[1] Mihailovic P, Petricevic S. Fiber optic sensors based on the faraday effect[J]. Sensors, 21, 6564(2021).

[2] Wang R L, Xu S Y, Li W et al. Optical fiber current sensor research: review and outlook[J]. Optical and Quantum Electronics, 48, 1-22(2016).

[3] Wu J H, Zhang X F. Recent progress of all fiber optic current transformers[C], 134-143(2020).

[4] Liu C C, Zhu X H, Su H. Research progress of high sensitivity all fiber optic current sensor[J]. Laser Technology, 46, 175-181(2022).

[5] Blake J, Tantaswadi P, de Carvalho R T. In-line Sagnac interferometer current sensor[J]. IEEE Transactions on Power Delivery, 11, 116-121(1996).

[6] Xiao Z H, Cheng S, Zhang G Q et al. Research on sensitivity characteristic of fiber optic current transformer[J]. Electric Power Automation Equipment, 37, 212-216(2017).

[7] He X M, Wang G C, Gao W et al. The effect analysis of impact on a fiber optic current sensor[J]. Optik, 238, 166724(2021).

[8] Müller G M, Frank A, Yang L et al. Temperature compensation of interferometric and polarimetric fiber-optic current sensors with spun highly birefringent fiber[J]. Journal of Lightwave Technology, 37, 4507-4513(2019).

[9] Lenner M, Frank A, Yang L et al. Long-term reliability of fiber-optic current sensors[J]. IEEE Sensors Journal, 20, 823-832(2020).

[10] Xu S Y, Xing F F, Li W et al. A stray current sensor based on an all-side cylindrical spiral fiber[J]. IEEE Photonics Journal, 9, 6800814(2017).

[11] Xin G F, Zhu J, Luo C M et al. Polarization error analysis of an all-optical fibre small current sensor for partial discharge[J]. Journal of Electrical Engineering & Technology, 15, 2199-2210(2020).

[12] Wu J H, Zhang X F, Chen L et al. Research on measurement technology of ship leakage current by all-fiber optic current sensor[J]. IEEE Access, 9, 160268-160276(2021).

[13] Liu G Q[M]. Magnetooptics(2001).

[14] Cai W, Xing J H, Yang Z Y et al. Mechanism analysis of faraday effect based on magneto-optic coupling[J]. Laser & Optoelectronics Progress, 54, 062601(2017).

[15] Cai W, Xing J H, Yang Z Y. Contributions to Verdet constant of magneto-optical materials[J]. Acta Physica Sinica, 66, 187801(2017).

[16] Liu Y B, Yu C Y, Li H B[M]. Principle, technology and application of electronic transformer, 11-14(2009).

[17] Lizet J, Valette S, Langeac D. Reduction of temperature and vibration sensitivity of a polarimetric current sensor[J]. Electronics Letters, 19, 578-579(1983).

[18] Fang X J, Wang A B, May R G et al. A reciprocal-compensated fiber-optic electric current sensor[J]. Journal of Lightwave Technology, 12, 1882-1890(1994).

[19] Briffod F, Thevenaz L, Nicati P A. Polarimetric Current sensor using an in-line Faraday rotator[J]. IEICE Transactions on Electronics, E83-c, 331-335(2000).

[20] Beltran H C, Flores J L, Ferrari J A et al. Optical current sensor by self-compensating the Faraday effect[J]. Proceedings of SPIE, 8154, 815414(2011).

[21] Zhang H, Jiang J Z, Zhang Y et al. A loop all-fiber current sensor based on single-polarization single-mode couplers[J]. Sensors, 17, 2674(2017).

[22] Huang Y H, Xia L, Pang F B et al. Self-compensative fiber optic current sensor[J]. Journal of Lightwave Technology, 39, 2187-2193(2021).

[23] Müller G M, Yang L, Frank A et al. Simple fiber-optic current sensor with integrated-optics polarization splitter for interrogation[C], AM4A.3(2014).

[24] Nicati P A, Robert P. Stabilised current sensor using Sagnac interferometer[J]. Journal of Physics E: Scientific Instruments, 21, 791-796(1988).

[25] Frosio G, Hug K, Dändliker R. All-fiber sagnac current sensor[J]. Opto, 560-564(1992).

