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5 August 2015 Stable coherent dual comb generator with dual-heterodyne phase error transfer and heterodyne optical phase-locked loop
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Abstract
We demonstrate a stable coherent dual comb generator with two phase/intensity-modulated combs. The optical fiber path induced phase fluctuation results in the coherent dual comb beating phase noise. We transfer this phase noise to a 40MHz intermediate frequency with dual-heterodyne phase error transfer, decreasing by a phase-locked loop and optical phase locked loop. Under the scheme, stable coherent dual comb with slightly different repetition rates and offset frequency is generated.
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Yitian Tong, Zhangweiyi Liu, Baiyu Li, Qian Zhou, Yi Dong, and Weisheng Hu "Stable coherent dual comb generator with dual-heterodyne phase error transfer and heterodyne optical phase-locked loop", Proc. SPIE 9619, 2015 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing, 96190C (5 August 2015); https://doi.org/10.1117/12.2195291
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