Efficient Optically-Pumped Semiconductor Optical Amplifier in a Coupled-Waveguide Configuration: A Novel Proposal

We propose an efficient scheme of optical pumping and a compact design of an optically-pumped semiconductor optical amplifier (OP-SOA), with gain characteristics which are qualitatively similar to that of conventional (electrically-pumped) SOA. The optical pump is coupled into the ‘active...

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Autores principales:	Nithin Vogirala, M. Shenoy, Yogesh Kumar
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Optical pumping semiconductor optical amplifiers waveguide coupling Applied optics. Photonics TA1501-1820 Optics. Light QC350-467
Acceso en línea:	https://doaj.org/article/187baa07fc2b4386a19452879778eac5
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spelling	oai:doaj.org-article:187baa07fc2b4386a19452879778eac52021-11-03T23:00:09ZEfficient Optically-Pumped Semiconductor Optical Amplifier in a Coupled-Waveguide Configuration: A Novel Proposal1943-065510.1109/JPHOT.2021.3120846https://doaj.org/article/187baa07fc2b4386a19452879778eac52021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9580631/https://doaj.org/toc/1943-0655We propose an efficient scheme of optical pumping and a compact design of an optically-pumped semiconductor optical amplifier (OP-SOA), with gain characteristics which are qualitatively similar to that of conventional (electrically-pumped) SOA. The optical pump is coupled into the ‘active waveguide’ from an adjacent channel waveguide, called ‘pump waveguide’; by suitably tailoring the coupling between the two waveguides, selective transfer of pump power all along the active waveguide can be achieved. We show that optical pumping through the coupled-waveguide configuration is efficient over the existing schemes of optical pumping in semiconductors. The optical pump can be coupled into the pump waveguide through a separate fiber-pigtail, just as the signal is coupled to the active waveguide in commercially available SOA. Thus, the OP-SOA would be a stand-alone 3-port integrated optical device, without any electrical connections. The proposed scheme enables optical-to-optical gain control, in place of the current-controlled gain in conventional SOA. Performance characteristics of the OP-SOA are simulated for an InGaAsP/InP heterostructure device using a well-established model. It is found that for an input optical pump power of 25 dBm at the wavelength of 1310 nm, a small signal gain >30 dB is achieved at the wavelength of 1550 nm.Nithin VogiralaM. ShenoyYogesh KumarIEEEarticleOptical pumpingsemiconductor optical amplifierswaveguide couplingApplied optics. PhotonicsTA1501-1820Optics. LightQC350-467ENIEEE Photonics Journal, Vol 13, Iss 6, Pp 1-6 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Optical pumping semiconductor optical amplifiers waveguide coupling Applied optics. Photonics TA1501-1820 Optics. Light QC350-467
spellingShingle	Optical pumping semiconductor optical amplifiers waveguide coupling Applied optics. Photonics TA1501-1820 Optics. Light QC350-467 Nithin Vogirala M. Shenoy Yogesh Kumar Efficient Optically-Pumped Semiconductor Optical Amplifier in a Coupled-Waveguide Configuration: A Novel Proposal
description	We propose an efficient scheme of optical pumping and a compact design of an optically-pumped semiconductor optical amplifier (OP-SOA), with gain characteristics which are qualitatively similar to that of conventional (electrically-pumped) SOA. The optical pump is coupled into the ‘active waveguide’ from an adjacent channel waveguide, called ‘pump waveguide’; by suitably tailoring the coupling between the two waveguides, selective transfer of pump power all along the active waveguide can be achieved. We show that optical pumping through the coupled-waveguide configuration is efficient over the existing schemes of optical pumping in semiconductors. The optical pump can be coupled into the pump waveguide through a separate fiber-pigtail, just as the signal is coupled to the active waveguide in commercially available SOA. Thus, the OP-SOA would be a stand-alone 3-port integrated optical device, without any electrical connections. The proposed scheme enables optical-to-optical gain control, in place of the current-controlled gain in conventional SOA. Performance characteristics of the OP-SOA are simulated for an InGaAsP/InP heterostructure device using a well-established model. It is found that for an input optical pump power of 25 dBm at the wavelength of 1310 nm, a small signal gain >30 dB is achieved at the wavelength of 1550 nm.
format	article
author	Nithin Vogirala M. Shenoy Yogesh Kumar
author_facet	Nithin Vogirala M. Shenoy Yogesh Kumar
author_sort	Nithin Vogirala
title	Efficient Optically-Pumped Semiconductor Optical Amplifier in a Coupled-Waveguide Configuration: A Novel Proposal
title_short	Efficient Optically-Pumped Semiconductor Optical Amplifier in a Coupled-Waveguide Configuration: A Novel Proposal
title_full	Efficient Optically-Pumped Semiconductor Optical Amplifier in a Coupled-Waveguide Configuration: A Novel Proposal
title_fullStr	Efficient Optically-Pumped Semiconductor Optical Amplifier in a Coupled-Waveguide Configuration: A Novel Proposal
title_full_unstemmed	Efficient Optically-Pumped Semiconductor Optical Amplifier in a Coupled-Waveguide Configuration: A Novel Proposal
title_sort	efficient optically-pumped semiconductor optical amplifier in a coupled-waveguide configuration: a novel proposal
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/187baa07fc2b4386a19452879778eac5
work_keys_str_mv	AT nithinvogirala efficientopticallypumpedsemiconductoropticalamplifierinacoupledwaveguideconfigurationanovelproposal AT mshenoy efficientopticallypumpedsemiconductoropticalamplifierinacoupledwaveguideconfigurationanovelproposal AT yogeshkumar efficientopticallypumpedsemiconductoropticalamplifierinacoupledwaveguideconfigurationanovelproposal
_version_	1718445316877844480

Efficient Optically-Pumped Semiconductor Optical Amplifier in a Coupled-Waveguide Configuration: A Novel Proposal

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