[26] Nicati P A, Robert P. Stabilized Sagnac optical fiber current sensor using one phase and two amplitude modulations[C], 402-405(1992).

[27] Blake J N, Tantaswadi P, Carvalho R T D. All-fiber in-line Sagnac interferometer current sensor[J]. Proceedings of SPIE, 315-319(1995).

[28] Lenner M, Yang L, Frank A et al. Long-term reliability of semiconductor light sources for fiber-optic current sensors[C], SeW3C.6(2014).

[29] Wang X X, Wang X C, Feng X J. Digital closed loop fiber-optic current sensor based on integrated optical phase modulator[J]. Applied Mechanics and Materials, 300/301, 427-431(2013).

[30] Zhang C Y, Wang C H, Chen S. Theory and experimental research of a Y-phase-modulator based optical fiber current sensor[J]. Proceedings of SPIE, 8199, 81990Z(2011).

[31] Drexler P, Fiala P. Utilization of faraday mirror in fiber optic current sensors[J]. Radioengineering, 17, 101-107(2008).

[32] Laming R I, Payne D N. Electric current sensors employing spun highly birefringent optical fibers[J]. Journal of Lightwave Technology, 7, 2084-2094(1989).

[33] Huang D N, Srinivasan S, Bowers J E. Compact Tb doped fiber optic current sensor with high sensitivity[J]. Optics Express, 23, 29993-29999(2015).

[34] Dong X P, Chu B C B, Kong K H et al. Phase drift compensation for electric current sensor employing a twisted fiber or a spun highly birefringent fiber[J]. IEEE Journal of Selected Topics in Quantum Electronics, 6, 803-809(2000).

[35] Gubin V P, Isaev V A, Morshnev S K et al. All-fiber optical sensor of electrical current with a SPUN fiber sensing element[J]. Proceedings of SPIE, 6251, 62510P(2006).

[36] Liu F, Ye Q, Geng J X et al. Study of fiber-optic current sensing based on degree of polarization measurement[J]. Chinese Optics Letters, 5, 267-269(2007).

[37] Zhang H, Qiu Y S, Li H et al. High-current-sensitivity all-fiber current sensor based on fiber loop architecture[J]. Optics Express, 20, 18591-18599(2012).

[38] Liu Y P, Ma L, Du J B et al. Fiber optic current sensor with high sensitivity based on recirculating-loop configuration using standard SMF[C], AF1B.4(2016).

[39] Zhang H Y, Dong Y K, Leeson J et al. High sensitivity optical fiber current sensor based on polarization diversity and a Faraday rotation mirror cavity[J]. Applied Optics, 50, 924-929(2011).

[40] Du J B, Tao Y M, Liu Y P et al. Highly sensitive and reconfigurable fiber optic current sensor by optical recirculating in a fiber loop[J]. Optics Express, 24, 17980-17988(2016).

[41] Rose A H, Deeter M N, Day G W. Submicroampere per root Hz, high bandwidth current sensor based on the faraday effect in Ga∶YIG[C], 394-397(1992).

[42] Chen G Y, Newson T P, Brambilla G. Optical microfibers for fast current sensing[J]. Optical Fiber Technology, 19, 802-807(2013).

[43] Short S X, de Arruda J U, Tselikov A A et al. Elimination of birefringence induced scale factor errors in the in-line Sagnac interferometer current sensor[J]. Journal of Lightwave Technology, 16, 1844-1850(1998).

[44] Gubin V P, Isaev V A, Morshnev S K et al. Use of spun optical fibres in current sensors[J]. Quantum Electronics, 36, 287-291(2006).

[45] Zhou D P, Dong Y, Huang Y. Study of temperature characteristics of the current sensing fiber in fiber optic current sensor applications[J]. Laser & Optoelectronics Progress, 55, 020604(2018).

[49] Hu B, Xiao H, Li J G et al. Noise analysis and SNR optimization design of fiber optical current transformers[J]. High Voltage Engineering, 43, 654-660(2017).

[50] Li H Z, Qian W W, Liu L et al. Analysis and optimization of angle random walk of resonant fiber optic gyroscope[J]. Chinese Journal of Lasers, 48, 0901002(2021).

[51] Liu S, Li H Z, Liu L et al. Laser frequency noise power spectral density measurement technology and its application to resonant optical fiber gyroscope[J]. Acta Optica Sinica, 41, 1306010(2021).

