Fabrication of precision fiber-optic time delays with in situ monitoring for subpicosecond accuracy

Kang, Koo I. and Deng, Kung L. and Koehler, Steffen D. and Glesk, Ivan and Prucnal, Paul R. (1997) Fabrication of precision fiber-optic time delays with in situ monitoring for subpicosecond accuracy. Applied Optics, 36 (12). pp. 2533-2536. ISSN 0003-6935 (https://doi.org/10.1364/AO.36.002533)

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Abstract

We have developed a technique to produce precise fiber-optic time delays with subpicosecond accuracy and <0.1-dB loss by heating and stretching optical fiber in a fusion splicer. A fiber Mach-Zehnder interferometer allows in situ measurement of these precise delays using a simple alignment process and requiring only a weak optical signal. To demonstrate this capability, we assembled a six-stage feed-forward delay line that can be used to generate 64 optical pulses with 9.5 ± 0.8-ps pulse spacings and 4.8-dB total insertion loss.

ORCID iDs

Kang, Koo I., Deng, Kung L., Koehler, Steffen D., Glesk, Ivan ORCID logoORCID: https://orcid.org/0000-0002-3176-8069 and Prucnal, Paul R.;
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