Compact Photoconductive-based Sampling System with Electronic Sampling Delay

Published

May 1, 2000

Author(s)

W. L. Cao, M. Du, C G. Lee, Nicholas Paulter

Abstract

As electronic signals move to higher frequencies and wider bandwidths, there is need for new methods of measuring these bandwidths, there is need for new methods of measuring these high frequency/high speed (tens of Hgz and or high bit rate (tens of GBs and/or high bit rate(tens of GBs/s signals. In this work, critical technical issues associated with the design of a rugged, compact, real-time sampling system using photo conductive switches as the test signal generator and sampler were investigated. The design concept is based upon an optoelectronic equivalent time sampling principle and optical microwave signal mixing. It involves first phase locking of the periodic input signal to be measured to the periodic optical pulses from a mode-locked laser and subsequent sampling of the locked signal by the optical pulses. A photoconductive switch is used for the optical microwave mixer and another photoconductor for the sampler.

Proceedings Title

Tech. Dig., Conf. on Lasers and Electro-Optics (CLEO)

Conference Dates

May 7-12, 2000

Conference Location

San Francisco, CA

Pub Type

Conferences

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Keywords

electronic delay, optical-microwave mixing , optical-microwave phase-locked loop, photoconductive sampling

Citation

Cao, W. , Du, M. , Lee, C. and Paulter, N. (2000), Compact Photoconductive-based Sampling System with Electronic Sampling Delay, Tech. Dig., Conf. on Lasers and Electro-Optics (CLEO), San Francisco, CA, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=23943 (Accessed October 20, 2025)