Title :
Fabrication of wavelength-tunable InGaAsP/InP grating-assisted codirectional coupler filter with very narrow bandwidth
Author :
Park, C.Y. ; Kim, D.B. ; Yoon, T.H. ; Kim, Jong Soo ; Oh, K.R. ; Lee, S.W. ; Lee, S.M. ; Ahn, J.H. ; Kim, Ho Min ; Pyun, K.E.
Author_Institution :
Sect. of Optoelectronics, Electron. & Telecommun. Res. Inst., Taejeon
fDate :
4/24/1997 12:00:00 AM
Abstract :
A wavelength-tunable grating-assisted codirectional coupler optical filter with a full coupling length of 4.5 mm has been designed and fabricated by reactive ion etching and metal organic chemical vapour deposition techniques. The centre wavelength and bandwidth for TE-polarisation were 1530.6 and 1.5 nm, respectively, and those for TM-polarisation were 1494.0 and 1.3 nm. respectively, which is one of the narrowest reported. When a current of 100 mA was injected into a lower index waveguide, the central wavelength shifted by 7.8 nm towards the longer wavelength side
Keywords :
III-V semiconductors; diffraction gratings; gallium arsenide; gallium compounds; indium compounds; integrated optics; optical directional couplers; optical fabrication; optical waveguide filters; sputter etching; tuning; vapour phase epitaxial growth; 100 mA; 1494 nm; 1530.6 nm; InGaAsP-InP; MOCVD technique; TE-polarisation; TM-polarisation; chemical vapour deposition; codirectional coupler filter; fabrication; grating-assisted coupler filter; metal organic CVD; narrow bandwidth; optical filter; reactive ion etching; wavelength-tunable filter;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19970534
