Open AccessOne‐third optical frequency divider for dual‐wavelength optical signals based on an optoelectronic oscillator
Author(s) -
Liu Hongfei,
Zhu Nan,
Liu Shifeng,
Zhu Dan,
Pan Shilong
Publication year - 2020
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2019.4251
Subject(s) - phase noise , optics , signal (programming language) , dbc , wavelength , optoelectronics , radio frequency , physics , phase (matter) , materials science , electrical engineering , engineering , computer science , quantum mechanics , programming language
An optical frequency divider for dual‐wavelength optical signals based on an optoelectronic oscillator (OEO) is proposed and experimentally demonstrated. The Mach–Zehnder modulator in the OEO is biased at the minimum transmission point, the OEO‐based frequency divided signal originates from system noise. When the oscillation phase and amplitude conditions met, it gets stabilised at an oscillation frequency which is one‐third of the frequency interval of the injected dual‐wavelength optical signal. A proof‐of‐concept experiment is verified. With the frequency interval of the dual‐wavelength optical signal ranging from 101.4 to 120.6 GHz, the RF signals ranging from 33.8 to 40.2 GHz are successfully generated. The power ripple is lower than 2.92 dB and the rejection ratio of the harmonic components is larger than 39 dB for all the conditions. The phase noise values of the generated RF signals are kept to be around −105 dBc/Hz@10 kHz.