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Optical frequency comb generation via an intensity modulator in a Sagnac loop
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Publication in Journal of Optical Technology
L. Shang, L. Ma, Sh. Tian Optical frequency comb generation via an intensity modulator in a Sagnac loop (Генерация оптических гребенок с использованием модулятора интенсивности в петле Саньяка) [на англ. яз.] // Оптический журнал. 2017. Т. 84. № 1. С. 9–13.
L. Shang, L. Ma, Sh. Tian Optical frequency comb generation via an intensity modulator in a Sagnac loop (Генерация оптических гребенок с использованием модулятора интенсивности в петле Саньяка) [in English] // Opticheskii Zhurnal. 2017. V. 84. № 1. P. 9–13.
L. Shang, L. Ma, and Sh. Tian, "Optical frequency comb generation via an intensity modulator in a Sagnac loop," Journal of Optical Technology. 84(1), 5-8 (2017). https://doi.org/10.1364/JOT.84.000005
We propose a simple optical frequency comb generator with Nyquist temporal waveform by using of an intensity modulator in a Sagnac loop. By properly adjusting the polarization of the output from the Sagnac loop, a quasi-rectangular-shaped 5-tone optical frequency comb with Nyquist temporal waveform is theoretically and experimentally demonstrated. But it is impossible to generate Nyquist pulses with more than 3 comb lines using a single intensity modulator as reported before. In our scheme, only one radio-frequency signal with a relatively low power and only one direct-current voltage is needed, which effectively increases the system reliability and decrease the system complexity and cost.
optical frequency comb, intensity modulator, Sagnac loop, Nyquist pulses
Acknowledgements:This work was supported by 111 project (under granted: B08038), the Fundamental Research Funds for the Central Universities (JY10000901005) and the Project Supported by Natural Science Basic Research Plan in Shaanxi Province of China (Program No. 2016JM6009).
OCIS codes: 060.2330, 060.5625, 190.4160
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