Abstract

We experimentally demonstrate a wideband-frequency tunable optoelectronic oscillator (OEO) based on injection locking of the OEO to a tunable electronic oscillator. The OEO cavity does not contain a narrowband filter and its frequency can be tuned over a broad bandwidth of 1 GHz. The injection locking is based on minimizing the injected power by adjusting the frequency of one of the OEO cavity modes to be approximately equal to the frequency of the injected signal. The phase noise that is obtained in the injection-locked OEO is similar to that obtained in a long-cavity self-sustained OEO. Although the cavity length of the OEO was long, the spurious modes were suppressed due to the injection locking without the need to use a narrowband filter. The spurious level was significantly below that obtained in a self-sustained OEO after inserting a narrowband electronic filter with a $Q$-factor of 720 into the cavity.

© 2016 Optical Society of America

Wideband tunable opto-electronic oscillator based on frequency translation

Zeev Tamir, Asher Meltzer, and Moshe Horowitz
Opt. Lett. 42(14) 2671-2674 (2017)

Tunable low-drift spurious-free optoelectronic oscillator based on injection locking and time delay compensation

Zhiqiang Fan, Qi Qiu, Jun Su, and Tianhang Zhang
Opt. Lett. 44(3) 534-537 (2019)

Wideband tunable optoelectronic oscillator based on a microwave photonic filter with an ultra-narrow passband

Haitao Tang, Yuan Yu, Ziwei Wang, Lu Xu, and Xinliang Zhang
Opt. Lett. 43(10) 2328-2331 (2018)

Frequency-tunable optoelectronic oscillator using a dual-mode amplified feedback laser as an electrically controlled active microwave photonic filter

Dan Lu, Biwei Pan, Haibo Chen, and Lingjuan Zhao
Opt. Lett. 40(18) 4340-4343 (2015)

Microwave photonic injection locking frequency divider based on a tunable optoelectronic oscillator

Yao Meng, TengFei Hao, Wei Li, NingHua Zhu, and Ming Li
Opt. Express 29(2) 684-691 (2021)