Polarization control for coherent fiber-optic systems using nematic liquid crystals
- 1 March 1990
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Journal of Lightwave Technology
- Vol. 8 (3) , 459-465
- https://doi.org/10.1109/50.50741
Abstract
One of the obstacles to coherent fiber-optic communications is the unpredictable polarization drift which necessitates the use of an active polarization controlling system to match the polarizations of the signal and local oscillator. The polarization match must be maintained during the reset of any of the finite range components to prevent loss of data. A novel and practical system which uses three liquid-crystal devices for the polarization matching process is presented, and the required reset control algorithm and its derivation are described in detail.Keywords
This publication has 19 references indexed in Scilit:
- Automatic endless polarization control with integrated-optical Ti:LiNbO_3 polarization transformersOptics Letters, 1988
- Endless polarisation control using an integrated optic lithium niobate deviceElectronics Letters, 1988
- Endless polarisation control in coherent optical communicationsElectronics Letters, 1986
- Endlessly rotatable fractional-wave devices for single-mode-fibre opticsElectronics Letters, 1986
- Coherent Lightwave CommunicationsAT&T Technical Journal, 1985
- Polarization-state control schemes for heterodyne or homodyne optical fiber communicationsJournal of Lightwave Technology, 1985
- Electrooptic guided-wave device for general polarization transformationsIEEE Journal of Quantum Electronics, 1981
- Polarization stabilization on single-mode fiberApplied Physics Letters, 1979
- Single-mode fiber-optical polarization rotatorApplied Optics, 1979
- In-line fiber-optical polarization transformerApplied Optics, 1979