Demonstration of all-optical phase noise suppression scheme using optical nonlinearity and conversion/dispersion delay.
نویسندگان
چکیده
We propose and demonstrate an all-optical phase noise reduction scheme that uses optical nonlinear mixing and tunable optical delays to suppress the low-speed phase noise induced by laser linewidth. By utilizing the phase conjugate copy of the original signal and two narrow-linewidth optical pumps, the phase noise induced by laser linewidth can be reduced by a factor of ∼5 for a laser with 500-MHz phase noise bandwidth. The error-vector-magnitude can be improved from ∼30% to ∼14% for the same laser linewidth for 40-Gbit/s quadrature phase shift keying signal.
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عنوان ژورنال:
- Optics letters
دوره 39 10 شماره
صفحات -
تاریخ انتشار 2014