Specifications

Language: English
ISSN: 0277786X
CODEN: PSISDG
ISBN-13: 9780819495501
Document type: Conference article (CA)
Conference name: 8th International Symposium on Precision Engineering Measurements and
Instrumentation
Conference date: August 8, 2012 - August 11, 2012
Conference location: Chengdu, China
Conference code: 96463
Sponsor: International Committee on Measurements and Instrumentation; National Natural
Science Foundation of China; Chinese Society for Measurement; China Instrument and Control
Society
Publisher: SPIE, P.O. Box 10, Bellingham, WA 98227-0010, United States
Abstract: The fringe-imaging Fabry-Perot (FIFP) interferometer and fringe-imaging
Mach-Zehnder (FIMZ) interferometer as frequency discriminator for incoherent molecular
Doppler wind lidar are proposed, analyzed and compared theoretically respectively. Using ZEMAX
software, the FIFP interferometer and FIMZ interferometer are designed and simulated
respectively. Compared with Fabry-Perot interferometer (FPI), Mach-Zehnder interferometer
(MZI) produces equidistant linear parallel fringes instead of circular rings. The record of the MZI
fringe pattern is noticeably easier than that of the FPI and can be performed with a cylindrical
lens and focused on a linear CCD array rather than a complex circle to line interferometer optical
(CLIO) system. According to the U.S. standard atmospheric model, the transmission,
signal-to-noise ratio (SNR), sensitivity and wind error for FIFP and FIMZ systems are simulated
respectively. The results show that, the MZI sensitivity is lower than that of FPI, however, the MZI
offers 4 times higher transmission, resulting to about 1.4 times smaller wind error in the
line-of-sight (LOS) velocity component than that of FIFP. In addition, the MZI can be designed
with a compensated field to accept sources of appreciable dimensions without significant
performance reduction, which will provide an effective technique for Doppler wind lidar to
improve the accuracy of wind velocity measurement by using MZI as frequency discriminator. ©
2013 SPIE.
Number of references: 10
Main heading: Fabry-Perot interferometers
Controlled terms: Acoustic wave velocity measurement - Charge coupled devices -
Computer simulation - Imaging techniques - Lenses - Measurements - Optical
radar - Precision engineering
Uncontrolled terms: Doppler lidars - Fabry-Perot - Frequency discriminators -
Mach-Zehnder - Wind velocity measurement
Classification code: 944 Moisture, Pressure and Temperature, and Radiation Measuring
Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric
and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments -
746 Imaging Techniques - 741.3 Optical Devices and Systems - 741 Light, Optics and
Optical Devices - 723.5 Computer Applications - 714.2 Semiconductor Devices and
Integrated Circuits