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

Volume

14

Issue

7

fYear

2002

fDate

7/1/2002 12:00:00 AM

Firstpage

968

Lastpage

970

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;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2002.1012401

Filename

1012401