Intermodulation Distortion of a Comb-Based RF Photonic Filter Using Balanced Detection

We investigate intermodulation distortion of a tunable radio frequency photonic filter utilizing an optical frequency comb, an interferometric configuration, and a balanced detection. When the filter passband is tuned from 2 to 7 GHz, this scheme has the third-order spurious free dynamic range of &l...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 27; no. 23; pp. 2477 - 2480
Main Authors Hyoung-Jun Kim, Weiner, Andrew M.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.12.2015
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
balanced detection
Frequency comb
intermodulation distortion
Microwave filters
microwave photonics
Optical distortion
Optical fiber filters
Optical interferometry
Photonics
Radio frequency
spurious free dynamic range
tunable filters
Frequency comb
tunable filters
balanced detection
microwave photonics
spurious free dynamic range
intermodulation distortion
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Summary:We investigate intermodulation distortion of a tunable radio frequency photonic filter utilizing an optical frequency comb, an interferometric configuration, and a balanced detection. When the filter passband is tuned from 2 to 7 GHz, this scheme has the third-order spurious free dynamic range of <;108.2 dB·Hz2/3. In addition, we investigate the effect of Mach-Zehnder modulator (MZM) configuration on second-order intermodulation. A high extinction ratio MZM results in 43-dB lower power in the second-order intermodulation tones compared with that obtained with a conventional MZM.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2015.2470667