期刊
OPTICS EXPRESS
卷 21, 期 2, 页码 2521-2530出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.21.002521
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资金
- National Basic Research Program of China (973 Program) [2010CB327806]
- International Science & Technology Cooperation Program of China [2009DFB10080, 2010DFB13180]
- China Postdoctoral Science Foundation [20100470782]
We introduce a parameter called pointing error thermal sensitivity (PETS) for quantitatively determining the quality of a quadrupolar (QAD) fiber coil under radial temperature variations. We show both analytically and experimentally that the pointing error of a fiber gyro incorporating the fiber coil is linearly proportional to the final radial thermal gradient on the coil, with PETS as the proportional constant. We further show that PETS is linearly proportional to another parameter called effective asymmetric length of the coil. By thermally inducing different radial thermal gradients on the fiber coil and measuring the corresponding pointing errors in a gyroscopic measurement setup, we can confidently determine the PETS of the fiber coil and its associated effective asymmetric length caused by imperfections in coil winding. Consequently, we are able to precisely trim the coil to achieve best thermal performance. (C) 2013 Optical Society of America
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