Optical fiber winding for measuring the current circulating through a conductor, and optical fiber-based current measuring equipment

An optical fiber-based current measuring assembly for measuring the current circulating through a conductor, the assembly comprising:

• an interrogator including a light emitter and a light receiver;
• a sensing portion close to the conductor;
• and
• an optical fiber transmission means arranged between the interrogator and the sensing portion,
• the sensing portion including an optical fiber winding comprising:
• a first helically wound standard single-mode optical fiber cable having a length and a first central axis, the first helically wounds standard single-mode fiber cable being twisted about the first central axis in a first twist direction;
• and
• a second helically wound standard single-mode optical fiber cable having a length and a second central axis, the second helically wound standard single-mode optical fiber cable being twisted about the second central axis in a second twist direction, the second twist direction being opposite the first twist direction,
• each of the first and second helically wound standard single-mode optical fiber cables making contact with one another at multiple locations along their length, due to the first and second helically wound standard single-mode optical fiber cables making contact with one another and being twisted in opposite directions, counteracting forces exist where the first and second helically wound standard single-mode optical fiber cables contact one another to resist an untwisting of the first and second helically wound standard single-mode optical fiber cables.