Výsledky vyhledávání - "Claude Brehm"

New scattering method for the measurement of optical fiber outer dimension

Publikováno v: SPIE Proceedings.

A new contactless method is presented to measure the variations in the outer diameter of an optical fiber. The fiber is illuminated by a cw He-Ne laser beam that is perpendicular to its axis. The technique is based on an analysis of the light scatter

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::503d047c717e7e9d159793461e6be0c2
https://doi.org/10.1117/12.250808

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Low-loss single-mode fiber with high nonlinear effective area

Autor: Pascale Nouchi, S. Landais, G. Barre, Pierre Sansonetti, J.J. Girard, B. Perrin, J. Y. Boiort, Jacques Auge, Claude Brehm

Publikováno v: Optical Fiber Communications Conference.

The fiber nonlinear effective area is a key parameter in long-haul optically amplified single-mode fiber transmission systems (NRZ or soliton): high effective area lowers nonlinear effects, thus allowing larger signal power (1 dB for a 55-to-70-μm2

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::418ff04c71ce1fd8d6a318c16fa619f6
https://doi.org/10.1364/ofc.1995.thh2

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Parametric study of depressed inner cladding single-mode fibers

Autor: L. Jeunhomme, C. Le Sergent, J. Auge, Claude Brehm

Publikováno v: Journal of Lightwave Technology. 3:767-772

A parametric study on the depressed inner cladding (DIC) single-mode fibers shows the influence of the inner-cladding diameter on the effective cutoff wavelengths of the first two modes, determining a practical transmission window. The set of curves

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ff17bffdc700b7d749337f7dfbe6b824
https://doi.org/10.1109/jlt.1985.1074258

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Étude des propriétés des fibres unimodales à gaine interne déprimée

Autor: Jean-Yves Boniort, J. J. Bernard, J. M. Gabriagues, M. Monerie, C. Le Sergent, Ph. Dupont, Claude Brehm, P.L. Francois, Michel Liegois, P. Sansonetti

Publikováno v: Annales des Télécommunications. 38:47-52

Cet article presente un certain nombre de resultats obtenus lors d’une etude experimentale des fibres a gaine interne deprimee (type W). Il se confirme que ces fibres permettent de parvenir a un faible affaiblissement et une faible dispersion dans

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::28a08cab9edcd3d33b06860063f32119
https://doi.org/10.1007/bf02996056

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Crystal growth of strontium barium niobate BaxSr1−xNb2O6

Autor: G. Desplanches, P. Margotin, Claude Brehm, Jean-Yves Boniort, J.-Y. Barraud

Publikováno v: Journal of Crystal Growth. 30:357-362

Study of solid state reactions which occur during the synthesis of barium strontium niobate revealed the presence of a previously unrecorded monoclinic phase belonging to the P21/a space group in coexistence with the desired tetragonal phase. Under c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ceb8de18f5b22c943fc24f190ad67102
https://doi.org/10.1016/0022-0248(75)90012-3

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Improved drawing conditions for very low loss 1.55-μm dispersion-shifted fiber

Autor: G. Lavanant, P. Ledoux, M. Carratt, Claude Brehm, R. Jocteur, J. M. Saugrain, P. Dupont, C. Le Sergent, C. Reinaudo

Publikováno v: Fiber and Integrated Optics. 7:333-341

Fiber drawing conditions (temperature, speed, tension) have been investigated to reach very low losses (0.20 dB/km at 1.55 μm) with MCVD triangular core-profile preforms. Such dispersion-shifted fibers exhibit good mechanical, splicing, cabling, and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::57a52d924439620ee8566da7ce1ce661
https://doi.org/10.1080/01468038808221288

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Accroissement d’atténuation prévisible sur des fibres unimodales placées en atmosphère d’hydrogène

Autor: Claude Brehm, Philippe Ledoux, Philippe Dupont, Robert Jocteur, Sylvie Landais

Publikováno v: Annales des Télécommunications. 41:551-555

Cet article decrit le comportement a diverses temperatures et en atmosphere d’hydrogene de fibres unimodales a caeur dope au GeO2 et a gaine compensee, optimisees soit pour 1,3 μm soit pour 1,55 μm. Dans le câble sousmarin mis en aeuvre, l’acc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::079b93157efb9f1c545c0d76ed8acd21
https://doi.org/10.1007/bf02997853

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Segregation of impurities and striation in single crystals of double niobates BaxSr1−xNb2O6 and Ba2NaNb5O15

Autor: Jean-Yves Boniort, Claude Brehm, Pierre Margotin

Publikováno v: Journal of Crystal Growth. 18:191-195

Heterogeneities of refractive index, striae, in single crystals of double niobate such as Ba x Sr 1−x Nb 2 O 6 and Ba 2 NaNb 5 O 15 , are a major reason for limiting the optical quality of these materials, so that large volume applications are not

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5625beb047fe25e9ae8641795249664d
https://doi.org/10.1016/0022-0248(73)90199-1

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Improved drawing conditions for very low-loss 1.55-µm dispersion-shifted fiber

Autor: R. Jocteur, Claude Brehm, C. Le Sergent, M. Carratt, G. Lavanant, C. Reinaudo, D. Dupont, J. M. Saugrain

Publikováno v: Optical Fiber Communication.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2cf59ef9b955bea95efaa15773841f45
https://doi.org/10.1364/ofc.1988.wi4

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