Optical Polarization Errors in Sagnac Fiber Optic Current Sensor
Li hui Wang, Jian Sun, Jian fei Ji, Sheng bao Xu
Li hui Wang
Available Online August 2013.
- https://doi.org/10.2991/icacsei.2013.50How to use a DOI?
- Fiber optic current sensor, Fiber optic gyroscope, Optical polarization state, Phase retardation, Modeling.
- Sagnac fiber optic current sensor(S-FOCS) is a kind of precision instrument based on optical polarization and optical interference theory. There are several kinds of error characteristics from optical components in S-FOCS, including polarizer, integrated optical chip, quarter-wave retarder, sensing head and so on. With these errors, linearly polarized light wave in PM fiber and circularly polarized light wave in sensing fiber become elliptically polarized light wave, then, nonreciprocal phase shift induced by magnetic field of the current is interrupted by wrong polarization state. Focused on optical polarization error in S-FOCS, we analyze the characteristics of polarization errors associated with optical components in S-FOCS theoretically, and we demonstrate the methods to build optical polarization error models by using Poincare sphere and Jones matrix respectively. Then, based on model of polarization state in S-FOCS, we carry out simulation of polarization error characteristics in S-FOCS, and theoretically investigate the influence of several main error factors on optical polarization characteristics, including polarizer, phase delay in quarter-wave retarder, splice angular between quarter-wave retarder and PM fiber.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Li hui Wang AU - Jian Sun AU - Jian fei Ji AU - Sheng bao Xu PY - 2013/08 DA - 2013/08 TI - Optical Polarization Errors in Sagnac Fiber Optic Current Sensor BT - 2013 International Conference on Advanced Computer Science and Electronics Information (ICACSEI 2013) PB - Atlantis Press SP - 202 EP - 205 SN - 1951-6851 UR - https://doi.org/10.2991/icacsei.2013.50 DO - https://doi.org/10.2991/icacsei.2013.50 ID - Wang2013/08 ER -