Abstract

Efficient phase to intensity conversion is key in Sagnac-loop based opto-electronic oscillators (OEO). This paper features analytical modeling of phase to intensity conversion in practical Sagnac-loop interferometers, with practical coupling imbalance in 3-dB optical coupler, polarization imbalance of the non-reciprocal optical phase shifter (NRPS), and cross-talk ratio in polarization maintaining fiber (PMF). Single-sideband (SSB) phase noise of self-forced frequency stabilization technique of this OEO is also modelled using self-injection locked (SIL) and dual self-phase locked loop (DSPLL); the free-running and forced modeling results of Sagnac-loop based OEO matches with experimentally measured phase noise results. The measured phase noise of the SILDPLL based OEO at 10 GHz is −131 dBc/Hz at offset frequency of 10 kHz with approximately 11 dB phase noise reduction compared to the results of free-running OEO. Self-forced stabilization of OEO results in timing jitter of 19.5 fs, a factor of 6 times reduction in the free-running performance.

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)

Stability improvement of a dual-loop optoelectronic oscillator based on self-phase locking

Yifan Wang and Juanjuan Yan
Appl. Opt. 61(30) 8912-8916 (2022)

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)

Dual-loop diode-tuned Fourier domain harmonically mode-locked opto-electronic oscillator with over 50 dB side-mode spur reduction

Peng Hao, Jiaqi Niu, Xichen Wang, and X. Steve Yao
Opt. Express 30(25) 45569-45582 (2022)

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)