Beat Length Measurement in Birefringence Optical Fibers
Beat Length Measurement in Birefringence Optical Fibers is a scholarly work, published in 2018 in ''Photonics Russia''. The main subjects of the publication include fiber-optic sensor, optics, optical interconnect, optical fiber, silicon photonics, birefringence, materials science, and beat. Birefringence optical fibers (OF) appeared in 197819791980198119821983 together with the technologies of thermoelastic inserts in the workpieces for drawing optical fibers.This article deals with two basic methods of measurement of embedded BOFs: spectral method and elastic twisting method.Three OFs types, drawn from the workpieces with embedded linear birefringence are taken as objects of study: HiBi or also PM-(polarization maintaining) fibers; fibers, drawn from the same workpieces, but with the rotation of the workpiece -spun-fiber; LoBi-fibers, which by the method are referred to as spun-fibers.The technique of measuring the beat length of the embedded BOFs is described in detail.