Optical phase‐sensitive amplification of higher‐order QAM signal with single Mach–Zehnder amplitude modulator

Abstract An optical phase‐sensitive amplifier (PSA) has the potential of low‐noise optical amplification. A frequency non‐degenerate PSA (ND‐PSA) can amplify arbitrary modulation formats including higher‐order QAM. The ND‐PSA requires a co‐propagating phase conjugated light (idler light) that has be...

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Autores principales:	S. Shimizu, T. Kobayashi, T. Kazama, T. Umeki, K. Enbutsu, R. Kasahara, Y. Miyamoto
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/c60edad2434c4227b02d44dd00532a77
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spelling	oai:doaj.org-article:c60edad2434c4227b02d44dd00532a772021-11-16T10:18:22ZOptical phase‐sensitive amplification of higher‐order QAM signal with single Mach–Zehnder amplitude modulator1350-911X0013-519410.1049/ell2.12002https://doaj.org/article/c60edad2434c4227b02d44dd00532a772021-01-01T00:00:00Zhttps://doi.org/10.1049/ell2.12002https://doaj.org/toc/0013-5194https://doaj.org/toc/1350-911XAbstract An optical phase‐sensitive amplifier (PSA) has the potential of low‐noise optical amplification. A frequency non‐degenerate PSA (ND‐PSA) can amplify arbitrary modulation formats including higher‐order QAM. The ND‐PSA requires a co‐propagating phase conjugated light (idler light) that has been conventionally created with an optical phase conjugator at the transmitter side. We propose a transmitter configuration using simultaneous signal generation of both a signal and its idler by double‐sideband modulation for transmission systems with ND‐PSAs. The proposed scheme provides a simple configuration with a single Mach–Zehnder amplitude modulator without optically creating the idler light. We performed experiments using 16QAM, 32QAM, and probabilistically shaped 256QAM signals. As a result, a phase‐sensitive amplification with each modulation format was successfully demonstrated using the proposed transmitter configuration.S. ShimizuT. KobayashiT. KazamaT. UmekiK. EnbutsuR. KasaharaY. MiyamotoWileyarticleElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENElectronics Letters, Vol 57, Iss 1, Pp 32-33 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Electrical engineering. Electronics. Nuclear engineering TK1-9971 S. Shimizu T. Kobayashi T. Kazama T. Umeki K. Enbutsu R. Kasahara Y. Miyamoto Optical phase‐sensitive amplification of higher‐order QAM signal with single Mach–Zehnder amplitude modulator
description	Abstract An optical phase‐sensitive amplifier (PSA) has the potential of low‐noise optical amplification. A frequency non‐degenerate PSA (ND‐PSA) can amplify arbitrary modulation formats including higher‐order QAM. The ND‐PSA requires a co‐propagating phase conjugated light (idler light) that has been conventionally created with an optical phase conjugator at the transmitter side. We propose a transmitter configuration using simultaneous signal generation of both a signal and its idler by double‐sideband modulation for transmission systems with ND‐PSAs. The proposed scheme provides a simple configuration with a single Mach–Zehnder amplitude modulator without optically creating the idler light. We performed experiments using 16QAM, 32QAM, and probabilistically shaped 256QAM signals. As a result, a phase‐sensitive amplification with each modulation format was successfully demonstrated using the proposed transmitter configuration.
format	article
author	S. Shimizu T. Kobayashi T. Kazama T. Umeki K. Enbutsu R. Kasahara Y. Miyamoto
author_facet	S. Shimizu T. Kobayashi T. Kazama T. Umeki K. Enbutsu R. Kasahara Y. Miyamoto
author_sort	S. Shimizu
title	Optical phase‐sensitive amplification of higher‐order QAM signal with single Mach–Zehnder amplitude modulator
title_short	Optical phase‐sensitive amplification of higher‐order QAM signal with single Mach–Zehnder amplitude modulator
title_full	Optical phase‐sensitive amplification of higher‐order QAM signal with single Mach–Zehnder amplitude modulator
title_fullStr	Optical phase‐sensitive amplification of higher‐order QAM signal with single Mach–Zehnder amplitude modulator
title_full_unstemmed	Optical phase‐sensitive amplification of higher‐order QAM signal with single Mach–Zehnder amplitude modulator
title_sort	optical phase‐sensitive amplification of higher‐order qam signal with single mach–zehnder amplitude modulator
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/c60edad2434c4227b02d44dd00532a77
work_keys_str_mv	AT sshimizu opticalphasesensitiveamplificationofhigherorderqamsignalwithsinglemachzehnderamplitudemodulator AT tkobayashi opticalphasesensitiveamplificationofhigherorderqamsignalwithsinglemachzehnderamplitudemodulator AT tkazama opticalphasesensitiveamplificationofhigherorderqamsignalwithsinglemachzehnderamplitudemodulator AT tumeki opticalphasesensitiveamplificationofhigherorderqamsignalwithsinglemachzehnderamplitudemodulator AT kenbutsu opticalphasesensitiveamplificationofhigherorderqamsignalwithsinglemachzehnderamplitudemodulator AT rkasahara opticalphasesensitiveamplificationofhigherorderqamsignalwithsinglemachzehnderamplitudemodulator AT ymiyamoto opticalphasesensitiveamplificationofhigherorderqamsignalwithsinglemachzehnderamplitudemodulator
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Optical phase‐sensitive amplification of higher‐order QAM signal with single Mach–Zehnder amplitude modulator

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