Research on octupling frequency triangular-shaped waveform generator with flexible repetition rate tunability

Chenruo Hu; Jin Yuan; Qisong Liu

doi:10.1117/12.3037487

27 November 2024 Research on octupling frequency triangular-shaped waveform generator with flexible repetition rate tunability

Chenruo Hu, Jin Yuan, Qisong Liu

Author Affiliations +

Proceedings Volume 13236, Optoelectronic Devices and Integration XIII; 1323616 (2024) https://doi.org/10.1117/12.3037487
Event: SPIE/COS Photonics Asia, 2024, Nantong, Jiangsu, China

Conference Poster

Abstract

In this manuscript, a novel scheme for generating a frequency-octupled triangular waveform based on an external modulator and fiber grating is proposed. The octuple frequency modulation is realized by dual-parallel Mach-Zehnder modulator (DP-MZM), and two main optical sidebands (±4th) are generated in the optical domain. Then, an intensity modulator (IM) is used to conduct the optical double sideband (ODSB) modulation, after which an optical signal with four sidebands (±4th and ±12th) is obtained. The four spectral lines are separated inside and outside by an optical circulator and fiber grating. After polarization controlling, the power ratio of ±4 and ±12 sidebands can be tuned to 9.5dB, and the expression of optical intensity is approximately equal to the Fourier expansion of the ideal triangular waveform. By applying a 5GHz driving frequency, a triangular waveform with a repetition rate of 40GHz is acquired, which achieves up conversion of octuple frequency.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Chenruo Hu, Jin Yuan, and Qisong Liu "Research on octupling frequency triangular-shaped waveform generator with flexible repetition rate tunability", Proc. SPIE 13236, Optoelectronic Devices and Integration XIII, 1323616 (27 November 2024); https://doi.org/10.1117/12.3037487

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