caa a22 4500 606243860 CHVBK 20210128101327.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s12596-014-0205-x doi (NATIONALLICENCE)springer-10.1007/s12596-014-0205-x An investigation of polarization nonreciprocity's effect on the performance of scale factor in closed-loop fiber optical gyroscope [Elektronische Daten] [Xiaobin Xu, Xiong Pan, Jing Jin, Ningfang Song, Zuchen Zhang] The performance of scale factor is generally thought to be just dependent on the stability of wavelength, the area of fiber coil, and half-wave voltage of modulator, but its dependence on polarization nonreciprocity (PNR) in a closed-loop fiber optical gyroscope (FOG) is investigated here theoretically and experimentally. A model is established to obtain the primary waves and the main secondary waves existing in the FOG, based on which their interference intensities are obtained and utilized for closing loop. The simulation result reveals that a bias error caused by PNR depends on input angle velocity, so scale factor error arises as a result. The phase difference between the primary and secondary waves, which is induced by different optical paths they have experienced in birefringent segments, affects PNR's contribution to scale factor error and may make PNR cause large nonlinearity of scale factor, even "dead zone” under small input angle velocity. The experiment verifies the analyzing and simulation results. The Optical Society of India, 2014 Polarization nationallicence Fiber optical gyroscope nationallicence Scale factor nationallicence Birefringence nationallicence Xu Xiaobin School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing, China aut Pan Xiong School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing, China aut Jin Jing School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing, China aut Song Ningfang School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing, China aut Zhang Zuchen School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing, China aut Journal of Optics Springer India 44/1(2015-03-01), 30-35 0972-8821 44:1<30 2015 44 12596 https://doi.org/10.1007/s12596-014-0205-x text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s12596-014-0205-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Xu Xiaobin School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing, China aut NATIONALLICENCE 700 1- Pan Xiong School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing, China aut NATIONALLICENCE 700 1- Jin Jing School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing, China aut NATIONALLICENCE 700 1- Song Ningfang School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing, China aut NATIONALLICENCE 700 1- Zhang Zuchen School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing, China aut NATIONALLICENCE 773 0- Journal of Optics Springer India 44/1(2015-03-01), 30-35 0972-8821 44:1<30 2015 44 12596