Time-division multiplexing with sampled modulation of laser diode

Autor: David A. Jackson, T.P. Newson, Faramarz Farahi, Jose Luis Santos
Rok vydání: 1990
Předmět:
Zdroj: Fiber Optic Sensors IV.
ISSN: 0277-786X
DOI: 10.1117/12.20307
Popis: A time division multiplexing technique is described in which the frequency of a laser source is modulated with a sampled ramp. The concept is demonstrated with two Mach-Zehnder interferometers in a parallel configuration, separated by a fibre delay line whose length is determined by the characteristics of the sampling waveform. Pseudo-heterodyne processing was used to recover the phase information from each interferometer. The expansion of the technique to a combined frequency and time division multiplexed fibre-optic sensing system is considered.
Databáze: OpenAIRE