Title :
Time delay measurement of chirped fibre grating using bidirectional modulation of Mach-Zehnder modulator
Author :
Jeon, Keum-Soo ; Kim, Hee-Ju ; Pan, Jae-Kyung
Author_Institution :
Div. of Electron. & Inf. Eng., Chonbuk Nat. Univ., Chonju, South Korea
fDate :
11/7/2002 12:00:00 AM
Abstract :
A simple method for time delay measurement of a chirped fibre grating by using bidirectional modulation of a Mach-Zehnder modulator is proposed. The bidirectionally modulated light with time difference produces an interference fringe in the RF domain. The time delay of a chirped fibre grating can be obtained by measuring the period of the RF interference fringe from different wavelengths.
Keywords :
Mach-Zehnder interferometers; chirp modulation; delay estimation; diffraction gratings; optical fibres; optical modulation; reflectivity; 10 GHz; 1500 to 1580 nm; Mach-Zehnder modulator; RF interference fringe; bidirectional modulation; bidirectionally modulated light; chirped fibre grating; reflectivity; time delay measurement; time difference; tunable laser source;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20021012
