25 March 2008 Optical frequency comb generation by direct modulation of CW light
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Abstract
We are investigating optical frequency comb generation by direct modulation of CW light. Our scheme is based on three cascaded modulators; one amplitude modulator and two phase modulators. The modulation scheme is optimized for flatness and power efficiency. A stable optical spectrum has been generated with ~100 comb lines with 0.625 GHz spacing and 3 dB flatness. We also investigate comb generation via phase only modulation.
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S. Ozharar, I. Ozdur, F. Quinlan, P. J. Delfyett, "Optical frequency comb generation by direct modulation of CW light", Proc. SPIE 6975, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications IV, 69750J (25 March 2008); doi: 10.1117/12.783442; https://doi.org/10.1117/12.783442
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KEYWORDS
Frequency combs

Modulation

Modulators

Phase shift keying

Phase modulation

Amplitude modulation

Continuous wave operation

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