Open AccessOptical feedback effect in DFB lasers for remote reflectivity detecting
Author(s) -
Junping Zhou,
Ming Wang,
Daofu Han
Publication year - 2007
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.15.012183
Subject(s) - optics , reflectivity , laser , modulation (music) , distributed feedback laser , materials science , signal (programming language) , optoelectronics , semiconductor laser theory , computer science , physics , acoustics , programming language
A new approach for remote reflectivity detecting based on optical feedback effect in distributed feedback (DFB) lasers is presented. A linear dependent relationship between the reflectivity of external target and the signal modulation depth is obtained. The experimental results show a good agreement with the theoretical analysis and the simulation, and indicate that the active sensing based on optical feedback effect in DFB laser is an effective approach for reflectivity detecting. With the advantage of simple and compact structure, this application can easily enhance the development of a new generation of active sensor.