Differential Polarization Delay in Coupled-Resonator Optical Waveguides
- 18 August 2009
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 21 (20) , 1541-1543
- https://doi.org/10.1109/lpt.2009.2028897
Abstract
An integrated device capable of dynamically controlling the differential delay between two orthogonally polarized data channels is presented. The polarization-selective delay is induced by exploiting waveguide birefringence in a ring-resonator coupled resonator optical waveguide. A prototype realized in silicon-oxynitride technology is employed to manage the differential delay between two polarization-division-multiplexed channels modulated up to 10 Gb/s over several bit-slots. Reconfiguration is achieved by thermo-optic effect with 1-ps delay accuracy. Back-to-back and propagated bit-error-rate measurements show minor deterioration of the signal with negligible polarization crosstalk.Keywords
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