932 resultados para Londres (GB)


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Référence bibliographique : Rol, 59928

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Ancien possesseur : Poulenc, Francis (1899-1963)

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Référence bibliographique : Rol, 61701

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Référence bibliographique : Rol, 61702

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Référence bibliographique : Rol, 61703

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An uncooled three-section tunable distributed Bragg reflector laser is demonstrated as an athermal transmitter for low-cost uncooled wavelength-division-multiplexing (WDM) systems with tight channel spacing. A ±0.02-nm thermal wavelength drift is achieved under continuous-wave operation up to 70 °C. Dynamic sidemode suppression ratio of greater than 35 dB is consistently obtained under 3.125-Gb/s direct modulation over a 20 °C-70 °C temperature range, with wavelength variation of as low as ±0.2 nm. This indicates that more than an order of magnitude reduction in coarse WDM channel spacing is possible using this source. © 2005 IEEE.