Title :
Evaluation of the rejection ratio of an MMI-based higher order mode filter using optical low-coherence reflectometry
Author :
Kohtoku, Masaki ; Shibata, Yasuo ; Yoshikuni, Yuzo
Author_Institution :
Photonics Labs., NTT Corp., Kanagawa, Japan
fDate :
7/1/2002 12:00:00 AM
Abstract :
The multimode interference (MMI)-based higher order mode filter is effective in improving the characteristics of devices that employ highly confined waveguides. However, the characteristics of fabricated devices are not well known due to the difficulties of higher order mode loss measurement. We determined the characteristics of simple MMI-based higher order mode filters experimentally by using optical low coherence reflectometry.
Keywords :
light interference; optical communication equipment; optical fibre losses; optical waveguide filters; reflectivity; reflectometry; MMI-based higher order mode filter; fabricated devices; higher order mode loss measurement; highly confined waveguides; multimode interference; optical low coherence reflectometry; rejection ratio; Arrayed waveguide gratings; Loss measurement; Optical devices; Optical filters; Optical losses; Optical refraction; Optical variables control; Optical waveguides; Reflectivity; Semiconductor waveguides;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.1012401
