://doaj.org/article/ab5dabc64df4406ab74e5939241328e72022-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9591316/https://doaj.org/toc/1943-0655Two structures that can realise optical single sideband modulation without generating both second order upper and lower sidebands are presented. They are based on a dual-parallel Mach Zehnder modulator (DP-MZM) with an optical filter and a dual-polarisation dual-parallel Mach Zehnder modulator (DPol-DPMZM) with a 90° hybrid coupler. The former is an all-optical structure and hence it has a very wide bandwidth. The latter uses one DP-MZM to realise single sideband suppressed carrier modulation while the other DP-MZM simply passes the optical carrier. It also suppresses the third order sideband on the same side as the wanted fundamental RF modulation sideband. Hence, in an ideal situation, there is no second order harmonic component generated after photodetection. Experimental results are presented for the novel structures, which demonstrate the realisation of optical single sideband modulation without second order sidebands. The results also show large fundamental to second order harmonic power ratio over a wide input RF signal frequency range even after inserting a long single mode fibre into the system for signal transmission. The new optical single sideband modulators find applications in improving the multioctave spurious free dynamic range in a long-haul fibre optic link and reducing measurement errors in an optical vector analyser.Chongjia HuangErwin H. W. ChanIEEEarticleOptical single-sideband modulationelectro-optic modulatorsradio over fibre (RoF)optical vector network analyserApplied optics. PhotonicsTA1501-1820Optics. LightQC350-467ENIEEE Photonics Journal, Vol 14, Iss 1, Pp 1-9 (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Optical single-sideband modulation electro-optic modulators radio over fibre (RoF) optical vector network analyser Applied optics. Photonics TA1501-1820 Optics. Light QC350-467
spellingShingle	Optical single-sideband modulation electro-optic modulators radio over fibre (RoF) optical vector network analyser Applied optics. Photonics TA1501-1820 Optics. Light QC350-467 Chongjia Huang Erwin H. W. Chan Photonic Techniques for Generating a Single RF Sideband With No Second Order Sidebands
description	Two structures that can realise optical single sideband modulation without generating both second order upper and lower sidebands are presented. They are based on a dual-parallel Mach Zehnder modulator (DP-MZM) with an optical filter and a dual-polarisation dual-parallel Mach Zehnder modulator (DPol-DPMZM) with a 90° hybrid coupler. The former is an all-optical structure and hence it has a very wide bandwidth. The latter uses one DP-MZM to realise single sideband suppressed carrier modulation while the other DP-MZM simply passes the optical carrier. It also suppresses the third order sideband on the same side as the wanted fundamental RF modulation sideband. Hence, in an ideal situation, there is no second order harmonic component generated after photodetection. Experimental results are presented for the novel structures, which demonstrate the realisation of optical single sideband modulation without second order sidebands. The results also show large fundamental to second order harmonic power ratio over a wide input RF signal frequency range even after inserting a long single mode fibre into the system for signal transmission. The new optical single sideband modulators find applications in improving the multioctave spurious free dynamic range in a long-haul fibre optic link and reducing measurement errors in an optical vector analyser.
format	article
author	Chongjia Huang Erwin H. W. Chan
author_facet	Chongjia Huang Erwin H. W. Chan
author_sort	Chongjia Huang
title	Photonic Techniques for Generating a Single RF Sideband With No Second Order Sidebands
title_short	Photonic Techniques for Generating a Single RF Sideband With No Second Order Sidebands
title_full	Photonic Techniques for Generating a Single RF Sideband With No Second Order Sidebands
title_fullStr	Photonic Techniques for Generating a Single RF Sideband With No Second Order Sidebands
title_full_unstemmed	Photonic Techniques for Generating a Single RF Sideband With No Second Order Sidebands
title_sort	photonic techniques for generating a single rf sideband with no second order sidebands
publisher	IEEE
publishDate	2022
url	https://doaj.org/article/ab5dabc64df4406ab74e5939241328e7
work_keys_str_mv	AT chongjiahuang photonictechniquesforgeneratingasinglerfsidebandwithnosecondordersidebands AT erwinhwchan photonictechniquesforgeneratingasinglerfsidebandwithnosecondordersidebands
_version_	1718426067540115456

Photonic Techniques for Generating a Single RF Sideband With No Second Order Sidebands

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