Title :
Wavelength-insensitive couplers in form of all-fibre Mach-Zehnder interferometer
Author :
Morishita, Kohei ; Tahara, Tatsuki
Author_Institution :
Dept. of Precision Eng., Osaka Electro-Commun. Univ., Japan
fDate :
6/20/1991 12:00:00 AM
Abstract :
Wavelength-insensitive couplers are made by an all-fibre Mach-Zehnder interferometer forming two couplers in series. The splitting ratio of about 0 dB of a fabricated coupler is constant to within +or-1 dB over the large wavelength region of 1.31-1.53 mu m. The fluctuations of a produced coupler with about a 10 dB splitting ratio are within +or-1 dB in the 1.22-1.34 mu m region.
Keywords :
light interferometers; optical couplers; optical fibres; 1.22 to 1.34 micron; Mach-Zehnder interferometer; all-fibre type; wavelength insensitive couplers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19910747
