Disturbance-Free Distributed Bragg Reflector Laser-Diode Interferometer with a Double Sinusoidal Phase-Modulating Technique for Measurement of Absolute Distance
Applied Optics, Vol. 43, Issue 23, pp. 4482-4487 (2004)
http://dx.doi.org/10.1364/AO.43.004482
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Abstract
A new range-finding technique that uses both double sinusoidal phase modulation and quasi-two-wavelength interferometry is described. Two independent interference signals are generated with respect to two different wavelengths on a time-sharing basis. We clarify that external disturbances of these interference signals are eliminated by both feedback control and differential detection and that the feedback control does not affect the distance measurement. A single distributed Bragg reflector laser diode allows us to simplify the optical setup and to improve the measurement accuracy. After discussing a measurement range, we estimate a measurement error by making several measurements.
© 2004 Optical Society of America
OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(140.2020) Lasers and laser optics : Diode lasers
(150.5670) Machine vision : Range finding
Citation
Takamasa Suzuki, Takao Ohizumi, Tatsuhiko Sekimoto, and Osami Sasaki, "Disturbance-Free Distributed Bragg Reflector Laser-Diode Interferometer with a Double Sinusoidal Phase-Modulating Technique for Measurement of Absolute Distance," Appl. Opt. 43, 4482-4487 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-23-4482
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