Title :
Electrooptic polarization scramblers for optically amplified long-haul transmission systems
Author :
Heismann, F. ; Gray, D.A. ; Lee, B.H. ; Smith, R.W.
Author_Institution :
AT&T Bell Labs., Holmdel, NJ, USA
Abstract :
To combat polarization hole burning in erbium-doped fiber amplifiers, we modulate the input polarization state to a 8800-km long 5.33-Gb/s NRZ transmission system at rates between 10 kHz and 10 GHz using integrated-optic polarization scramblers in lithium niobate. At modulation frequencies of 40 kHz and 10.66 GHz, we observe improvements in the signal-to-noise ratio of the received electrical signal of 4 and 5 dB, respectively.<>
Keywords :
electro-optical devices; fibre lasers; integrated optics; light polarisation; lithium compounds; optical communication equipment; optical fibres; optical hole burning; optical modulation; 10 kHz to 10 GHz; 10.66 GHz; 40 kHz; 5.33 Gbit/s; 8800 km; LiNbO/sub 3/; NRZ transmission system; electrooptic polarization scramblers; erbium-doped fiber amplifiers; input polarization state modulation; integrated-optic polarization scramblers; lithium niobate; modulation frequencies; optically amplified long-haul transmission systems; polarization hole burning; received electrical signal; signal-to-noise ratio; Erbium-doped fiber amplifier; Geometrical optics; Optical fiber polarization; Optical modulation; Optical noise; Optical polarization; Optical saturation; Optical transmitters; Signal to noise ratio; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
