Title :
Optical low-coherence reflectometry using a Gaussian bandpass filter for measuring WDM components
Author :
Takada, K. ; Okamoto, K.
Author_Institution :
Photonics Labs., Nippon Telegraph & Telephone Corp., Ibaraki, Japan
Abstract :
We report that a tunable narrow-band light source using a Gaussian bandpass filter is indispensable for measuring the return loss of a wavelength-division-multiplexing component with an optical low coherence reflectometer. We used an arrayed-waveguide grating (AWG) to construct a 0.4 nm-wide Gaussian bandpass filter and successfully measured the reflection of a 100-GHz-spaced 1/spl times/6 AWG component.
Keywords :
diffraction gratings; optical communication equipment; optical fibre losses; optical loss measurement; optical planar waveguides; optical tuning; optical waveguides; reflectometry; wavelength division multiplexing; AWG component; Gaussian bandpass filter; WDM components; arrayed-waveguide grating; optical low coherence reflectometer; optical low-coherence reflectometry; return loss; tunable narrow-band light source; wavelength-division-multiplexing component; Arrayed waveguide gratings; Band pass filters; Light sources; Loss measurement; Narrowband; Optical devices; Optical filters; Optical losses; Reflectometry; Wavelength measurement;
Journal_Title :
Photonics Technology Letters, IEEE
