Title :
Proposed semiconductor narrow-band wavelength filter using directional coupler
Author :
Wakatsuki, A. ; Okamoto, K. ; Mikami, Osamu
Author_Institution :
NTT Opto-electron. Labs., Morinosato, Japan
Abstract :
A GaInAsP/InP waveguide narrow-band wavelength filter is proposed and analysed. The proposed wavelength filter is based on an asymmetric semiconductor directional coupler having a step-index waveguide and a double clad waveguide. It is numerically shown that a bandwidth as narrow as 5.4 nm is feasible for 1.3 mm long devices at a 1.53 mu m centre wavelength.
Keywords :
III-V semiconductors; band-pass filters; directional couplers; gallium arsenide; indium compounds; integrated optics; optical couplers; optical filters; optical waveguide components; 1.3 mm; 1.53 micron; GaInAsP-InP waveguide filter; asymmetric semiconductor directional coupler; bandwidth; directional coupler; double clad waveguide; optical waveguides; semiconductor narrow-band wavelength filter; semiconductors; step-index waveguide;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19901010
