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Picosecond optical sampling

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4 Author(s)
Haus, H. ; Massaschusetts Institute of Technology, Cambridge, MA, USA ; Kirsch, S. ; Mathyssek, K. ; Leonberger, F.J.

A high speed sampling technique is proposed using a cascade of optical waveguide interferometers driven by CW sinusoidal traveling or standing microwaves. Each interferometer multiplies the optical signal by a function closely approximated by \cos^{4} \omega t , where ω is the frequency of its microwave drive. A cascade of four interferometers with 2.6 V microwave drives at 10, 20, 40, and 80 GHz and a total length of 2 cm can sample an optical signal with 2 ps resolution and 50 ps between samples. The sampler might be used in a picosecond sampling oscilloscope or in experiments requiring a jitter-free train of identical pulses.

Published in:

Quantum Electronics, IEEE Journal of  (Volume:16 ,  Issue: 8 )