Title :
Wavelength trimming technology for multiple-wavelength distributed-feedback laser arrays by photo-induced refractive index change
Author :
Sudoh, T.K. ; Nakano, Y. ; Tada, K.
Author_Institution :
Dept. of Electron. Eng., Tokyo Univ., Japan
fDate :
1/30/1997 12:00:00 AM
Abstract :
The authors propose a novel post-fabrication wavelength-error correction method in distributed-feedback (DFB) laser arrays without using external active control circuitry. Namely `wavelength trimming technology´. Se-based chalcogenide glass has been used which has a refractive index change of ~1% induced by light irradiation as a part of a waveguide of a 1.55 μm DFB laser and wavelength trimming of 0.14 nm is demonstrated
Keywords :
chalcogenide glasses; distributed feedback lasers; integrated optics; optical fabrication; photorefractive effect; refractive index; semiconductor laser arrays; waveguide lasers; wavelength division multiplexing; 1.55 micron; Se-based chalcogenide glass; WDM; distributed-feedback laser arrays; light irradiation; multiple-wavelength DFB laser arrays; photo-induced refractive index change; post-fabrication method; waveguide lasers; wavelength trimming technology; wavelength-error correction method;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19970134