[52] Hao Y W, Kong X X, Cai Q S et al. Analysis of effect of circulator noise on laser interferometry system[J]. Acta Optica Sinica, 41, 0912003(2021).

[53] Xiao Z H, Luo S N, S X K et al[M]. Principle and practical technology of electronic transformer, 104-111(2018).

[54] Wang X X, Zhang Y N, Yu J et al. Influence of conductor eccentricity on Faraday phase shift errors of portable fiber-optic current transformer[J]. Optik, 127, 8505-8512(2016).

[55] Li R C, Zhao J, Li D C. Impact of polarizer on reflecting fiber-optic current transducer[J]. Journal of Applied Optics, 33, 216-219(2012).

[56] Yu J, Zhang C X, Li C S et al. Influence of polarization-dependent crosstalk on scale factor in the in-line Sagnac interferometer current sensor[J]. Optical Engineering, 52, 117101(2013).

[57] Wang X X, Qin Y, Wang Y et al. Errors of fiber delay line polarization crosstalk for all fiber optical current sensor[J]. Optics and Precision Engineering, 22, 2930-2936(2014).

[58] Short S X, Tselikov A A, de Arruda J U et al. Imperfect quarter-waveplate compensation in Sagnac interferometer-type current sensors[J]. Journal of Lightwave Technology, 16, 1212-1219(1998).

[59] Pang F B, Liu Y, Yuan Y B et al. Influencing factors analysis on the detector output signal of fiber optic current transformer with sine modulation[J]. Measurement, 151, 107151(2020).

[60] Pang F B, Huang Q, Liu Y et al. Fault mechanism of fiber optical current transformer based on signal processing method[J]. Mathematical Problems in Engineering, 2020, 1282014(2020).

[61] Zhang C Y, Zhang C X, Wang X X et al. Signal processing system for digital closed-loop fiber optic current sensor[J]. Proceedings of the CSEE, 29, 42-46(2009).

[62] Li J Z, Li Z R, Zhang D H et al. Open-loop detection of fiber optic current transducer[J]. Infrared and Laser Engineering, 43, 1648-1653(2014).

[63] Zhao J, Shi L, Sun X H. Design and performance study of a temperature compensated ±1100 kV UHVDC all fiber current transformer[J]. IEEE Transactions on Instrumentation and Measurement, 70, 20165133(2021).

[64] Wang M H, Cui Y P, Zhang T. Analysis on the mechanism of dead band phenomena in digital closed-loop fiber optic current transformers[J]. Chinese Journal of Sensors and Actuators, 22, 24-28(2009).

[65] Wang T Y, Luo C M, Duan L et al. Wavelet signal processing system in fiber optic current sensors[J]. Journal of Tsinghua University (Science and Technology), 39, 51-53(1999).

[66] Li Y S, Zhang G Q, Yu W B et al. Adaptive optical current transducer[J]. Proceedings of the CSEE, 23, 100-105(2003).

[67] Li Y S, Liu J. Signal processing method for adaptive optical current transducer[J]. Automation of Electric Power Systems, 32, 53-56(2008).

[68] Li Y S, Yu W B, Zhang G Q et al. Square root Kalman adaptive filter and its applications on OCT[J]. Automation of Electric Power Systems, 29, 53-56, 73(2005).

[69] Wang Y Y, Li Y S. The research on the Sigma point Kalman filter algorithm in filtering noise in the optical current transducer(OCT)[J]. Science Technology and Engineering, 13, 9348-9351(2013).

[70] Li Y S, Ouyang J, Liu J et al. Analysis on noise of magneto-optical glass type optical current transformer based on Allan variance[J]. Automation of Electric Power Systems, 39, 126-129, 137(2015).

[71] Li Y S, Li X, Ouyang J et al. Research of signal processing of OCT based on sequential Kalman filter[J]. Electrical Measurement & Instrumentation, 53, 16-21(2016).

[72] Xiang Y, Li Y S. Research of signal processing of optical current transducer based on particle filter[J]. Power System Protection and Control, 41, 101-104(2013).

[73] Zimmermann A C, Besen M, Encinas L S et al. Improving optical fiber current sensor accuracy using artificial neural networks to compensate temperature and minor non-ideal effects[J]. Proceedings of SPIE, 7753, 77535Q(2011).