Novel approach to indirect measurements of alternating current based on the interrogation of an all-fiber laser

作者：Camas Anzueto J L^*; Roblero Galdamez J B; Vazquez Sanchez R; Garcia Lara C; Anzueto Sanchez G; Perez Patricio M; Mendoza Vazquez S; Medina Santiago A

来源：Measurement, 2013, 46(10): 4108-4113.

DOI：10.1016/j.measurement.2013.08.001

• Fiber sensor
• Fiber laser
• Fiber Bragg gratings
• Heat transfer

This paper proposes and demonstrates a novel alternative to measure alternating current (AC) in an indirect manner, based on the interrogation of an Erbium-doped all-fiber laser. The principle of operation is based on sensing the temperature of an electrical wire AWG-22 caused by Joule effect. The heat transfer between a sensing Fiber Bragg Grating and the electrical wire modulates the intensity of the optical output power of the fiber laser. The intensity variation of the fiber laser is caused by the wavelength overlapping process into the fiber laser. The advantage of the proposed alternative is measuring AC current through the optical power from the fiber laser. The linear increment of optical output power as a function of temperature allows for the measurement of the AC current, which is an advantage over other methods.

• 出版日期2013-12