Optical fiber amplifiers for 1.5-µm operation

Mears, R.J.; Reekie, L.; Jauncey, I.M.; Payne, D.N.

doi:10.1364/ofc.1988.thd3

Cited by 3 publications

(3 citation statements)

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“…The Journal Citation Reports about the social science and management publications covered by the Social Sciences Citation Index, which have been published by the Institute for Scientific Information for 1977 to 1987, were consulted to obtain current article impact and cumulative journal influence measures for each journal in each year for which data are available. Some unpublished data were provided by Mears (1988). For early years, ratings could not be obtained for certain journals.…”

Section: Analytical Frameworkmentioning

confidence: 99%

The development of strategic management: Journal quality and article impact

Franke

Edlund

Oster

1990

Strategic Management Journal

105

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Quality ratings of strategic management journals by experts correlate closely with objective quality measures of current article impact and cumulative journal influence. In part, journal quality seems determined by editors' research stature. Over 12 years, scholarly influence of strategic management periodicals has grown nearly three‐fold, as two new journals directed to conceptual development of management as a whole have risen to prominence. Expansion of strategic management research and growth of its influence may be in response to challenges posed by the continuing crisis of managerial and business performance.

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Section: Analytical Frameworkmentioning

confidence: 99%

The development of strategic management: Journal quality and article impact

Franke

Edlund

Oster

1990

Strategic Management Journal

105

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“…Among several possible choices of devices, rare-earth-doped amplifiers have implied high-power conversion effi-ciency than Raman and scalability of gain spectra by tailoring the host-glass composition. In telecommunication systems, the invention of the EDFA [1] can be likened to that of the transistors in electronics in terms of its technological impact. The technology to amplify the light signal directly without the conversion of light/electricity/light has been achieved by stimulated emission of 4f optical transition in rare-earth-doped fibers [2], which realizes ideal amplification with high gain and low noise.…”

Section: Introductionmentioning

confidence: 99%

Rare-earth-doped glasses for fiber amplifiers in broadband telecommunication

Tanabe

2002

Comptes Rendus. Chimie

214

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Rare-earth-doped optical amplifiers have a great potential for broadband Wavelength-Division-Multiplexed (WDM) telecommunication by tailoring host glass compositions. In order to design the emission spectra of doped rare-earth ions, it is important to understand the relationship between the local ligand field and various optical properties of specific 4f-levels, such as the radiative transition probability, the nonradiative decay probability, which dominate the spectral line width and quantum efficiency of amplification transitions. For the Er 3+ :1.55 µm transition, the role of the Judd-Ofelt X 6 parameters is presented, which is correlated to the Er-ligand bond covalency in glasses. The Tm 3+ : 1.46-µm transition shows quantum efficiency over 90% high enough for the S-band application, in heavy metal oxide glasses with moderate phonon energy and wider spectra than fluorides. A way to improve population inversion by selective energy transfer with codoped lanthanide ions is presented. Finally, the energy level structures and resultant spectral properties of Pr 3+ , Nd 3+ and Dy 3+ ions, 1.3-µm-active ions, are compared. The hypersensitivity of Dy 3+ transitions appears especially in chalcogenide glasses, where the nonradiative loss due to multiphonon decay is also minimized. In conclusion, glass materials have opportunities to vary the radiative cross section, quantum efficiency, and gain flatness, which are important for novel amplifiers in the future DWDM system. To cite this article: S. Tanabe, C. R. Chimie 5 (2002) 815-824 © 2002 Académie des sciences / Éditions scientifiques et médicales Elsevier SAS rare earths / glass / optical amplifier / telecommunication / Wavelength-Division Multiplexing / optical fiber Résumé -Les télécommunications à large bande basées sur le multiplexage en division de longueur d'onde (WDM) font appel à des amplificateurs optiques dopés avec des terres rares. Le spectre d'émission de ces terres rares peut être ajusté en modifiant la composition du verre. Il faut pour cela connaître la relation entre le champ local et les caractéristiques optiques des niveaux concernés, en particulier les probabilités de transition radiative et de désexcitation non radiative, qui déterminent la largeur spectrale et le rendement quantique des transitions. Le rôle du paramètre de Judd-Ofeld X 6 dans la transition de l'erbium à 1,55 µm est corrélé à la covalence de la liaison Er-ligande dans le verre. Les transitions du Tm 3+ pour la bande S et celle des ions Pr 3+ , Nd 3+ et Dy 3+ à 1,3 µm sont également abordées et discutées. Dans les matériaux vitreux, on peut ainsi faire varier la section efficace radiative, le rendement quantique et la constance du gain, ce qui peut se révéler important pour les nouveaux amplificateurs dans les futurs systèmes DWDM. Pour citer cet article : S. Tanabe, C. R. Chimie 5 (2002) 815-824 © 2002 Académie des sciences / Éditions scientifiques et médicales Elsevier SAS terres rares / verre / amplificateur optique / télécommunication / Wavelength-Division Multiplexing (WDM) /...

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“…Important characteristics of high-power fiber lasers for certain applications are a single-mode operation, a single polarization, a narrow linewidth output, and a broad tunability [1][2][3][4][5]. Several tens of watts of diffraction-limited power available from cladding-pumped ytterbium-doped fiber lasers operating in the region of 1.0-1.1 µ m [6] makes them attractive for the nonlinear frequency conversion via frequency doubling (SHG) and via the pumping of the optical parametric oscillators (OPOs) and optical power amplifiers (OPAs) [7].…”

Section: Introductionmentioning

confidence: 99%

Linear polarization Yb3+-doped fiber laser with novel innerclad structures

et al. 2008

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Results on high radiance Yb 3+ -doped fiber lasers with novel double innerclad structures (double-D clad and four hole) and polarized output at ~1090 nm are presented. We have demonstrated >40% of the total output power being polarized, making the fiber laser suitable for LIDAR and second-harmonic generation (SHG) applications. It also showed a 10-nm tuning range with low (less than 10 mW) average power variations. The narrow linewidth source was pumped with a low cost, low brightness laser diode, and exhibited a relatively low slope efficiency, which gives room for improvement by using a 976-nm pump source where Yb 3+ has a narrower linewidth and at least five times higher absorption.

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Optical fiber amplifiers for 1.5-µm operation

Cited by 3 publications

References 0 publications

The development of strategic management: Journal quality and article impact

The development of strategic management: Journal quality and article impact

Rare-earth-doped glasses for fiber amplifiers in broadband telecommunication

Linear polarization Yb3+-doped fiber laser with novel innerclad structures

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