Title :
Gain Saturation and Output Characteristics of Index-Antiguided Planar Waveguide Amplifiers With Homogeneous Broadening
Author :
Wang, Chaofan ; Her, Tsing-Hua ; Zhao, Lei ; Ao, Xianyu ; Casperson, Lee W. ; Lai, Chih-Hsien ; Chang, Hung-chun
Author_Institution :
Dept. of Phys. & Opt. Sci., Univ. of North Carolina at Charlotte (UNCC), Charlotte, NC, USA
fDate :
7/1/2011 12:00:00 AM
Abstract :
We investigate numerically and analytically the propagation characteristics of gain-guided modes in index-antiguided planar waveguides. We show that the gain-guided mode has modal confinement proportional to the modal gain, and single-transverse mode propagation is very robust in such waveguides. The power evolution of the fundamental mode can be described analytically with very good accuracy. Limiting power and optimum length of the waveguide amplifiers can also be obtained analytically.
Keywords :
amplifiers; light propagation; optical planar waveguides; spectral line broadening; fundamental mode; gain saturation; gain-guided modes; homogeneous broadening; index-antiguided planar waveguide amplifiers; limiting power; modal confinement; modal gain; single-transverse mode propagation; Equations; Indexes; Limiting; Optical amplifiers; Optical saturation; Optical waveguides; Planar waveguides; Optical amplifiers; optical propagation; optical saturation; optical waveguides; solid lasers;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2011.2153822
