DocumentCode
2917674
Title
A proximity sensor using power variation of a laser diode caused by returned light and its characteristics of stability
Author
Inari, Takahiko ; Aoki, Nobuya
Author_Institution
Kinki Univ., Wakayama, Japan
fYear
2005
fDate
6-10 Nov. 2005
Abstract
The proximity sensor using power variance of a laser diode caused by returned light from the target is examined. The output is taken by a photo-diode included in the laser diode for monitoring the power. The output of the sensor is attenuated exponentially with distance from the target. This attenuation characteristic is assumed in this paper to be caused by attenuation of the light during propagation between the target and the sensor. The details of the influences on the accuracy by drift of the sensor are examined, and then, a control or compensation method is proposed in the paper.
Keywords
compensation; electric sensing devices; photodiodes; semiconductor lasers; attenuation characteristics; laser diode; photo-diode; power monitoring; power variation; proximity sensor; stability; Diode lasers; Equations; Laser stability; Monitoring; Optical attenuators; Optical sensors; Power generation; Power lasers; Sensor phenomena and characterization; Temperature sensors;
fLanguage
English
Publisher
ieee
Conference_Titel
Industrial Electronics Society, 2005. IECON 2005. 31st Annual Conference of IEEE
Print_ISBN
0-7803-9252-3
Type
conf
DOI
10.1109/IECON.2005.1569230
Filename
1569230
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