banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Femtosecond real-time single-shot digitizer
Rent this article for
View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) Conceptual diagram of the optical preprocessor. An ultrafast electrical signal is modulated onto the envelope of a chirped optical pulse which is further chirped and photodetected. As a result, the output electrical signal is time stretched, and therefore compressed in bandwidth, to within the Nyquist limit of a real-time oscilloscope.

Image of FIG. 2.
FIG. 2.

(Color online) Experimental setup of the optical preprocessor with a 250 times bandwidth compression factor. A distributed Raman amplification scheme is employed to overcome of insertion loss in the dispersive element. Below, a conceptual diagram shows the advantage of distributed amplification (sinusoidal curve) over discrete amplification (sawtooth curve), e.g., a chain of EDFAs, in avoiding undesirable regions of high noise and optical nonlinearities. The dashed lines show the propagation of the bidirectional Raman pump lasers. DCF: dispersion compensating fiber; EDFA: erbium-doped fiber amplifier; MZM: Mach-Zehnder modulator; FM: Faraday mirror.

Image of FIG. 3.
FIG. 3.

A klystron tone is digitized in real time at .

Image of FIG. 4.
FIG. 4.

A single-shot electrical impulse digitized at sampling intervals. The real-time single-shot waveform (shown in black) is filtered over and compared to a repetitive version recorded by a sampling oscilloscope (shown in gray).


Article metrics loading...


Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Femtosecond real-time single-shot digitizer