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Optical and Quantum Electronics

Flat optical frequency comb generation using polarization modulator and frequency shifter with double recirculating frequency shifting loops

  • 01-10-2017
Published in:
Authors
Yaling Cui
Ruxing Li
Shibao Wu
Published in
Optical and Quantum Electronics | Issue 10/2017

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Abstract

A scheme to generate ultra-flat and stable optical frequency comb (OFC) based on multi-wavelength optical seed source and polarization-modulator-based complementary frequency shifter (PCFS) has been proposed and demonstrated. The OFC generation scheme includes two stages: 5-carrier light source is generated by utilizing a polarization modulator at the first stage, and the light source is then used as the seed light in the PCFS at the second stage. Compared with the previous flat OFC generator based on a recirculation frequency shifter, the proposed scheme can greatly reduce the recirculation times, and such a property makes the accumulated noise of the system enormously decrease. In order to achieve the frequency comb with the best flatness, the optical amplifier gain, filter stop-band attenuation and modulator drive voltage are optimized. Experiment simulations show that high-quality OFC with hundreds of frequency lines and power fluctuation within 2 dB can be achieved without direct-current bias control and wavelength-selective-switch.

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Title
Flat optical frequency comb generation using polarization modulator and frequency shifter with double recirculating frequency shifting loops
Authors
Yaling Cui
Ruxing Li
Shibao Wu
Publication date
01-10-2017
Publisher
Springer US
Published in
Optical and Quantum Electronics / Issue 10/2017
Print ISSN: 0306-8919
Electronic ISSN: 1572-817X
DOI
https://doi.org/10.1007/s11082-017-1179-0
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