排序方式: 共有29条查询结果,搜索用时 15 毫秒
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A. J. Seeds 《Optical and Quantum Electronics》1993,25(4):219-229
The low-loss, wide-bandwidth capability of optoelectronic systems makes them attractive for the transmission and processing of microwave signals. This paper considers the technology required for generating, transmitting and detecting microwave modulated optical signals. It also reviews the developing research area of directly optically controlled microwave devices, and describes some typical microwave optoelectronic systems applications. 相似文献
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CM Silva MF Duarte ML Mira MH Florêncio K Versluis AJ Heck 《Rapid communications in mass spectrometry : RCM》1999,13(12):1098-1103
Fast atom bombardment, combined with high-energy collision-induced tandem mass spectrometry, has been used to investigate gas-phase metal-ion interactions with captopril, enalaprilat and lisinopril, all angiotensin-converting enzyme inhibitors.Suggestions for the location of metal-binding sites are presented. For captopril, metal binding occurs most likely at both the sulphur and the nitrogen atom. For enalaprilat and lisinopril, binding preferably occurs at the amine nitrogen. Copyright 1999 John Wiley & Sons, Ltd. 相似文献
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Berger Oliver Heinzelmann Robert Stöhr Andreas Jäger Dieter Huang Xuan Seeds Alwyn 《Optical and Quantum Electronics》1999,31(9-10):1031-1045
A dynamic model for the design of multi-section semiconductor lasers is developed based on the Transmission Line Method. The different building blocks of this model are presented and the model is evaluated for a tunable two-section laser device. 相似文献
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G Carpintero E Rouvalis K Lawniczuk M Fice CC Renaud XJ Leijtens EA Bente M Chitoui F Van Dijk AJ Seeds 《Optics letters》2012,37(17):3657-3659
We report the generation of a 95?GHz carrier frequency by optical heterodyning of two wavelengths from adjacent channels from an arrayed waveguide grating-based multiwavelength laser. The extended cavity structure of the device provides low phase noise and narrow optical linewidth, further enhanced by the intracavity filter effect of the arrayed waveguide grating. We demonstrate that the generated RF beat note, at 95?GHz, has a -3 dB linewidth of 250?kHz. To the best of our knowledge, this is the narrowest RF linewidth generated from a free-running dual-wavelength semiconductor laser. The device is realized as a photonic integrated circuit using active-passive integration technology, and fabricated on a multiproject wafer run, constituting a novel approach for a compact, low-cost dual-wavelength heterodyne source. 相似文献
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F. Matera F. Curti G. Tosi-Beleffi P. Franco A. Schiffini R. Corsini A. Paoletti F. Alberti M. Gloanec R. Bauknecht M. Gaspar E. Leclerc R. Boula-Picard N. Michel M. Vidmar P. Monteiro M. Violas A. Pinto H. Suche W. Sohler A. Galtarossa A. Pizzinat C. de Angelis F. Gringoli E. Burr A. J. Seeds L. Lattanzi M. Guglielmucci S. Cascelli F. Martelli A. D'Ottavi G. Contestabile 《Fiber and Integrated Optics》2002,21(5):371-389
In this article we report the main experimental results obtained in the framework of the IST ATLAS project regarding the transmission at 40 Gb/s over long terrestrial links, including the frequency conversion of a signal. We report the single-channel 40 Gb/s transmission over a link 500 km long with an amplifier spacing of 100 km, both with G.652 fibers and G.653 fibers by periodically compensating the chromatic dispersion with dispersion-compensating fibers. We report the single-channel transmission at 40 Gb/s, also, after the wavelength conversion of a channel with both PPLN and semiconductor optical amplifier devices. In particular, 500 km distances are obtained with PPLN wavelength conversion and 300 km distances with semiconductor optical amplifiers. Some results have been reported for electronic devices operating at 40 Gb/s. 相似文献