TITLE:
The λ-Characteristics of the Ring Laser Based on Non-Uniform SOA
AUTHORS:
Zhi Wang, Limei Zhang, Yingfeng Liu, Lanlan Liu
KEYWORDS:
Semiconductor Optical Amplifier; Non-Uniform; Ring Laser; Gain
JOURNAL NAME:
Journal of Computer and Communications,
Vol.1 No.7,
December
2,
2013
ABSTRACT: Semiconductor
optical amplifier-based ring cavity laser (SOA-RL), which has been widely used
in optical communications, optical fiber sensing,
and biophotonics fields, can be tuned at an ultra high speed up to Mega Hertz
over 100 nm bandwidth range with high SNR and flatness output. A
steady-state model and segmentation algorithms are employed to investigate the
gain spectra of four kinds of non-uniform SOA and the lasing wavelength of the
SOA-RL. It shows that the dependence of the lasing wavelength on the average
width is stronger when the light propagates from narrower to wider end than
conversely, and there are some particular structures to show ultra high
stability lasing wavelength. It is supposed that the main reason could be the
carrier density distribution along the propagation.