Flexible Tunable Nyquist Pulse Generation Using Recirculating Frequency Shift Loop

Xinrui Ban; Jiaxin Zhou; Jinxin Jiang; Jiakang Li; Lipei Song; Dongfang Jia; Zhaoying Wang

doi:10.1109/JPHOT.2023.3270874

IEEE Photonics Journal (Jan 2023)

Flexible Tunable Nyquist Pulse Generation Using Recirculating Frequency Shift Loop

Xinrui Ban,
Jiaxin Zhou,
Jinxin Jiang,
Jiakang Li,
Lipei Song,
Dongfang Jia,
Zhaoying Wang

Affiliations

Xinrui Ban: ORCiD; Key Laboratory of the Ministry of Education on Optoelectronic Information Technology, School of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin, China
Jiaxin Zhou: Key Laboratory of the Ministry of Education on Optoelectronic Information Technology, School of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin, China
Jinxin Jiang: Key Laboratory of the Ministry of Education on Optoelectronic Information Technology, School of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin, China
Jiakang Li: Key Laboratory of the Ministry of Education on Optoelectronic Information Technology, School of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin, China
Lipei Song: College of Modern Optics, Nankai University, Tianjin, China
Dongfang Jia: ORCiD; Key Laboratory of the Ministry of Education on Optoelectronic Information Technology, School of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin, China
Zhaoying Wang: ORCiD; Key Laboratory of the Ministry of Education on Optoelectronic Information Technology, School of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin, China

DOI: https://doi.org/10.1109/JPHOT.2023.3270874
Journal volume & issue: Vol. 15, no. 3
pp. 1 – 5

Abstract

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A novel method of optical Nyquist pulse generation based on recirculating frequency shift loop (RFSL) is proposed and experimentally demonstrated. In this article, a large number of flat phase-locked comb lines output from RFSL are used to synthesize Nyquist pulse, which has ultra-narrow and flexible tunable pulse width. It is the first time to theoretically analyze the condition of Nyquist pulse generation by RFSL in detail. In the experiment, the number of flat spectral lines is continuously tuned in the range of 10 to 40 corresponding to the pulse width of 8.9 ps to 2.4 ps. Meanwhile, Nyquist pulses with tunable repetition rate from 7.5 GHz to 15 GHz are obtained experimentally.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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