Open AccessSingle step measurement of optical transmitters Henry factor using sinusoidal optical phase modulations
Author(s) -
J.-G. Provost,
A. Martinez,
Alexandre Shen,
A. Ramdane
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.021396
Subject(s) - optics , laser linewidth , bandwidth (computing) , phase modulation , optical transfer function , materials science , fabry–pérot interferometer , optical filter , optical fiber , laser , phase noise , physics , telecommunications , computer science
Measurement of the Henry factor over large optical bandwidth is carried out in a single step without any filtering, using a technique based on the sinusoidal phase modulation method. This fast technique was successfully applied to a directly modulated Fabry Perot laser to obtain simultaneously the linewidth enhancement factor (LEF) of 14 longitudinal modes. It is also well suited for electro-absorption modulators (EAM) for which the α-factor is determined over 15 nm optical bandwidth. A very good agreement is found with the well established fiber transfer function method.