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1.55 μm strained layer multiple quantum well DFB-lasers with low chirp and low distortions for optical analog CATV distribution systems

Autor: R. Weinmann, Gert Laube, M. Klenk, U. Cebulla, J. Bouayad, E. Zielinski, H. Haisch, H.P. Mayer

Publikováno v: Fiber and Integrated Optics. 13:241-245

Strained layer multiple quantum-well 1.55 μm DFB-lasers with extremely low chirp and low intermodulation distortions were made. System experiments with transmission of more than 35 analog modulated TV and Radio carriers over 32 km of standard fiber

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::66d1066d81b2241ec3624c1b0fa8afd0
https://doi.org/10.1080/01468039408202233

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Analysis of transcription factors binding to the duplicated PEA1 and PEA3 sites that are required for polyomavirus mutant expression in PCC4 embryonic carcinoma cells

Autor: R Weinmann, D Blangy, F Melin, J Y Nothias

Publikováno v: Journal of Virology. 67:3036-3047

Embryonic carcinoma (EC) cell lines, representative of early embryonic undifferentiated cells, are nonpermissive for polyomavirus (PyV) infection as a result of a blockade of viral DNA early transcription and replication. All enhancers of PyV mutants

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e80df8e3da650336a9ac8a530cdf307e
https://doi.org/10.1128/jvi.67.6.3036-3047.1993

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Low-chirp highly linear 1.55 mu m strained-layer MQW DFB lasers for optical analog TV distribution systems

Autor: M. Klenk, Gert Laube, U. Cebulla, E. Zielinski, H. Haisch, J. Bouayad-Amine, R. Weinmann, P. Speier, H.P. Mayer

Publikováno v: IEEE Journal of Quantum Electronics. 29:1782-1791

The design and realization of highly linear 1.5- mu m distributed-feedback (DFB) lasers for optical analog TV distribution systems based on dispersive single-mode fibers are reported. A simple and comprehensive model relating grating characteristics

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c9e1f3ec74f577f2df7c871838d57e1b
https://doi.org/10.1109/3.234434

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Enhancer element at the 3'-flanking region controls transcriptional response to hypoxia in the human erythropoietin gene

Autor: S. Ramirez, I. Beck, R Weinmann, Jaime Caro

Publikováno v: Journal of Biological Chemistry. 266:15563-15566

Erythropoietin gene expression is greatly stimulated under conditions of hypoxia. The activation of the erythropoietin gene appears regulated primarily at the level of gene transcription. To study cis-acting elements involved in the response to hypox

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::892686b434549104bc7e37532e915950
https://doi.org/10.1016/s0021-9258(18)98438-3

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MOVPE of In(GaAs)P/InGaAs MQW structures

Autor: U. Koerner, E. Zielinski, P. Speier, R. Weinmann, W. Körber, P. Wiedemann, M. Klenk

Publikováno v: Journal of Crystal Growth. 107:561-566

We report on MOVPE growth of In(GaAs)P/InGaAs multi-quantum-well (MQW) structures. The growth was carried out at a reactor pressure of 20 hPa in an horizontal lamp heated cold wall reactor with rectangular inner liner tube using as group III elements

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5ee6f58eab8a5ff644dfe773900806c1
https://doi.org/10.1016/0022-0248(91)90521-6

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Highly linear 1.55μm strained-layer MQW DFB Lasers for Optical Analog TV Distribution Systems

Autor: P. Speier, G. Laube, U. Cebulla, H.P. Mayer, J. Bouayad-Amine, E. Zielinski, H. Haisch, M. Klenk, R. Weinmann

Publikováno v: 13th IEEE International Semiconductor Laser Conference.

We have realized highly linear 1.55/spl mu/m DFB lasers with CSO as low as -67dBc, CM below -71dBc (BK450FO German TELEKOM), and low FM-response down to 70MHz/MAL by using strained-layer MQWs and an improved grating structure.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1799aa137913d963609cc64f9247755e
https://doi.org/10.1109/islc.1992.763635

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