Design of a Multipurpose Photonic Chip Architecture for THz Dual-Comb Spectrometers

Betancur Pérez, Andrés Felipe; Martín Mateos, Pedro; Dios Fernández, Cristina de; Acedo Gallardo, Pablo

Publication:
Design of a Multipurpose Photonic Chip Architecture for THz Dual-Comb Spectrometers

dc.affiliation.dpto	UC3M. Departamento de Tecnología Electrónica	es
dc.affiliation.grupoinv	UC3M. Grupo de Investigación: Sensores y Técnicas de Instrumentación	es
dc.contributor.author	Betancur Pérez, Andrés Felipe
dc.contributor.author	Martín Mateos, Pedro
dc.contributor.author	Dios Fernández, Cristina de
dc.contributor.author	Acedo Gallardo, Pablo
dc.contributor.funder	European Commission	en
dc.contributor.funder	Ministerio de Economía y Competitividad (España)	es
dc.date.accessioned	2021-07-22T11:08:47Z
dc.date.available	2021-07-22T11:08:47Z
dc.date.issued	2020-11-01
dc.description	This article belongs to the Special Issue Terahertz Sensing and Imaging Technologies.	en
dc.description.abstract	In this work, we present a multipurpose photonic integrated circuit capable of generating multiheterodyne complex Dual-Combs (DC) THz signals. Our work focuses on translating the functionality of an electro-optic tunable DC system into a photonic chip employing standard building blocks to ensure the scalability and cost efficiency of the integrated device. The architecture we analyze for integration is based on three stages: a seed comb, a mode selection stage and a DC stage. This final DC stage includes a frequency shifter, a key element to improve the final detection of the THz signals and obtain real-time operation. This investigation covers three key aspects: (1) a solution for comb line selection on GHz spaced combs using OIL or OPLL on photonic chips is studied and evaluated, (2) a simple and versatile scheme to produce a frequency shift using the double sideband suppressed carrier modulation technique and an asymmetric Mach Zehnder Interferometer to filter one of the sidebands is proposed, and (3) a multipurpose architecture that can offer a versatile effective device, moving from application-specific PICs to general-purpose PICs. Using the building blocks (BBs) available from an InP-based foundry, we obtained simulations that offer a high-quality Dual-Comb frequency shifted signal with a side mode suppression ratio around 21 dB, and 41 dB after photodetection with an intermediate frequency of 1 MHz. We tested our system to generate a Dual-Comb with 10 kHz of frequency spacing and an OOK modulation with 5 Gbps which can be down-converted to the THz range by a square law detector. It is also important to note that the presented architecture is multipurpose and can also be applied to THz communications. This design is a step to enable a commercial THz photonic chip for multiple applications such as THz spectroscopy, THz multispectral imaging and THz telecommunications and offers the possibility of being fabricated in a multi-project wafer.	en
dc.description.sponsorship	This research was supported by Instituto Tecnológico Metropolitano, Universidad Carlos III de Madrid, the EU H2020 Celta project under Grant Agreement 675683, by the Spanish Ministry of Economy and Competitiveness under Project TEC2017-86271-R and by the ATTRACT project funded by the EC under Grant Agreement 777222.	en
dc.format.extent	14
dc.identifier.bibliographicCitation	Betancur-Pérez, A., Martín-Mateos, P., Dios, C. D. & Acedo, P. (2020). Design of a Multipurpose Photonic Chip Architecture for THz Dual-Comb Spectrometers. Sensors, 20(21), 6089.	en
dc.identifier.doi	https://doi.org/10.3390/s20216089
dc.identifier.issn	1424-8220
dc.identifier.publicationfirstpage	6089
dc.identifier.publicationissue	21
dc.identifier.publicationtitle	Sensors	en
dc.identifier.publicationvolume	20
dc.identifier.uri	https://hdl.handle.net/10016/33136
dc.identifier.uxxi	AR/0000027728
dc.language.iso	eng
dc.publisher	MDPI
dc.relation.projectID	info:eu-repo/grantAgreement/EC/675683
dc.relation.projectID	info:eu-repo/grantAgreement/EC/777222
dc.relation.projectID	Gobierno de España. TEC2017-86271-R
dc.rights	© 2020 by the authors.	en
dc.rights	Atribución 3.0 España	*
dc.rights.accessRights	open access	en
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/es/	*
dc.subject.eciencia	Electrónica	es
dc.subject.other	Dual-comb	en
dc.subject.other	Frequency shifter	en
dc.subject.other	Optical combs	en
dc.subject.other	Optical injection locking	en
dc.subject.other	Photonic integrated circuit	en
dc.subject.other	THZ spectroscopy	en
dc.title	Design of a Multipurpose Photonic Chip Architecture for THz Dual-Comb Spectrometers	en
dc.type	research article	*
dc.type.hasVersion	VoR	*
dspace.entity.type	Publication