Independent Amplitude and Phase Control of Two Orthogonal Linearly Polarised Light and Its Applications

A technique to provide independent control on the amplitude and phase of two orthogonal linearly polarised light is presented. It is based on operating a commercial dual-polarisation dual-drive Mach Zehnder modulator (DPol-DDMZM) in reverse direction that routes the input light in slow and fast axis...

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Autores principales:	Hao Chen, Erwin H. W. Chan
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Optical modulators microwave photonics phase shifter Hilbert transformer orthogonal polarisation state Applied optics. Photonics TA1501-1820 Optics. Light QC350-467
Acceso en línea:	https://doaj.org/article/0b78e536aa374caa8adfcaae29fd749e
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spelling	oai:doaj.org-article:0b78e536aa374caa8adfcaae29fd749e2021-11-03T23:00:10ZIndependent Amplitude and Phase Control of Two Orthogonal Linearly Polarised Light and Its Applications1943-065510.1109/JPHOT.2021.3121655https://doaj.org/article/0b78e536aa374caa8adfcaae29fd749e2021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9582793/https://doaj.org/toc/1943-0655A technique to provide independent control on the amplitude and phase of two orthogonal linearly polarised light is presented. It is based on operating a commercial dual-polarisation dual-drive Mach Zehnder modulator (DPol-DDMZM) in reverse direction that routes the input light in slow and fast axis into two different DDMZMs. The technique has the advantage of controlling the phase of the slow-axis light and the amplitude of the fast-axis light has no effect on the light travelling in the orthogonal polarisation state. It has applications in linearised microwave photonic links, frequency multipliers and microwave phase shifters. A new microwave photonic Hilbert transformer based on using the reverse operating DPol-DDMZM to alter the phase of an RF modulation sideband without affecting the orthogonally polarised optical carrier is developed. Experimental results demonstrate 24.3 dB attenuation in the fast-axis light with no change in the slow-axis light, and 0°–360° RF phase shift for only 3.3 V change in DC voltage. The new Hilbert transformer with less than 2.5° phase imbalance and 0.4 dB amplitude ripples over 4–18 GHz frequency range is also demonstrated.Hao ChenErwin H. W. ChanIEEEarticleOptical modulatorsmicrowave photonicsphase shifterHilbert transformerorthogonal polarisation stateApplied optics. PhotonicsTA1501-1820Optics. LightQC350-467ENIEEE Photonics Journal, Vol 13, Iss 6, Pp 1-6 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Optical modulators microwave photonics phase shifter Hilbert transformer orthogonal polarisation state Applied optics. Photonics TA1501-1820 Optics. Light QC350-467
spellingShingle	Optical modulators microwave photonics phase shifter Hilbert transformer orthogonal polarisation state Applied optics. Photonics TA1501-1820 Optics. Light QC350-467 Hao Chen Erwin H. W. Chan Independent Amplitude and Phase Control of Two Orthogonal Linearly Polarised Light and Its Applications
description	A technique to provide independent control on the amplitude and phase of two orthogonal linearly polarised light is presented. It is based on operating a commercial dual-polarisation dual-drive Mach Zehnder modulator (DPol-DDMZM) in reverse direction that routes the input light in slow and fast axis into two different DDMZMs. The technique has the advantage of controlling the phase of the slow-axis light and the amplitude of the fast-axis light has no effect on the light travelling in the orthogonal polarisation state. It has applications in linearised microwave photonic links, frequency multipliers and microwave phase shifters. A new microwave photonic Hilbert transformer based on using the reverse operating DPol-DDMZM to alter the phase of an RF modulation sideband without affecting the orthogonally polarised optical carrier is developed. Experimental results demonstrate 24.3 dB attenuation in the fast-axis light with no change in the slow-axis light, and 0°–360° RF phase shift for only 3.3 V change in DC voltage. The new Hilbert transformer with less than 2.5° phase imbalance and 0.4 dB amplitude ripples over 4–18 GHz frequency range is also demonstrated.
format	article
author	Hao Chen Erwin H. W. Chan
author_facet	Hao Chen Erwin H. W. Chan
author_sort	Hao Chen
title	Independent Amplitude and Phase Control of Two Orthogonal Linearly Polarised Light and Its Applications
title_short	Independent Amplitude and Phase Control of Two Orthogonal Linearly Polarised Light and Its Applications
title_full	Independent Amplitude and Phase Control of Two Orthogonal Linearly Polarised Light and Its Applications
title_fullStr	Independent Amplitude and Phase Control of Two Orthogonal Linearly Polarised Light and Its Applications
title_full_unstemmed	Independent Amplitude and Phase Control of Two Orthogonal Linearly Polarised Light and Its Applications
title_sort	independent amplitude and phase control of two orthogonal linearly polarised light and its applications
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/0b78e536aa374caa8adfcaae29fd749e
work_keys_str_mv	AT haochen independentamplitudeandphasecontroloftwoorthogonallinearlypolarisedlightanditsapplications AT erwinhwchan independentamplitudeandphasecontroloftwoorthogonallinearlypolarisedlightanditsapplications
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Independent Amplitude and Phase Control of Two Orthogonal Linearly Polarised Light and Its Applications

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