title: Fabrication of precision fiber-optic time delays with in situ monitoring for subpicosecond accuracy.
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.
authors.forename: K I
authors.initials: KI
authors.lastname: Kang
authors.forename: K L
authors.initials: KL
authors.lastname: Deng
authors.forename: S D
authors.initials: SD
authors.lastname: Koehler
authors.forename: I
authors.initials: I
authors.lastname: Glesk
authors.forename: P R
authors.initials: PR
authors.lastname: Prucnal