Fabrication of single-mode fibres exhibiting extremely low polarisation birefringence

Beat Length Measurement in Birefringence Optical Fibers

“…НiBi-волокна иначе называют PM (polarization maintaining) волокнами, то есть волокнами, сохраняющими поляризацию. Несколько отдельно стоят так называемые LoBiволокна [8][9][10], которые по способу изготовления (вращение заготовки) относят к spun-волокнам. Как нам кажется, эти волокна заслуживают отдельного рассмотрения, так как принципиально в этих волокнах было все сделано для ликвидации исходного встроенного линейного ДЛП [8].…”

“…The so called LoBi-fibers [8][9][10] stand somewhat separately which by the manufacturing method (workpiece rotation) are referred to as spun-fibers. We believe, these fibers deserve a thorough consideration, since all possible for liquidation of the original embedded linear birefringence was done principally in these fibers [8]. Birefringence optical fibers appeared in 1978-1983 together with the technologies of thermoelastic inserts into the workpieces for drawing optical fibers.…”

“…Spun-fibers are obtained by drawing with rotation of the workpiece for any HiBi-fiber [11][12][13]. Finally, drawing with rotation of the workpiece without any artificial birefringence and measures are taken to obtain a round core and its position exactly in the fiber center gives a LoBi-fiber [8][9][10].…”

Introduction to polarization mode dispersion in optical systems

“…Early advances in fiber manufacturing techniques [2,12,13,61,79] initially led to lower intrinsic fiber birefringence. As further reduction in the intrinsic fiber birefringence became increasingly difficult, attention shifted to mitigating it.…”

Depolarization of light due to the optical Kerr effect in low-birefringence single-mode fibers

“…(2) can be recast in a simpler form by introducing the circularly polarized states E(r)g+ (clockwise) and E(r)&-(counterclockwise), with (12) with where the operation. yield (5) J Jxx Jxy (l 1 2 ) (0140*2)…”