4.5 Article

Noise figure reduction in externally modulated analog fiber-optic links

Journal

IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 19, Issue 5-8, Pages 312-314

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2007.891591

Keywords

analog systems; electrooptic modulation; modulation; noise; optical fiber communication; optoelectronic devices

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An octave-bandwidth microwave photonic link with a third-order limited spurious-free dynamic range of 121 dB in a 1-Hz bandwidth has been demonstrated. The link noise figure of 9 dB at a modulation frequency of 2 GHz was achieved by using a bias-shifted Mach-Zehnder modulator with an optical input power of 500 mW. This level of performance was realized without electronic or optical linearization.

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