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Sökning: WFRF:(Fonjallaz P Y)

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  • Drummond, M. V., et al. (författare)
  • Novel opto-electrical tunable dispersion compensator for IM signals
  • 2009
  • Ingår i: 2009 35th European Conference on Optical Communication (ECOC). - : VDE Verlag GmbH. - 9783800731732 ; , s. 5287374-
  • Konferensbidrag (refereegranskat)abstract
    • A novel opto-electrical tunable dispersion compensator with a tuning time lower than 150 s is proposed and experimentally demonstrated. Compensation of 0-340 ps/nm for a 40 Gb/s NRZ signal is achieved.
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  • Adomat, M, et al. (författare)
  • Step-wise tunability of a DBR laser with a superimposed fiber grating external cavity
  • 2000
  • Ingår i: Proceedings of OFC 2000 - Optical Fiber Communication Conference, 196, (2000).. ; , s. 196-198
  • Konferensbidrag (refereegranskat)abstract
    • A DBR laser is step-wise tunable thanks to a superimposed fiber grating external cavity. The stability against tuning current variations in the DBR is excellent. Single-mode operation is achieved with SMSR better than 30 dB.
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  • Margulis, Walter, et al. (författare)
  • High-speed fiber switches
  • 2008
  • Ingår i: AIP Conference Proceedings. - : AIP. - 9780735405851 ; , s. 23-25
  • Konferensbidrag (refereegranskat)abstract
    • All-fiber optical switches based on fiber with electrodes exhibit transition times <10ns. The devices are monolithic and robust, they are simple and could potentially be manufactured at low cost. The insertion loss is extremely low and the devices are compatible with single mode fiber technology. Two types of switches are discussed, one based on polarization rotation, the other one relying on the wavelength shift of a fiber Bragg grating (FBG).
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  • Pal, S., et al. (författare)
  • Characteristics of potential fibre Bragg grating sensor-based devices at elevated temperatures
  • 2003
  • Ingår i: Measurement science and technology. - : IOP Publishing. - 0957-0233 .- 1361-6501. ; 14:7, s. 1131-1136
  • Tidskriftsartikel (refereegranskat)abstract
    • Fibre Bragg gratings (FBGs) of type I and IIA were fabricated in Ge-doped and B-Ge co-doped fibres using a 248 nm excimer laser and their performance characteristics were tested and compared with those of a chemical composition grating (CCG), written in a fluorine-germanium doped fibre, over a wide range of temperatures. Long-term testing (more than 600 h) involving a series of step-wise incremental temperature changes shows for the first time the potential of FBGs for high temperature measurement applications (up to and beyond 1100 degreesC), this depending on the type of FBG involved and the material and composition of the substrate fibre (the CCG was observed to be the most durable at very high temperatures). These gratings are likely to be useful for the simultaneous measurement of strain and temperature over these higher temperature ranges.
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  • Resultat 1-10 av 21

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