Title :
Analysis of the backreflected signal in an all-fiber bandpass Bragg transmission filter
Author :
Ortega, B. ; Capmany, J. ; Pastor, D. ; Tallone, L. ; Boschis, L.
Author_Institution :
Dept. de Commun., Univ. Politecnica de Valencia, Spain
Abstract :
We present an analysis and explanation of the presence of backreflected signal in an all-fiber bandpass transmission filter. The device is based on a 3-dB fused coupler and two Bragg gratings photoimprinted in the output arms of the coupler. Solutions to correct this problem are proposed.
Keywords :
band-pass filters; diffraction gratings; light reflection; optical communication equipment; optical fibre couplers; optical fibre filters; wavelength division multiplexing; Bragg gratings; all-fiber bandpass Bragg transmission filter; all-fiber bandpass transmission filter; backreflected signal; backreflected signal analysis; fibre coupler output arms; fused coupler; photoimprinted; Arm; Band pass filters; Bragg gratings; Couplings; Fiber gratings; Optical fiber communication; Optical fiber couplers; Optical interferometry; Signal analysis; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
