Title :
Measurements of coupling and reflection characteristics of butt-joints in passive waveguide integrated laser diodes
Author :
Song, Jung-Ho ; Park, Jung-Woo ; Sim, Eun-Deok ; Baek, Yongsoon
Author_Institution :
Opt. Devices Dept., Electron. & Telecommun. Res. Inst., Daejon, South Korea
Abstract :
Amplified spontaneous emission (ASE) spectra of passive waveguide integrated lasers have been studied to estimate the coupling efficiency and the reflectivity at the butt-joints between active and passive waveguides. A new method has been proposed for the analysis of ASE to extract the coupling efficiency and reflectivity at the butt-joints. This method was applied experimentally to estimate the coupling and reflection of the passive waveguide integrated lasers with different amounts of vertical misalignments of active and passive waveguides.
Keywords :
butt welding; integrated optics; optical couplers; reflectivity; semiconductor device measurement; semiconductor lasers; superradiance; waveguide lasers; amplified spontaneous emission; butt-joints; coupling efficiency; laser diodes; passive waveguide; reflectivity; vertical misalignments; Coupling circuits; Diode lasers; Optical coupling; Optical reflection; Optical waveguides; Reflectivity; Semiconductor lasers; Semiconductor waveguides; Waveguide lasers; Wavelength measurement; Optical coupling; photonic integrated circuit; reflection; semiconductor waveguides;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.852329
