Journal article
Dynamic range enhancement of a novel phase-locked coherent optical phase demodulator
We report on a novel cancellation technique, for reducing the nonlinearity associated with the tracking phase-modulator in recently proposed phase-locked coherent demodulator for phase modulated analog optical links. The proposed cancellation technique is input RF signal power and frequency independent leading to a significant increase in dynamic range of the coherent demodulator.
Furthermore, this technique demonstrates that large values of the signal-to-intermodulation ratio of the demodulated signal can be obtained even though the tracking phase modulator is fairly nonlinear, and thereby relaxing the linearity requirements for the tracking phase modulator. A new model is developed and the calculated results are in good agreement with measurements.
Language: | English |
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Year: | 2007 |
Pages: | 33-34 |
ISSN: | 10944087 |
Types: | Journal article |
DOI: | 10.1364/OE.15.000033 |
ORCIDs: | Zibar, Darko |