Title :
Experimental demonstration of an all-fiber endless polarization controller based on Faraday rotation
Author :
Prat, J. ; Comellas, J. ; Junyent, G.
Author_Institution :
Dept. de Teoria del Senyal i Comunicacions, Univ. Politecnica de Catalunya, Barcelona, Spain
Abstract :
An all-fiber device for the control of the state of polarization (SOP) is presented. The controller is high speed (its time response is less than 50 ms in the worst case), low loss (insertion losses are 2.5 dB independently of the input SOP), and low cost (is constructed with standard single-mode fiber). The polarization controller has been implemented using two Faraday rotators and works at 1550 nm. We have also designed an algorithm that confers an endless performance to the device. The controller has been included in a 2.5 Gb/s CPFSK optical coherent system and results are presented here.
Keywords :
Faraday effect; frequency shift keying; magneto-optical devices; optical fibre communication; optical fibre losses; optical fibre polarisation; optical fibres; optical polarisers; 1550 nm; 2.5 Gbit/s; 2.5 dB; 50 ms; CPFSK optical coherent system; Faraday rotation; Faraday rotators; algorithm; all-fiber device; all-fiber endless polarization controller; high speed; insertion losses; low loss; standard single-mode fiber; state of polarization control; time response; Azimuth; Birefringence; Frequency; Optical amplifiers; Optical fiber polarization; Optical fiber testing; Optical fibers; Optical mixing; Optical receivers; Power amplifiers;
Journal_Title :
Photonics Technology Letters, IEEE
