Narrow-Linewidth Microwave Generation by Optoelectronic Oscillators With AlGaInAs/InP Microcavity Lasers
| Autor: | Jun-Yuan Han, Yue-De Yang, Yong-Zhen Huang, Hai-Zhong Weng, Jin-Long Xiao, Ming-Long Liao |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
business.industry Physics::Optics 02 engineering and technology Laser Signal Atomic and Molecular Physics and Optics Semiconductor laser theory law.invention Laser linewidth 020210 optoelectronics & photonics law Harmonics Phase noise 0202 electrical engineering electronic engineering information engineering Optoelectronics Photonics business Microwave |
| Zdroj: | Journal of Lightwave Technology. 36:4379-4385 |
| ISSN: | 1558-2213 0733-8724 |
| Popis: | The optoelectronic oscillators (OEOs) based on a 1.55-μm direct-modulated AlGaInAs/InP square microcavity laser without optical injection are demonstrated for narrow-linewidth photonic microwave signal generation. The square microcavity laser with a side length of 16 μm under an injection current of 14 mA is used in the experiment. High-quality photonic microwave signals with 3-dB linewidths around 30 Hz are obtained by the first harmonics of the single-loop and dual-loop OEOs. Single-sideband phase noise at 10 kHz frequency offset is as low as −116 dBc/Hz for the microwave signal. With the dual-loop OEO, the side-mode suppression ratios up to 55 dB are obtained for the first harmonics, and tunable microwave signals from 1.85 to 10.24 GHz are realized with narrow linewidths and low-phase noises. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|