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Photonic frequency sextupling scheme based on two intensity modulators and a S agnac loop
Author(s) -
Zheng Hanxiao,
Wen Aijun,
Gao Yongsheng,
Zhang Wu,
Chen Wei,
Xiang Shuiying,
He Hongye
Publication year - 2017
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.30414
Subject(s) - physics , sagnac effect , optics , local oscillator , signal (programming language) , loop (graph theory) , microwave , spurious relationship , phase noise , transmission (telecommunications) , interferometry , telecommunications , engineering , computer science , mathematics , combinatorics , quantum mechanics , machine learning , programming language
A photonic scheme to generate frequency sextupled microwave signal is proposed and experimentally demonstrated. An intensity modulator (IM) and a Sagnac loop with another IM imbedded inside are cascaded in the scheme. A light wave is modulated by a local oscillator (LO) signal in the first IM at the minimum transmission point to generate the ±1st‐order sidebands, and the modulated light wave is then sent to the Sagnac loop. The IM in the Sagnac loop is operating at the maximum transmission point and is driven by the same LO signal. The optical signal at the output of the Sagnac loop mainly contains ±3rd‐order sidebands. In the experiment, a 15.1‐dB electrical spurious suppression ratio (ESSR) is observed and no extra phase noise is introduced. In addition, the proposed system has no optical or electrical filter so that the generated frequency of the system can be tuned flexibly. © 2017 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:853–857, 2017