H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 10/00 (2006.01) H04B 10/135 (2006.01) H04B 10/18 (2006.01)
Patent
CA 2358185
A polarization mode dispersion (PMD) compensator (10) compensates for PMD in an optical signal by an automatic tracking of a principal state of polarization (PSP). A polarization controller (PC)(22) receives a dithering optical signal including first and second principal states of polarization (PSPs) and PMD distortion received by the PMD compensator. The PC transforms the first and second PSPs into linearly polarized components, and is responsive to a feedback control signal for aligning the lenearly polarized first and second PSPs to first and second polarization axes of the PBS, respectively. A polarization beam splitter (PBS) (24) directs first polarized components of the received dithering optical signal onto a first output path, and directs second orthogonally polarized components of the received dithering optical signal onto a second output path for transmission as a PMD compensator output signal.
Un compensateur (10) de dispersion de polarisation de mode (PMD) corrige la PMD dans un signal optique en poursuivant automatiquement un état principal de polarisation (PSP). Un contrôleur de polarisation (PC)(22) reçoit un signal optique de tremblement présentant des premier et second états principaux de polarisation (PSP) et la distorsion de PMD reçus par le compensateur PMD. Le PC transforme les premier et second PSP en composants linéairement polarisés, celui-ci étant sensible à un signal d'asservissement pour aligner les premier et second PSP linéairement polarisés sur les premier et second axes de polarisation de PBS, respectivement. Un séparateur de faisceau de polarisation (PBS)(24) dirige les premiers composants polarisés du signal optique de tremblement reçu dans un premier trajet de sortie, et dirige les seconds composants orthogonalement polarisés du signal optique de tremblement reçu dans un second trajet de sortie, de façon à permettre une transmission similaire à celle d'un signal de sortie de compensateur PMD.
Qtera Corporation
Smart & Biggar
LandOfFree
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