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Conference Paper: Gain optimization of Raman-mediated fiber optical parametric amplifier

TitleGain optimization of Raman-mediated fiber optical parametric amplifier
Authors
KeywordsFour-Wave Mixing (FWM)
Optical Amplifiers
Optical Fibers
Parametric Amplifier
Raman Amplifier
Issue Date2006
PublisherSPIE - International Society for Optical Engineering. The Journal's web site is located at http://spie.org/x1848.xml
Citation
Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications V, San Jose, CA., 25-26 January 2006. In Proceedings of SPIE - The International Society For Optical Engineering, 2006, v. 6103, p. 61030S:1-61030S:10 How to Cite?
AbstractFiber optical parametric amplifiers (OPAs) and Raman amplifiers (RAs) are both based on the third-order nonlinear susceptibility of glass fibers. Recently, there have been some efforts to combine these two nonlinear phenomena in order to extend the amplification and wavelength conversion windows to the S-band, or to lower the required parametric pump power in order to achieve the same signal gain. We propose a new technique utilizing these two amplication principles in a single piece of highly-nonlinear dispersion-shifted fiber (HNL-DSF). We call this Raman-mediated fiber OPA (RM-OPA), which is different from the previous Raman-assisted OPA (RA-OPA) work. The previously investigated RA-OPA required an extra Raman pump with power around 1 W, on top of the erbium-doped fiber amplifier (EDFA) required to amplify the OPA pump. Therefore, Raman amplification was simply employed as a power booster for the OPA pump, i.e. RA "assists" OPA. On the other hand, our new approach does not require an extra EDFA as pre-amplifier, and the single piece of HNL-DSF provides both RA and OPA effects. In other words, there is essentially no parametric amplification without the presence of the Raman pump. While combining RA and OPA have been investigated both analytically and experimentally before, it involved only introducing some extra Raman terms in the nonlinear Schrödinger equations (NLSE) additively, which is sufficient for the case when one pump is used to amplify the signal (and idler) through both RA and OPA. However, the situation is significantly different here, where the parametric pump is amplified by the RA, while the OPA gain varies along the gain medium as the parametric pump power itself is a function of the distance along the HNL-DSF. In this paper, we will present an approximate analytical model for this RM-OPA, in a co-propagating configuration. Through certain simplifying assumptions, we produce closed-form equations allowing intuitive insights into the RM-OPA operation, given the coupling amongst the parametric pump, Raman pump, signal and idler. These equations provide a framework for optimizing such kind of fiber amplifiers. Important RM-OPA design guidelines are also discussed.
Persistent Identifierhttp://hdl.handle.net/10722/99366
ISSN
References

 

DC FieldValueLanguage
dc.contributor.authorCheung, KYHen_HK
dc.contributor.authorWong, KKYen_HK
dc.contributor.authorWong, Nen_HK
dc.contributor.authorMarhic, MEen_HK
dc.date.accessioned2010-09-25T18:27:01Z-
dc.date.available2010-09-25T18:27:01Z-
dc.date.issued2006en_HK
dc.identifier.citationNonlinear Frequency Generation and Conversion: Materials, Devices, and Applications V, San Jose, CA., 25-26 January 2006. In Proceedings of SPIE - The International Society For Optical Engineering, 2006, v. 6103, p. 61030S:1-61030S:10en_HK
dc.identifier.issn0277-786X-
dc.identifier.urihttp://hdl.handle.net/10722/99366-
dc.description.abstractFiber optical parametric amplifiers (OPAs) and Raman amplifiers (RAs) are both based on the third-order nonlinear susceptibility of glass fibers. Recently, there have been some efforts to combine these two nonlinear phenomena in order to extend the amplification and wavelength conversion windows to the S-band, or to lower the required parametric pump power in order to achieve the same signal gain. We propose a new technique utilizing these two amplication principles in a single piece of highly-nonlinear dispersion-shifted fiber (HNL-DSF). We call this Raman-mediated fiber OPA (RM-OPA), which is different from the previous Raman-assisted OPA (RA-OPA) work. The previously investigated RA-OPA required an extra Raman pump with power around 1 W, on top of the erbium-doped fiber amplifier (EDFA) required to amplify the OPA pump. Therefore, Raman amplification was simply employed as a power booster for the OPA pump, i.e. RA "assists" OPA. On the other hand, our new approach does not require an extra EDFA as pre-amplifier, and the single piece of HNL-DSF provides both RA and OPA effects. In other words, there is essentially no parametric amplification without the presence of the Raman pump. While combining RA and OPA have been investigated both analytically and experimentally before, it involved only introducing some extra Raman terms in the nonlinear Schrödinger equations (NLSE) additively, which is sufficient for the case when one pump is used to amplify the signal (and idler) through both RA and OPA. However, the situation is significantly different here, where the parametric pump is amplified by the RA, while the OPA gain varies along the gain medium as the parametric pump power itself is a function of the distance along the HNL-DSF. In this paper, we will present an approximate analytical model for this RM-OPA, in a co-propagating configuration. Through certain simplifying assumptions, we produce closed-form equations allowing intuitive insights into the RM-OPA operation, given the coupling amongst the parametric pump, Raman pump, signal and idler. These equations provide a framework for optimizing such kind of fiber amplifiers. Important RM-OPA design guidelines are also discussed.-
dc.languageengen_HK
dc.publisherSPIE - International Society for Optical Engineering. The Journal's web site is located at http://spie.org/x1848.xml-
dc.relation.ispartofSPIE - International Society for Optical Engineering Proceedingsen_HK
dc.subjectFour-Wave Mixing (FWM)-
dc.subjectOptical Amplifiers-
dc.subjectOptical Fibers-
dc.subjectParametric Amplifier-
dc.subjectRaman Amplifier-
dc.titleGain optimization of Raman-mediated fiber optical parametric amplifieren_HK
dc.typeConference_Paperen_HK
dc.identifier.emailWong, KKY: kywong@eee.hku.hken_HK
dc.identifier.emailWong, N: nwong@eee.hku.hken_HK
dc.identifier.authorityWong, KKY=rp00189en_HK
dc.identifier.authorityWong, N=rp00190en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1117/12.644039-
dc.identifier.scopuseid_2-s2.0-33646012666-
dc.identifier.hkuros116325en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33646012666&selection=ref&src=s&origin=recordpage-
dc.identifier.volume6103en_HK
dc.identifier.spage61030S:1en_HK
dc.identifier.epage61030S:10en_HK
dc.publisher.placeUnited States-
dc.identifier.scopusauthoridCheung, HKY=13006332700-
dc.identifier.scopusauthoridWong, KKY=36456599700-
dc.identifier.scopusauthoridWong, N=35235551600-
dc.identifier.scopusauthoridMarhic, ME=7006249671-
dc.customcontrol.immutablesml 160111 - merged-

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