Abstract

In this study, we experimentally demonstrate what we believe is a novel dual-loop optoelectronic oscillator (OEO) with a self-phase locking loop (SPLL). Using this feedback loop, the phase of the oscillating signal is locked to its past by adjusting the DC bias voltage of the used Mach–Zehnder modulator. In this way, the oscillating frequency stability can be improved. Proving experiments on a 10-GHz OEO are performed. The results show that more than 20 dB improvements in the phase noise at low offset frequencies are achieved, the frequency fluctuation is reduced to less than 4 kHz in an hour, and the corresponding Allan deviation is decreased by 1 order of magnitude owing to the SPLL. This frequency stabilization scheme without use of any external reference sources has a great prospect in an integrated OEO.

© 2022 Optica Publishing Group

Novel dual-loop optoelectronic oscillator based on self-polarization-stabilization technique

Linbojie Huang, Quan Yu, Lei Deng, Songnian Fu, Ming Tang, Mengfan Cheng, Minming Zhang, Michael Choi, Donald Chang, Gordon K. P. Lei, and Deming Liu
Opt. Express 25(18) 21993-22003 (2017)

Highly improved side mode suppression ratio and a low phase noise optoelectronic oscillator

Yalan Wang, Chengji Lin, Xiang Li, Jin Zhang, Anle Wang, Depei Zhang, Shirui Du, and Xiaoniu Peng
Appl. Opt. 61(15) 4602-4609 (2022)

Spurious level and phase noise improved Fourier domain mode-locked optoelectronic oscillator based on a self-injection-locking technique

Yalan Wang, Xiang Li, Jin Zhang, and Jianghai Wo
Opt. Express 29(5) 7535-7543 (2021)

High-gain narrowband radio frequency signal amplifier based on a dual-loop optoelectronic oscillator

Xiaoyi Wang, Ruihuan Wu, Bo Li, Ziyang Wang, Yue Liu, Jia Yuan, Jianping Guo, and Hongzhan Liu
Opt. Express 30(9) 13994-14001 (2022)

Optoelectronic oscillator stabilized to an intra-loop Fabry-Perot cavity by a dual servo system

Jang Myun Kim and D. Cho
Opt. Express 18(14) 14905-14912 (2010)