High bandwidth data recording systems for pulsed power and laser produced plasma experiments

May, M. J.; Clancy, T.; Fittinghoff, D.; Halvorson, C.; Mills, T.; Nikitin, A.; Perry, T.; Roberson, G. P.; Smith, D.; Teruya, A.; Miller, E. K.; Trainham, C.
October 2006
Review of Scientific Instruments;Oct2006, Vol. 77 Issue 10, p10F504
Academic Journal
We present two high bandwidth data transmission and recording systems for the measurement of transient signals during pulsed power and laser produced plasmas. These systems use fiber optic cables to transmit analog data over long distances to high bandwidth digitizing oscilloscopes. One system is based on the direct modulation of a laser diode and has a bandwidth of 1.5 GHz. The other system is based upon a Mach-Zehnder modulator and has a bandwidth of 12 GHz, and is limited by the photoreceiver. The signals are recorded on commercial digitizing oscilloscopes that have approximately six effective bits. The transmission systems use many off-the-shelf components from the telecommunications industry and thus have a high reliability and a moderate cost. Investigation of the reduction in optical transmission of the fibers during exposure to high dose radiation will also be discussed.


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