DocumentCode
1437643
Title
Noncontact vibration sensors based on current modulated external cavity semiconductor lasers
Author
Morgan, C. ; Bordovsky, M. ; White, I. ; Griffiths, R.
Author_Institution
Centre for Commun. Res., Bristol Univ., UK
Volume
147
Issue
6
fYear
2000
fDate
12/1/2000 12:00:00 AM
Firstpage
413
Lastpage
416
Abstract
An improvement in performance and design of noncontact vibration sensors based on external cavity semiconductor lasers is demonstrated. A technique for narrowing RF spectral peaks in external cavity lasers with moderate optical feedback by direct current modulation is explained. Current modulation frequencies suitable for use with developed position and vibration sensors are identified. Improvements in accuracy and resolution for the sensors are recorded and illustrated
Keywords
electro-optical modulation; laser cavity resonators; laser feedback; measurement by laser beam; optical sensors; semiconductor lasers; vibration measurement; RF spectral peak narrowing; accuracy; current modulated external cavity semiconductor lasers; current modulation frequencies; direct current modulation; moderate optical feedback; noncontact vibration sensors; resolution;
fLanguage
English
Journal_Title
Optoelectronics, IEE Proceedings -
Publisher
iet
ISSN
1350-2433
Type
jour
DOI
10.1049/ip-opt:20000868
Filename
902329
Link To Document