Title :
Determination of Internal Loss and Quasi-Fermi Level Separation From the Amplified Spontaneous Emission Spectrum of Fabry–PÉrot Semiconductor Lasers
Author :
Guo, W.H. ; Byrne, D. ; Lu, Q.Y. ; Phelan, R. ; Donegan, J.F. ; Corbett, B.
Author_Institution :
Semicond. Photonics Group, Sch. of Phys. & Centre for Telecommun., Dublin
Abstract :
The net modal gain and the un-amplified spontaneous emission (ASE) coupled into the laser waveguide mode are extracted from the ASE spectrum of Fabry-Perot semiconductor lasers by the Fourier transform method with a deconvolution process. Highly accurate quasi-Fermi level separation and internal loss are then derived by a minimum search process from the relationship between the spontaneous emission and gain
Keywords :
Fermi level; Fourier transforms; deconvolution; laser modes; optical losses; semiconductor lasers; spontaneous emission; superradiance; ASE spectrum; Fabry-Perot semiconductor lasers; Fourier transform method; amplified spontaneous emission; deconvolution; internal loss; laser waveguide mode; net modal gain; quasiFermi level separation; Bandwidth; Deconvolution; Fourier transforms; Laser modes; Optical coupling; Optical modulation; Semiconductor lasers; Spontaneous emission; Stimulated emission; Waveguide lasers; Amplified spontaneous emission (ASE); Fabry–PÉrot (FP) semiconductor laser; Fourier transform (FT) method; internal loss; quasi-Fermi level separation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.881654
