Acta Optica Sinica, Volume. 39, Issue 4, 0406004(2019)
Design of Fiber-Optic Current Transformer Based on Passive Phase Modulator
Figures & Tables(8)
Fig. 4. Effect of phase offset on output waveform. (a) Without phase offset; (b) with phase offset in counterclockwise direction; (c) with phase offset in clockwise direction
Fig. 6. Analysis chart of system variation error. (a) Compound zero-order wave plate & Faraday rotators with different temperature characteristics; (b) true zero-order wave plate & Faraday rotators with different temperature characteristics; (c) multiple-order wave plate & Faraday rotators with different temperature characteristics
Fig. 7. Effect of temperature on system output response and phase offset. (a) Variations of output phase of phase modulator and detection light intensity; (b) variations of system change ratio error and phase output error
Table 1. Angle parameters (compound zero-order wave plate)
View tableTable 1. Angle parameters (compound zero-order wave plate)
Temperature varying coefficient of Faraday rotator /[(°)∙℃-1] Compensation angle range (0.5 S) /(°) Compensation angle range (0.2 S) /(°) Corresponding wave plate initial phase delay range (optimal solution) /(°) Minimum ratio error /% 0.02 (-0.36,23.76) (7.74,17.1) (90.83,94.16) (-0.02,0.02) 0.04 (0.45,11.52) (4.50,8.28) (90.28,90.94) (-0.07,0.07) 0.06 (0.99,7.47) (3.60,4.86) (90.18,90.32) (-0.14,0.14) 0.09 (1.62,3.96) can not meet (90.04,90.22) (-0.31,0.31)
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Yuefeng Qi, Qi Feng, Jin Zhang, Xin Zhang, Mingjun Wang, Dongsheng Tian, Wei Li. Design of Fiber-Optic Current Transformer Based on Passive Phase Modulator[J]. Acta Optica Sinica, 2019, 39(4): 0406004
Paper Information
Category: Fiber Optics and Optical Communications
Received: Oct. 17, 2018
Accepted: Dec. 29, 2018
Published Online: May. 10, 2019
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